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Message started by Whoas on 05/29/16 at 07:09:20

Title: Things are getting complicated
Post by Whoas on 05/29/16 at 07:09:20

Hi guys, Ill try to keep this as short but as detailed as I can.
So I have an 87 ls 650 that I purchased less than a year ago.  Allegedly ran with no issues was just taking up space in someones garage.  Got it all cleaned up and had it running great.  Its always had a bit of trouble starting up. Nothing too serious just needs to turn over a few more times than normal.  Since I had plenty of gas and a brand new battery I was pretty confident and saying it was a starter issue.  Put about 5,000 miles with it running the way it was no issues at all.  

So over the winter I replaced the air box with a cone filter.  Put a straight pipe with no muffler/baffle on it.  And I replaced the famous 'leaking head plug'.  The black stopper like plug under the cylinder head cover.  Started running a bit differently because of the new air flow.  Didnt want to stay idle, lots of backfiring even a few flames sometimes. (this was all done during the winter in PA so 50 degrees or below) So my friend and I spent a good bit of time working on adjusting the air fuel mixture side note*He has a 2006 Suzuki Boulevard that he turned into a bobber.  He did it all himself thats the only reason i trust his judgement with my bike*.  We got it running well, but it needed to warm up before it would idle without the choke.  (used second stage to start and run in for a while)  Well recently the temp around here shot up to 85-90 degrees with (what feels like) 100% humidity.  So on the way to work one morning the bike just shut off on me, and had trouble starting back up.  Ever since then Ive noticed its been sputtering while Im riding, more when Im at lower RPMs but randomly throughout.  And were talking sputtering like darn near stalling out, very noticeable.  So I go to look over the bike yesterday and noticed the negative battery terminal is melted, and the bike wont even turn over let alone start up half the time.  It will shut off when I press the ignition start up button and if I wiggle the negative  battery cable around it turns back on.  I can tell this becuase my neutral light acts as an indicator.  Im not a mechanic I just use common knowledge and the internet.  90% of my bike knowledge comes from this site.  
But at this point my assumption is I have a crappy started thats taking too much time to start up which would cause my negative battery connection to heat up and melt the lead terminal[smiley=angry.gif].  As far as the sputtering Im sort of lost... :-?

So my questions are;
What are the chances the electrical problem and sputtering issue are related?

Where should I start as far as diagnosing these problems?

I know with the new less-restricted air flow that up jetting is somewhat crucial.  But if thats the case why has it been running so well in the winter?  Are heat and humidity really that big of a factor?

Any and all information/advice will help greatly.  Also the kicker is that I need to get my bike inspected this week because Im taking the motorcycle safety course on the 4th.   So the sooner I can figure this out the sooner I can get what I need to fix it.  Thanks guys.  Let me know if any pictures are needed or will help diagnose things a little easier.

Title: Re: Things are getting complicated
Post by Serowbot on 05/29/16 at 07:19:31

Start with the wiring... you know that;s a problem because of the neutral indicator.
Disconnect, contact clean, and reconnect every socket you can find,.. under seat, tank, etc..

Title: Re: Things are getting complicated
Post by Savageman on 05/29/16 at 08:23:54

I would check the POS stock fuel petcock vacuum line and make sure no fuel is coming out of the vacuum line. Change it to a 660 raptor petcock ASAP. Avail on Amazon.

Where is the idle mixture screw set to? Should be around 1-1/2 to 1-3/4 turns. The carb may be dirty inside (jets plugged with crap) I would install the Jetset that Lancer sells for 29.95 will help greatly with popping and starting issues.

Check the valve lash in and ex need .004 inches each.

Lastly put in a new spark plug. :-?

Title: Re: Things are getting complicated
Post by gizzo on 05/29/16 at 08:47:22

And have you checked that your cone filter isn't blocking the air passage inn the inlet side of the carb?

Title: Re: Things are getting complicated
Post by batman on 05/29/16 at 12:11:14

THE NEG. BATTERY terminal is melted ???? I'd look again .The only reason it has insulation is to protect it from the elements.Be sure your not looking at the POS. as this could be arcing to ground, off and on, and killing power to the ignition system,and killing your battery.

Title: Re: Things are getting complicated
Post by Whoas on 05/29/16 at 15:57:59

Things ive completed
Old petcock has been swapped out with the Raptor 660 about 4,000 miles ago

Valves were checked and adjusted about 2,500 miles ago

Put a new spark plug in around 2,500 miles ago

The cone filter doesnt seem to be obstructing any inlets

The negative terminal thats melted...Im not only sure....Im positive.

Questions

As far as the idle mixture; is the 1 1/2 - 1 3/4 setting for any temperature/humidity level?  I usually start with it 1 1/2 out and adjust accordingly by 1/4 turn intervals listening for idle speed and such.  In other words should my idle screw be between 1 1/2 - 1/ 3/4 regardless of the climate?

The carb has been cleaned twice already but jet obstruction does seem like a possibility.  That will probably come off and get cleaned again.

And for the jetset kit, are there different stages to the kits?  Ive heard/seen that a 'Stage 5 kit' is what i should be looking for with what i have done.

Working on getting some pictures up.

Thanks again guys

Title: Re: Things are getting complicated
Post by Whoas on 05/29/16 at 15:59:14

As i described in my original post when i turn the bike one and hit my ignition button the bike shuts off when i jostle these two wires, the bike turns back on.

