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Message started by still on 08/18/05 at 11:03:11

Title: Backfiring Engine!!!!!!!!!!!!
Post by still on 08/18/05 at 11:03:11

 I have recently purchased a 1986 Savage that is completely stock! This is my first time with/on a bike! The bike has less than 3,500 miles. Purchased from a very good friend who bought it from the original owner. My friend has told me everything I know about the bike and well before I thought about buying it from him, he complained about the tremendously LOUD :o  backfire everytime he turned off the engine. I am not mechanically enclined at all! My friend was told from other gear heads that this is something that this single cylinder engine had a tendancy to do. Is this true? If not, what do I need to do to have it fixed and keep the neighborhood from thinking they are being bombed!!!!!!
P.S. Thanks for the great site!

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 08/18/05 at 11:13:30

Welcome to the world of Savage owners.  You have to leave beer and peanuts out for the elves to come and fix it.  If that doesn't work, try doing a search on this site and be sure to set the way-back setting to something more than the default of 7 days... try 500 and the number of hits to something higher too because this topic has been discussed a lot.  If you still have questions after reading all of this stuff, please repost.

Rob

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Richard Amirault on 08/18/05 at 11:46:18

Welcome ... when I started riding my 04 I had the same problem ... but I was shutting down by hitting the "kill switch" on the right handlebar.

I stopped doing that and and now shut 'er down with the ignition switch and it hasn't done it since.  

The bike *will* backfire when you let off the throttle going down the road. It's the nature of the beast we ride.

Richard in Boston, MA, USA

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mornhm on 08/18/05 at 12:43:53

Repeat what Savage_Rob says, also you might want to read about the differences between your bike and "younger" bikes. There are some differences, and around this forum a lot of them have been pointed out.

Some suggested search topics might be settings, tuning, carb, and modifications.

This should give you more than an evenings reading. :P

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Reelthing on 08/18/05 at 13:18:35


Richard Amirault wrote:

The bike *will* backfire when you let off the throttle going down the road. It's the nature of the beast we ride.

Richard in Boston, MA, USA


Richard it doesn't have to be that way.


Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by DavidV on 08/18/05 at 13:24:25

An afternoon's work will stop the backfiring.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by RadarORiley on 08/18/05 at 14:35:15

Actually, I have learned to like the backfire, keeps me company on back roads.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by lancer on 08/18/05 at 17:05:49

Backfiring is ABNORMAL for an engine, and can damage it severly in some extreme cases.  An engine with a properly  tuned intake/exhaust will not backfire.
Do your homework, learn about properly setting up the intake and exhaust and tuning the carb.  The result will be a happy engine.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Reelthing on 08/18/05 at 17:10:43

and man do they run better

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 08/18/05 at 18:40:09

I haven't fine-tuned mine with the changes I've made but it doesn't backfire often... though I can usually force it to by really goosing it hard and dropping it off quickly.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by iKrayg on 08/18/05 at 19:45:40

Hey,
Welcome to the club!

Just curious, if you do try to fix it and drill out your air mixture screw plug, would you please tell us how many turns out the factory had your mixture screw is set to (by counting how many turns in it takes until the needle seats)?  Also which state you live in?

Thanks,
Craig

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by still on 08/18/05 at 22:57:31

First, a BIG Thank You to everyone who has posted something in regards to my question ;D ! Allow me to secondly reinstate...... I AM NOT MECHANICALLY INCLINDED WITH ANYTHING HAVING TO WITH ENGINES/MOTORS/THINGS UNDER HOODS! Basically anything much over hammering a nail....I AM CLUESS! I do know enough to pay someone who knows these things to handle it! I just would like to know some terms maybe to tell the mechanic so I don't get SCREWED or maybe my friend who I bought it from can look at this and work on it for a nominal fee! Also if it is above his head I live in Hollywood, California......if anyone knows a good shop/mechanic! Thanks Again!!!!!!

