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Message started by ArielT on 07/15/10 at 14:23:41

Title: Turns over, but scraping noises
Post by ArielT on 07/15/10 at 14:23:41

So, I had a sort of abortive attempt to fix my Savage a few times, but I've got basically nothing else to do, so I'm pretty dead set this time.

History (Feel free to skip)
I have a 1998 Savage that worked okay for a while when I got it in 2008.  Then I went away for a few weeks and when I came back, had a dead battery.  I bought a battery minder and eventually a whole new battery to get the thing working again.  Eventually I needed to clean the carb, and I just sort of left it for a about a year never quite finding time to clean it out.  Anyway, I eventually cleaned it out and found my old petcock had gas in the vacuum line.  It's been about 4 months since then and I finally replaced the fuel line.

The fuel tank has a coating in it, but I'm somewhat uncertain if it's still effective.  The fuel seems to be flowing okay through the new petcock.  My battery is also freshly charged, and not very old.
End History

Anyway, The actual problem is that when I try to start up the bike, I can hear the initial engine turn over, but instead of revving I get a sort of scraping sound.

I'm going to hazard a guess this is probably a sign the carb is gummed up and I should clean it out again.  Which I probably need to do anyway, but I'd like to know if there are other issues I should be aware of.

Title: Re: Turns over, but scraping noises
Post by Serowbot on 07/15/10 at 15:01:33

1. Very unclear here...  Gas in vac line/ you replaced the fuel line?...
You need a new petcock...

2. Scraping noise?... is not a lean carb... no way...
Something is scraping.... locate the source of that sound...

Check that you have oil,... does it have gas in the oil?...




Title: Re: Turns over, but scraping noises
Post by ArielT on 07/15/10 at 15:07:17


7C6A7D60786D607B0F0 wrote:
1. Very unclear here...  Gas in vac line/ you replaced the fuel line?...
You need a new petcock...
 Yes, replaced the petcock.  Sorry, thought I mentioned that.


7C6A7D60786D607B0F0 wrote:
2. Scraping noise?... is not a lean carb... no way...
Something is scraping.... locate the source of that sound...

Check that you have oil,... does it have gas in the oil?...
Hrm.  Okay, listened to it a couple more times.  I'm just being dumb...  I guess the starter without the revving just sounds really harsh to me. (Sorry for the miscommunication)  I can hear the engine trying to turn over, but not quite making it.

...Ugh, guess that makes my title wrong too.

Title: Re: Turns over, but scraping noises
Post by Serowbot on 07/15/10 at 15:16:51

Okay...

It's been a long time since the bike has run...

Pull the sparkplug and squirt a teaspoon of oil into the cylinder... This will re-establish a compression seal between the rings and the cylinder walls...
Then try to start,... don't crank more than 5 or 10 seconds... you might overheat the starter... give a little rest 2 or three attempts... try only a couple times...

If it  still won't start,... pull the air filter, and and spray wd40 into the carb from there for 2 or 3 seconds while you crank...
Stop spraying if it starts... try this a couple of times...

If it doesn't start,... check back here...

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/15/10 at 16:16:57


5B4D5A475F4A475C280 wrote:
Pull the sparkplug and squirt a teaspoon of oil into the cylinder... This will re-establish a compression seal between the rings and the cylinder walls...
Then try to start,... don't crank more than 5 or 10 seconds... you might overheat the starter... give a little rest 2 or three attempts... try only a couple times...
Okay, need to go buy a spark plug wrench, then.


Quote:
If it  still won't start,... pull the air filter, and and spray wd40 into the carb from there for 2 or 3 seconds while you crank...
Stop spraying if it starts... try this a couple of times...
This seems simpler.  The spark plug needs to be done first? (I guess the  reseal needs to happen anyway?)

Title: Re: Turns over, but scraping noises
Post by Serowbot on 07/15/10 at 16:34:49


567F7C7C7F685E4A1A0 wrote:

Quote:
If it  still won't start,... pull the air filter, and and spray wd40 into the carb from there for 2 or 3 seconds while you crank...
Stop spraying if it starts... try this a couple of times...
This seems simpler.  The spark plug needs to be done first? (I guess the  reseal needs to happen anyway?)


You can try it...  the wd40 might be enough...
Keep your face clear of the filter hole in case it backfires... ;D...

the oil in the cylinder is only necessary if enough gas has passed through the engine without starting, that the  gas has washed the cylinder of it's oil seal...

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/15/10 at 17:16:31


5147504D55404D56220 wrote:
You can try it...  the wd40 might be enough...
Keep your face clear of the filter hole in case it backfires... ;D...
Eek, will do.


Quote:
the oil in the cylinder is only necessary if enough gas has passed through the engine without starting, that the  gas has washed the cylinder of it's oil seal...
I was having trouble with it revving up and dying without starting before (the petcock problem), so it's possible that this is indeed the case.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/15/10 at 18:48:34

The 17mm spark plug wrench / socket seems strangely absent from any of my local auto parts stores.  I assume this is Austin so some motorcycle store probably has one, but it's seeming more and more likely I'm I going to have to order this online.  Any suggestions?