Title: Re: Things are getting complicated
Post by Whoas on 05/29/16 at 15:59:53

Cone air filter doesnt seem to be obstructing anything

Title: Re: Things are getting complicated
Post by Whoas on 05/29/16 at 16:00:25

Definitely melting my NEGATIVE terminal

Title: Re: Things are getting complicated
Post by justin_o_guy2 on 05/29/16 at 16:07:26

Resistance causes heat. If you can get it apart, replace the nut and bolt and clean up everything.
Check out the battery, take it to be tested,

Title: Re: Things are getting complicated
Post by batman on 05/29/16 at 16:25:58

Ican't see in the pic's is your battery box stock?Is it metal? the strap going across doesn't look tight to the top of the battery. If the battery bounces up down while riding and your pos. lead strikes the metal box you have a dead short ,which will send the entire battery charge to ground, that's a lot of power ,and lead has a low melting point. This type of thing can make your battery explode!!!!      You should be looking at the POS. cable and making sure it"s not contacting any metal anywhere.                        

Title: Re: Things are getting complicated
Post by verslagen1 on 05/29/16 at 16:27:17


06393E3022510 wrote:
Cone air filter doesnt seem to be obstructing anything


This is what we are trying to tell you about...
http://cavimike.com/savagefilter01.JPG

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1347609265

Title: Re: Things are getting complicated
Post by verslagen1 on 05/29/16 at 16:33:57


2B283D2428277D71490 wrote:
Ican't see in the pic's is your battery box stock?Is it metal? the strap going across doesn't look tight to the top of the battery. If the battery bounces up down while riding and your pos. lead strikes the metal box you have a dead short ,which will send the entire battery charge to ground, that's a lot of power ,and lead has a low melting point. This type of thing can make your battery explode!!!!      You should be looking at the POS. cable and making sure it"s not contacting any metal anywhere.


That's a stock bat box without the plastic top.

yeah, I know what that looks like.

Title: Re: Things are getting complicated
Post by verslagen1 on 05/29/16 at 16:39:25


350A0D0311620 wrote:
As i described in my original post when i turn the bike one and hit my ignition button the bike shuts off when i jostle these two wires, the bike turns back on.

one is the ground wire, and your bat term looks like sh!t.
unless you can clean this up, it's death to the battery.
the other is the positive wire going to the relay.
check the connections to both cables at both ends.

Title: Re: Things are getting complicated
Post by batman on 05/29/16 at 17:56:50

using a cone filter and a straight pipe!the worst combo to try jet your carb to,you might want to think about some slide in baffle at least, you need some back pressure in your exhaust to have a chance at tuning the carb.Loud is just loud but it won't make your bike run well.

Title: Re: Things are getting complicated
Post by Whoas on 05/30/16 at 07:55:42

Started digging around and found a few things out going on in the carb.  Jets look clean but when I removed the float bowl there was a small amount of fuel on the gasket.  Now Im not sure if this signifies a bad gasket or maybe some leaked out as I took the bowl off while it was on its side.  Regardless I messaged LANCER about the jet set kit as well as the gasket so just waiting to hear back from him.
Theres a chance the the air passage could have been slightly blocked but the cone filter, also I found a little bit of fuel on the inside of the rim of the cone filter... not sure what that means.  So Im going to doctor the filter a bit to make sure its working properly and doesn't block anything.
Also the rear turn signals have been swapped out with a set of later year factory turn signals.  The bullet connectors on the ends of the lights have been soldered and shrink wrapped.  It appears as though the shrink wrap is either getting too hot or sitting on something hot because if you look close you can see it sort of 'cracking'. As of now thats the closest thing ive found to any damaged wires/connections.
Im still searching tough...  

Title: Re: Things are getting complicated
Post by Whoas on 05/30/16 at 07:58:18

The turn signal splice that i described in the last post..

Title: Re: Things are getting complicated
Post by KennyG on 05/30/16 at 08:25:33

Who,

It looks like the melted area on the shrink tubing was caused by using a Bic lighter to shrink the tubing.

If you re-do the shrink tubing put a piece of cardboard behind the shrink tubing to keep the heat from escaping, and you can get by with your wife's hair dryer to shrink the joint.

Kenny G

Title: Re: Things are getting complicated
Post by Whoas on 06/03/16 at 15:38:37

For anyone still lying awake at night wondering if i found the issue...
So I ran through all of my connections/contact areas, cleaned, sprayed, and greased all of them from front to back.  On a few other sites/threads I noticed a handful of riders complaining about the same issue with the melted terminals.  And almost all of them mentioned how a loose connection to the battery might cause this type of problem.  So I went out and got a new battery, cleaned the terminals made sure the contact with the battery was 100%.  And i also cut a piece of my cone filter out to insure an unobstructed air flow.  pulled the carb, cleaned it.  Started her up with ease, ran great.  I knew i didnt find the problem so i was very reluctant to even ride it.  Next day i ran through all the wiring AGAIN couldnt..find anything.
Yesterday I had my handlebars apart so i could lengthen my risers.  As im turning the handle bars left and right i notice i dont hear the tapping of the stopper (the two stoppers on the triple tree that stop the handle bars) when i turn to the right.  low and behold one of my turnsignal wires made its way in between and was getting smashed apart.  A tiny pinhole sized breech in my wire was causing my short circuit.  Taped it up for now till i have some time to patch it.  Havent had a problem since.

Thanks again for all your input 8-)

Title: Re: Things are getting complicated
Post by justin_o_guy2 on 06/03/16 at 17:20:34

That was gonna be my Next suggestion..
Coff, coff..  

Daggum good going.  Noticed the different sound..

Title: Re: Things are getting complicated
Post by Savageman on 06/03/16 at 17:26:24

Them sparkens cause shorten and melten. ::)

Title: Re: Things are getting complicated
Post by KennyG on 06/03/16 at 17:35:06

Whoas,

It is always good to hear when a forum member tracks down and sorts out a problem.

Attaboy!

Kenny G

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