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by dannimal on 08/18/05 at 23:01:42

Beer & nuts for the Elves! I like that one ;D

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Munson_kl279 on 08/19/05 at 05:13:56


Savage_Rob wrote:
You have to leave beer and peanuts out for the elves to come and fix it.


You know, I tried that once when I couldn't get my new turn signals to work...it didn't work...but this site helped a lot!

~Munson

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by weasle1000 on 08/19/05 at 20:48:14

Well I am also a new owner of a 05 s40.  I bought the bike due to the need for a more affordable way to commute to work each day.  The guys that are on this message board I think are real helpfull since I was wondering about the backfireing and how to fix it and all that information was here .  Since I am form of a mechanic I figured as long as I can find the information I could do the work.  The s40 was the perfect bike for what I was looking for I think it is a great starter bike plus it isn't hard to work on.  Thanks to everyone on this board for all the information available.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by methom on 08/20/05 at 04:21:49

I second the suggestion of reading the older threads on the topic, but I understand you're not really into wrenching on things.  Here is a real simple thing to try.  My '00 was backfiring, too, when I shut it off...not too loud, but annoying.  This started after the dealership did a tune up, and I noticed that it seemed to be idling fast.  There is a screw (usually brass colored) on the left side of the motor that you can turn with your hand.  If your bike is idling fast, you might loosen that a turn or so to see if it slows the idle down and maybe helps with the backfiring.  If the bike stalls at idle, you've backed it off too much.  Sounds like it needs a tune up, but you could try this.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by GaThumper on 08/20/05 at 06:57:56

If you don't want to work on your bike right now, try pulling the choke out a little, then shut it off, & then push the choke back in after the bike is off.  The Savage is a cool bike that anyone with a little desire, patience, and attention to detail can work on easily and get good results.

If you'll do a search for "mixture screw" or "brass plug" you'll find what you need to know about correcting the mixture, which will probably solve your problem.  It just takes a couple of minutes.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by torque on 08/20/05 at 07:30:11

adjusting the carb does NOT void the warranty, you must do this to any carburated bike ,my family has had harleys as long as i can remember they all backfire its what bikes do ,my dad was against me getting the savage but when i brought home and knocked the the baffles out my whole family was jealous that i had a great sounding bike for have the cash,true if u get a more expensive bike it wont do it as much or have more sophisticated exhaust but be ready to fork out  over $15.000 easily,hense the term u get what u pay for ,now darn ive wasted my energy again

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by gazab44 on 08/21/05 at 05:09:46

WELCOME

STILL SAVAGE..are you still with us  :)

My 96 is back as stock, except for white spacer mod, at the moment and it hardly ever backfires now..when it does it only a little fart anyway....

Just spend some time reading previous threads and you will realise that you don't need hardly any mech. experience to do some of the basic mods because they are explained so well...

I love this forum and the people on it ( even though most are yanks and speak a forign language LOL..or is it me the limey who speaks the forign language? )

I also need this forum because most of the dealers in "good ol' blitey" have never even seen a savage.

SO....join in,  you'll have fun, (and some heartache) learning.  :)

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by gazab44 on 08/21/05 at 06:08:06

Also...if I ever get rid of my savage...I'd make out i'd still got it just to stay in this forum :)

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Munson_kl279 on 08/21/05 at 10:41:36

How many people do you actually know that buys a new bike and leaves it completely stock?  I don't know anyone.  It's the nature of the beast and the hobby.

Even people that buy Harleys right off the showroom floor are bound with in the first year to make a bunch of mods.  Simple things as adding some chrome goodies to the muffler to changing the carb.  Somethings are done just for looks and others, like what the original poster was asking about, are to increase performance.

just my 2 cents

~Munson

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Paladin on 08/21/05 at 10:55:34


Ed_L. wrote:
Lancer has a good point as usual,
Yeah, older and wiser heads and all that rot.  It's ok -- in a few more decades he'll become even older and grow crotchety.


Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Paladin on 08/21/05 at 11:00:16


Munson_kl279 wrote:
How many people do you actually know that buys a new bike and leaves it completely stock?  I don't know anyone.  It's the nature of the beast and the hobby....

That is actually true about most anything.  You buy a bike, change the muffler (they never sound right when you get them!) repaint, change logos, add dinglebells, decals, trolls, whatever.  You personalize it.  Same with cars.  Same with houses.  People even try customizing spouses once they obtain one.  (That usually doesn't work.)

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/21/05 at 13:05:58

...I want to restate my question and add a couple more.....

All I wanted to know was how to minimize such a LOUD backfire when I turn off the engine! Backifirng during riding DOES NOT bother me.....just when shutting off the engine I don't want to cause any damage to ANYTHING!

I would also like to know what is the BEST sparkplug to put in as a replacement and more importantly.......

What suggestions do you gearheads have about cleaning the carborator.....sprays? replacemet? fine-tuning? so-on!

Thanks again to those of you who have given good suggestions to this point! Also remeber....I am not mechanically inclined in the slightest.....please if at all possible, speak in mechanics language for beginers!

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by lancer on 08/21/05 at 13:34:25

Backfiring is caused primarily by excess lean conditions.
 
It can be caused by something simple like loose bolts/connections on the carb/filter or on the header pipe/muffler.  Check those connections and gaskets  to be sure that they are tight so air does not get into the system.

After those are determined to be in good shape, then the carb needs to be looked at.  It is the pilot circuit in the carb that causes most, if not all, of the backfiring.

The bike is shipped from the factory with the carb tuned VERY LEAN so it will pass the exhaust emmisions requirements of the government.  Good for the air...not good for the running of the engine.  The pilot circuit needs to be adjusted for proper fuel/air mixture for OPTIMUM running....it needs to be made more rich.  The pilot adjusting screw on the carb has to be turned out (counterclockwise) in order to richen the mixture.  The pilot system is primarily for low speed running but is also a small  factor for midrange and high speed running.  

If you have replaced the stock muffler with an aftermarket muffler then you will likely need to replace the pilot jet with one size larger jet...doing the same with the main jet may also be advantageous.  

You can do all of this in a couple of easy hours.



Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/21/05 at 14:07:42

Lancer,

    Thanks for the info......my bike is a 1986 that is completely stock except the new battery.....I just re-read my original post and noticed a slip up when I was typing.

    The bike doe NOT have less than 3,500 miles.......
meant to type "less than 13,500 miles".

    Since this bike is coming up on 20yrs.....What should I considor doing for a major tune up (everything seems like the logical answer to me)? I got the bike for a steal of a deal....$800 including full-face helment and minor mechanic work/help from the friend I bought it from!

    Also, the bike sat for about 2yrs before it was cranked up one week ago! Started right up on first try, then obviously got into some bad gas (maybe carb is gummed up too) and since has had trouble staying running after we get it going! We sprayed high octane spray right on the fuel injector to get it going, put in premium 91 octane fuel and feel as though all of the "bad" gas should be out by now! Runs for a minute tops snd upon really reving it up shuts down as the rpm's come down......

    Anything else we should do......anxious to ride!!!!!!! ;D

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Ed_L. on 08/21/05 at 14:15:21

StillSavage, looks like you kicked over a can of worms, don't worry, beside the carb mods, white spacer and main rejet, add a ounce or so of two stroke oil to the tank every fill up. It keeps the slide from sticking in the carb.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/21/05 at 14:45:36

Ed_L,

We'll do....Thanks!

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/21/05 at 15:56:38

Any good tips to minor rust removal on the crome?

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by torque on 08/21/05 at 16:14:00

i found blue magic to work great i use it on every piece of chrome on the bike it maks it so shiney,also i have 20 inch forged aluminium wheels on my truck and it works just as good on them.i highly recomend it . you can get it at any auto zone,or advance auto.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/21/05 at 16:36:46

Torque,

I will try it out......do you use a cloth?