Title: Re: Turns over, but scraping noises
Post by justin_o_guy2 on 07/15/10 at 21:06:26

The lawnmower section of lowes/ home`despot has plug wrenches, thin walled ones.
Nows the time to9m modify the head chrome to let you get the plug w/o pulling the tank

Title: Re: Turns over, but scraping noises
Post by Digger on 07/15/10 at 21:43:15


537A79797A6D5B4F1F0 wrote:
The 17mm spark plug wrench / socket seems strangely absent from any of my local auto parts stores.  I assume this is Austin so some motorcycle store probably has one, but it's seeming more and more likely I'm I going to have to order this online.  Any suggestions?


FWIW...

On mine (see signature), I use a 3/8" drive 18mm deep-well socket for the spark plug.

YMMV!

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/15/10 at 22:11:12


4A555354494E7F4F7F47555912200 wrote:
Nows the time to9m modify the head chrome to let you get the plug w/o pulling the tank

Do you have a link to the procedure?

Title: Re: Turns over, but scraping noises
Post by ls650v on 07/16/10 at 00:33:24

After you pull the spark plug, reconnect the spark plug lead to it and lay the plug against the head with the threaded portion touching the head.  Crank the engine to verify that a strong blue spark jumps across the electrode gap.  If you don't see a spark or if the spark jumps from the center electrode insulator to the side wall of the spark plug then go buy a new plug.

Title: Re: Turns over, but scraping noises
Post by ero4444 on 07/16/10 at 09:39:53

I did not see where you actually checked the battery or push-started - so it could still be your battery is not cranking the starter hard enough to start.   A new lead-acid battery that sits for a year will sulfate, and will not accept a full charge.  If you can push-start it then the battery is crippled.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/16/10 at 10:49:40


786F72292929291D0 wrote:
I did not see where you actually checked the battery or push-started - so it could still be your battery is not cranking the starter hard enough to start.   A new lead-acid battery that sits for a year will sulfate, and will not accept a full charge.  If you can push-start it then the battery is crippled.

I had the battery on a tender.  I think that's intended to keep exactly what you describe from happening.  I guess I could pull out my voltmeter and see, though.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/16/10 at 14:27:14


1006110C14010C17630 wrote:
Pull the sparkplug and squirt a teaspoon of oil into the cylinder... This will re-establish a compression seal between the rings and the cylinder walls...
Then try to start,... don't crank more than 5 or 10 seconds... you might overheat the starter... give a little rest 2 or three attempts... try only a couple times...

If it  still won't start,... pull the air filter, and and spray wd40 into the carb from there for 2 or 3 seconds while you crank...
Stop spraying if it starts... try this a couple of times...

Should I be doing these with the gas tank on?  Also, is the WD40 intended to clean things out or is it a matter of lubrication?  I have some actual carb cleaner I could always spray in.  Not sure what this procedure is doing, really.

Title: Re: Turns over, but scraping noises
Post by Serowbot on 07/16/10 at 15:16:00

Ariel,... the wd40 was intended to be used as a mild starting fluid...

Sorry for steering you wrong here,... but I just read that wd40 has changed it's formulation...  It now uses CO2 as a propellant and won't work very well as a starting fluid any more...
I guess you'd do best to buy a can of starting fluid... Look for one that says it includes a lubricant in it....

Again sorry...

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/16/10 at 17:50:40


2432253820353823570 wrote:
Ariel,... the wd40 was intended to be used as a mild starting fluid...

Sorry for steering you wrong here,... but I just read that wd40 has changed it's formulation...  It now uses CO2 as a propellant and won't work very well as a starting fluid any more...
I guess you'd do best to buy a can of starting fluid... Look for one that says it includes a lubricant in it....

Again sorry...

Yeah, no problem.  Good to know what I'm looking for.

In other news, I got an 18mm spark plug socket that wasn't deep well.  It proved that an 18mm would probably fit, but now I'm having trouble finding an 18mm deep well.  Decided I should just order the proper thing online but I haven't really been able to find one.  Anyone got any links to what I need?

Title: Re: Turns over, but scraping noises
Post by bill67 on 07/16/10 at 18:10:30

Why don't you go to a Suzuki dealer and get one.

Title: Re: Turns over, but scraping noises
Post by Digger on 07/16/10 at 19:33:16


624B48484B5C6A7E2E0 wrote:
[quote author=2432253820353823570 link=1279229021/15#15 date=1279318560]Ariel,... the wd40 was intended to be used as a mild starting fluid...

Sorry for steering you wrong here,... but I just read that wd40 has changed it's formulation...  It now uses CO2 as a propellant and won't work very well as a starting fluid any more...
I guess you'd do best to buy a can of starting fluid... Look for one that says it includes a lubricant in it....