Is it necessary to use a wirebrush on some spots?

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by torque on 08/21/05 at 17:01:55

yes, use a cloth only. a wire bush will scatch the chrome
if there is a lot of rust try an orbital sander(orDA)just put some blue magic on the pad and watch it dissapear.
;D

NOTEdont use a sanding attchment,they sell buffing pads for them,or go to wal-mart and pick up a car buffer
same thing

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by torque on 08/21/05 at 18:29:01

...And i was talking about BLUE MAGIC its only for chrome
BLUE JOB works great on blued pipes,ther differant products.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mikedasavage on 08/21/05 at 18:33:01

blue job says it will work on other metals but not recommened for aluminum. Which actually brings me to ask a question. The bottom end Covers those aluminum right? anyone know a good way to polish that aluminum. Mine looks like crap i'd really like to restore it.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by torque on 08/21/05 at 18:38:13

yeah there aluminium,mothers works great they have two kinds one for all aluminiums,and the other is for billit aluminium,they vary in price from $6to$13thereboth great try the buffer it does all the work ;D

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by klx650sm2002 on 08/22/05 at 05:46:42

Carb cleaner, WURTH saBesto, from my mates bike shop (chops, streetfighters, supermotos etc.)
Plug,NGK DPR8EIX-9 is what i use in my KLX, expensive but V good.

Clive W  :D

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 08/22/05 at 07:11:45


klx650sm2002 wrote:
NGK DPR8EIX-9 is what i use in my KLX, expensive but V good.

Just as an FYI, that's NGK's iridium equivalent to the stock plug.  I agree with KLX650.  It's a great plug.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mikedasavage on 08/22/05 at 08:20:00

I bought an iridium plug but haven't put it in yet as i wanted to fine tune my new carb correctly. Is it true that the iridium plug makes the bike more rich or is it more lean?  the guy who has the tach is gonna help me adjust it, i got to fix his computer first then he is gonna hook me up but anyway he said from what i was describing blue flame and all that my bike was running rich. if the iridium makes it lean maybee that would be good  ;D

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 08/22/05 at 11:20:40

I don't know that I'd say either one was true.  For me, it's been a matter of a more reliable spark.  If you have your machine properly tuned and always have good fuel, etc. your plug shouldn't foul too quickly anyway.  But since tweaking and modifying a bike is also a hobby for some of us, optimum conditions are not always met and could require pulling and cleaning the plug.  The iridium seems less susceptible to fouling and therefore saves me from having to pull the plug and mess with it.  It more of a "set it and forget it" plug, so far as I'm concerned.  I'll probably check/change it once a year or so... maybe less, depending on how well it fares.  I put it in last November and it hasn't had a problem yet.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mikedasavage on 08/22/05 at 11:30:13

Do you think i should add the plug before i have them fine tune it or should i wait. Like i said i'm having a guy help me out so i can get it right. I'd been doing it by ear and altough the bike runs awesome i can still its not right.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Munson_kl279 on 08/22/05 at 11:39:08

I second the thougths on Mother's it's great!

I have an '86 as well still, about 23,000 miles or so, as far as major tune part of that depends on the condition of the engine.  In the case of my ride I just had the entire engine rebuilt.  But that was because it was about to explode.  The previous owner had torn down the entire bike and didn't know what he was doing and most of the bolts were stripped or missing.  And I rode the darn thing most of last season like that!

Anyway, I would say change the oil, spark plug, oil filter, and have the carb jetted.

~Munson

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 08/22/05 at 11:54:46


mikedasavage wrote:
Do you think i should add the plug before i have them fine tune it or should i wait. Like i said i'm having a guy help me out so i can get it right. I'd been doing it by ear and altough the bike runs awesome i can still its not right.

Why not just give him the new plug with the bike?

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mikedasavage on 08/22/05 at 11:56:54

o aint giving him the bike. I'm going over to his shop fix his computer then gonna help him work on my bike but i dont know how much he knows about bikes its more of a tools thing like a tach plus he knows how adjust carbs wethere its a single barrel bike carb or a four barrel out a v8 350. so i'm to save us both the trouble i'm wondering if i should just throw it in there.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Reelthing on 08/22/05 at 12:34:01


mikedasavage wrote:
o aint giving him the bike. I'm going over to his shop fix his computer then gonna help him work on my bike but i dont know how much he knows about bikes its more of a tools thing like a tach plus he knows how adjust carbs wethere its a single barrel bike carb or a four barrel out a v8 350. so i'm to save us both the trouble i'm wondering if i should just throw it in there.


If your going to try for really fine tune on the carb some plug reading is most likely needed - you might want to pick up some of the champion ra6hc's - much larger to read - and cheap - so you could swap in a new one or two or three or four , as you work through this and pop in the fine plug when your done - is this the amal you working on?

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mikedasavage on 08/22/05 at 12:55:05

Yea its the Amal. like i said the bike runs awesome but its still not right. blue flame when you shut it off some backfire etc....

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by sluggo on 08/22/05 at 13:02:11


mikedasavage wrote:
blue flame when you shut it off some backfire etc....



i have that problem also, it's hard on jeans.  



Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mikedasavage on 08/22/05 at 13:36:17

LOL i my pipe ends past my jeans no worries there.   ;D

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 08/22/05 at 14:44:06

I caught it Sluggo, never fear.


sluggo wrote:
...hard on jeans.


Oh, and I wish I'd had some of those in about the 7th grade.


Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Reelthing on 08/22/05 at 14:47:46

I'm not sure i want my pipe ending past my jeans - liable to step on it

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mikedasavage on 08/22/05 at 15:09:46

It took me about 10 seconds but LOL Reelthing

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/22/05 at 17:30:30


mikedasavage wrote:
LOL i my pipe ends past my jeans no worries there.   ;D




LOLOLOLOLOLOLOLOL!!!!!!!!!.........Bet the Ladies are like.....

                                 :o :o :o :o :o :o :o

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Reelthing on 08/22/05 at 20:57:15


mikedasavage wrote:
Yea its the Amal. like i said the bike runs awesome but its still not right. blue flame when you shut it off some backfire etc....

I have a 38mm waiting to go one or the other - it may find it self on the '02 after it has a few more miles - just broke a 1000 on it

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Susan on 08/24/05 at 07:38:40

You'll notice this topic is considerably shorter as I deleted off-topic comments. I've been away or I would have nipped this in the bud sooner. See Forum Manners (http://suzukisavage.com/cgi-bin/YaBB.pl?board=RubberSideDown;action=display;num=1124893630) for details.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/24/05 at 10:54:45

THANK YOU SUSAN!!!!!!!

This is soooo much easier to read'understand  and

MUCH more helpful to me and hopefully for others!

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Susan on 08/24/05 at 19:15:12

You're welcome. Sorry I wasn't around sooner. Glad to have you here!

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by roughrider on 08/26/05 at 22:13:53

ACCORDING TO AMERICAN SUZUKI and I quote....

The correct term is "AFTERFIRE"

Backfire occurs through the carburator.

Afterfire occurs thru the exhaust.



* am I contributing now Susan!!!!!
  Am I on topic?

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Paula71 on 08/26/05 at 22:20:27


roughrider wrote:
ACCORDING TO AMERICAN SUZUKI and I quote....

The correct term is "AFTERFIRE"

Backfire occurs through the carburator.

After fire occurs thru the exhaust.



* am I contributing now Susan!!!!!


Question then, Are you experiencing backfire? or afterfire? I would tend to think backfire would be a killer to the carb? Just my guess learning here :). Therefore causing major issues.  Where as afterfire is not more than an irritation to our ears in most cases?

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Greg_650 on 08/27/05 at 09:41:34

Well, you know, I think that I've heard this term before, however I think that I understand how our common interpretation came about.  