Again sorry...
.... Anyone got any links to what I need?[/quote]

http://www.sears.com/shc/s/p_10153_12605_00944435000P?prdNo=1&blockNo=1&blockType=

IHTH!

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/17/10 at 13:50:47


78555B5B594E3C0 wrote:
http://www.sears.com/shc/s/p_10153_12605_00944435000P?prdNo=1&blockNo=1&blockType=

IHTH!

Isn't this just a standard socket?  Don't I need one particular for spark plugs?

Title: Re: Turns over, but scraping noises
Post by verslagen1 on 07/17/10 at 15:48:03

any socket of the correct size will do.
although it's nice to have the insert, that's all it is an insert.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/17/10 at 16:49:27


4E5D4A4B54595F5D5609380 wrote:
any socket of the correct size will do.
although it's nice to have the insert, that's all it is an insert.

...Oh.  That makes this much easier.

Title: Re: Turns over, but scraping noises
Post by Digger on 07/17/10 at 18:17:45

I don't have an insert in the socket I use for the plug.

Not needed, really, since the plug is not recessed much, unlike in some other engines.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/19/10 at 15:59:44

Alright, well.  Progress.  I pulled my spark plug and found it rather half-covered in black stuff.  Likely carbon fouled.  When I hooked it up to the lead and tried to test, I got a weak spark.  So, I whipped out my voltmeter to test the battery and found it at a comfortable 12.5 V.

Does this mean I just need to get a new spark plug?  Should I try to check the wiring first, or is the spark plug just a way more likely culprit?

Title: Re: Turns over, but scraping noises
Post by justin_o_guy2 on 07/19/10 at 23:11:06

Slap a plug in it, get it running, if it craps out soon, then get another plug & look for the problem.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/26/10 at 05:34:58

Well.  There's no air filter, apparently. (WTF?)

I managed to get it going with the starter fluid.  It didn't stay going, revved a bit and died, which is maybe the problem I was having before I thought I solved with the petcock.  

Title: Re: Turns over, but scraping noises
Post by justin_o_guy2 on 07/26/10 at 07:13:20

& how longhas it been being ridden w/ no air filter? How many miles have you had on it?

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/26/10 at 07:53:51


7C6365627F7849794971636F24160 wrote:
& how longhas it been being ridden w/ no air filter? How many miles have you had on it?

I realized I took it out when I got a new one and just never put the new one in.  Probably hasn't had more than 10 miles on it since.  But it's been about a six months that there just hasn't been an air filter in it.

Title: Re: Turns over, but scraping noises
Post by justin_o_guy2 on 07/26/10 at 08:48:25

MMkay, no harm done then, unless those 10 miles were n a sand storm.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/26/10 at 09:10:43


786761667B7C4D7D4D75676B20120 wrote:
MMkay, no harm done then, unless those 10 miles were n a sand storm.

Out of curiosity, how many would it take before there was harm?

Erm, but more immediately.  If the starter fluid works, does that rule certain things out / point to something?

Title: Re: Turns over, but scraping noises
Post by bill67 on 07/26/10 at 09:16:10

My wife drove her Suzuki 1980 Suzuki GN 400 over 500 miles on a trip with out air filter and many miles after that and I could see no harm it did.Other than the fastest it would go was 75 mph with out filter 82 mph with filter.

Title: Re: Turns over, but scraping noises
Post by ArielT on 07/26/10 at 10:03:04


292227277D7C4B0 wrote:
My wife drove her Suzuki 1980 Suzuki GN 400 over 500 miles on a trip with out air filter and many miles after that and I could see no harm it did.Other than the fastest it would go was 75 mph with out filter 82 mph with filter.

Neat.  Good to know.

Title: Re: Turns over, but scraping noises
Post by Digger on 07/28/10 at 21:18:18


1C35363635221400500 wrote:
[quote author=786761667B7C4D7D4D75676B20120 link=1279229021/15#28 date=1280159305]MMkay, no harm done then, unless those 10 miles were n a sand storm.

Out of curiosity, how many would it take before there was harm?

Erm, but more immediately.  If the starter fluid works, does that rule certain things out / point to something?[/quote]

Pretty much rules out compression, spark, and air supply problems.

I would suspect a fuel/carb related problem.

Title: Re: Turns over, but scraping noises
Post by justin_o_guy2 on 07/28/10 at 22:43:10

Out of curiosity, how many would it take before there was harm?




Too many variables to know. My dad bought a used car & was very happy with it. His job caused him to run up & down a lot of oilfield roads, very dusty/dirty. He saw the thing start using oil after about 3 or 4 weeks, & he drove a LOT of miles, generally close to 100,000 a year, he broke 100,000 one year. He took it to his mechanic & found he had no air cleaner. Sold it, took his loss,, bought another car. Pretty sure he checked the air cleaner on that one.

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