For example, when I fart, it is "back there" and if I then strike a match I have a "back there fire".

Hope that helps.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Still Savage on 08/27/05 at 14:55:54

Whatever the term maybe.....Whenever the engine was shut off by the kill switch, the engine or carb or muffler or all of the above created for one LOUD BANG  :o  !!!

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Ed_L. on 08/27/05 at 15:12:29

I guess I get afterfire because of a lean condition. When I lean way over I get gas out the back, with a match it's afterfire ;D ;D.

Title: use ngk-Re: Backfiring Engine!!!!!!!!!!!!
Post by PAPA_THUMP on 08/27/05 at 16:32:41

O.K.  HERE WE GO:

all of the advise is good--- but--- I was born and raised in N.Y.C.  - our motto is " QUICK AND DIRTY"

- remove the white plastic spacer= no backfire
- replace with2 washers= very little or no backfire-- better performance.
-  use ngk-dpr8ea-9
- squirt carb cleaner into carb while engine is running--
keep it running about 10 sec.
- go to mc dealer and buy a owners manual-- aprox $5
- once she is running o.k. replace plug, one shot of wd-40 into the carb-- and have fun riding !!!!

PAPA THUMP ;) ;) ;)



Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by roughrider on 08/27/05 at 18:41:25

Well Paula71

The afterfire also can cause engine problems.
They also tend to do damage to the exhaust system.
They also tend to make people very nervous when you drive by. They think a drive by shooting has occurred.

The other day I afterfired so loud at the corner of 11th and Grand in Kansas City that 4 to 6 black dudes hit the deck on the sidewalk.  This afterfire stuff is serious! Ask Lancer He'll tell you about engine problems.  

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by lancer on 08/27/05 at 19:14:23

That is why I rejet and tune the carb, to eliminate that problem.  The factory adjusts them to run EXTREMELY LEAN to pass the EPA requirements.  My concern is not the EPA, but my properly running  bike...therefore I tune.  
Besides, it runs better and faster.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Greg_650 on 08/28/05 at 07:25:04

I'm going to continue to use the term "backfire".  This old dog....

Besides, getting flames out of the carb is very remote and usually involves some seriously bad ignition or valve timing.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Ed_L. on 08/28/05 at 08:49:25

I think I'll just keep using "backfire" instead of "afterfire". Most people don't know or care about the difference anyway. Once you retune the carb it goes away and the bike runs so much better ;D. I still miss the loud backfires my '02 used to make with the stock carb tuning.  :'(

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by mornhm on 08/28/05 at 18:54:13

Afterfire makes sense, but we always called both backfires.

Backfire seemed good when it was way below zero and you had both hands cupped over the carb to warm and reduce the air flowing into a big old V-8. The backfire not only warmed your hands, but cleaned up any hairs on the back of your hands.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by barb36jack31 on 09/25/05 at 14:12:01

Re: Getting rust off chrome.  Cocoa-Cola and #0000 steel wool GENTLY works great.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 09/25/05 at 14:53:12


barb36jack31 wrote:
Re: Getting rust off chrome.  Cocoa-Cola and #0000 steel wool GENTLY works great.

LOL!  That reminds me of when we used bug-juice (generic kool-aid) in the Navy to remove tarnish from brightwork (brass).  It works very well.

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Greg_650 on 09/26/05 at 06:34:58


Savage_Rob wrote:

LOL!  That reminds me of when we used bug-juice (generic kool-aid) in the Navy to remove tarnish from brightwork (brass).  It works very well.


I remember Bug Juice.  I thought that it's name came from the unknown things that were often floating in it.

:P

Title: Re: Backfiring Engine!!!!!!!!!!!!
Post by Savage_Rob on 09/26/05 at 07:35:14


Greg_650 wrote:


I remember Bug Juice.  I thought that it's name came from the unknown things that were often floating in it.

:P

That's always possible.  I stuck to drinking coffee and using bug-juice as a solvent.

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