SuzukiSavage.com - Spark plug continues to foul, help

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28890 L.A. California Gender:	Re: Spark plug continues to foul, help Reply #15 - 11/03/10 at 19:25:40 then it's the coil or CDI
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99savage Junior Member Offline SuzukiSavage.com Rocks! Posts: 51 Strawberry Plains, TN Gender:	Re: Spark plug continues to foul, help Reply #16 - 11/03/10 at 19:45:26 verslagen1 wrote on 11/03/10 at 19:25:40: then it's the coil or CDI Any idea why the plug would be great at first and get progressively worse? Is that symptomatic of a bad coil or cdi?
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verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28890 L.A. California Gender:	Re: Spark plug continues to foul, help Reply #17 - 11/03/10 at 19:59:09 last one in thread... http://suzukisavage.com/cgi-bin/YaBB.pl?num=1285706552/8#8 http://suzukisavage.com/cgi-bin/YaBB.pl?num=1279724838/5#5 Diagnostics in this one... http://suzukisavage.com/cgi-bin/YaBB.pl?num=1268914576/56#56
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99savage Junior Member Offline SuzukiSavage.com Rocks! Posts: 51 Strawberry Plains, TN Gender:	Re: Spark plug continues to foul, help Reply #18 - 11/03/10 at 20:09:25 verslagen1 wrote on 11/03/10 at 19:59:09: last one in thread... http://suzukisavage.com/cgi-bin/YaBB.pl?num=1285706552/8#8 http://suzukisavage.com/cgi-bin/YaBB.pl?num=1279724838/5#5 Diagnostics in this one... http://suzukisavage.com/cgi-bin/YaBB.pl?num=1268914576/56#56 Thanks.
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Boofer Serious Thumper Offline Nearly too old. Posts: 1760 N Ms Gender:	Re: Spark plug continues to foul, help Reply #19 - 11/04/10 at 19:43:43 Is there any smoke at the exhaust? A stuck or broken ring causing low compression could be causing hardstart, and the oil may be slowly passing to the plug electrode.
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99savage

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Re: Spark plug continues to foul, help
Reply #20 - 11/05/10 at 05:07:09

Boofer wrote on 11/04/10 at 19:43:43:

Is there any smoke at the exhaust? A stuck or broken ring causing low compression could be causing hardstart, and the oil may be slowly passing to the plug electrode.

Very little smoke at start up. I'm beginning to think that I am possibly fouling the plug because of the carb being tuned too lean. I plan to first change plugs and then follow Lancer's directions to tune it before swapping petcocks. The reason I think this is because it is only 1 turn out. I possibly didn't idle up before adjusting giving me a false "reading".

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Oldfeller--FSO Serious Thumper ModSquad Offline Hobby is now "concentrated neuropany" Posts: 12673 Fayetteville, NC Gender:	Re: Spark plug continues to foul, help Reply #21 - 11/05/10 at 05:11:26 Sorry, lean doesn't foul your plugs. It makes them turn white. Way too rich does foul your plugs (crumbly dry black), as does oil consumption (greasy black).
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99savage

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Re: Spark plug continues to foul, help
Reply #22 - 11/05/10 at 06:11:44

Oldfeller--FSO wrote on 11/05/10 at 05:11:26:

Sorry, lean doesn't foul your plugs. It makes them turn white.

Way too rich does foul your plugs (crumbly dry black), as does oil consumption (greasy black).

Plugs can be damaged due to excessive engine temperature which can result from lean condition I believe. Maybe my use of the word "foul" is incorrect.

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EJID Serious Thumper Offline Work to ride and ride to work. Posts: 1536 Pocatello, ID Gender:	Re: Spark plug continues to foul, help Reply #23 - 11/05/10 at 07:37:50 So what exactly have your plugs looked like?
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justin_o_guy2 Serious Thumper Offline What happened? Posts: 55279 East Texas, 1/2 dallas/la.	Re: Spark plug continues to foul, help Reply #24 - 11/05/10 at 08:06:33 Pick the pic closest to your plugs look, please.. Handy little chart, Nice!
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99savage Junior Member Offline SuzukiSavage.com Rocks! Posts: 51 Strawberry Plains, TN Gender:	Re: Spark plug continues to foul, help Reply #25 - 11/05/10 at 09:34:56 justin_o_guy2 wrote on 11/05/10 at 08:06:33: Pick the pic closest to your plugs look, please.. Handy little chart, Nice! I haven't pulled the current plug yet. The others that have stopped firing, IIRC, have looked closest to "normal" or "too hot". I'll pull it over the weekend and post my findings then.
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Re: Spark plug continues to foul, help
Reply #26 - 11/06/10 at 11:20:31

justin_o_guy2 wrote on 11/05/10 at 08:06:33:

Pick the pic closest to your plugs look, please..

Handy little chart, Nice!

Just pulled the plug; looks dry, sooty (not built up), and black. Carbon fouling? New plug fires great. New petcock will be here Monday. I'll replace it, clean the tank, check the carb adjustment per Lancer's directions, and go from there. Thanks

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Re: Spark plug continues to foul, help
Reply #27 - 11/07/10 at 17:17:00

New plug now looks just like the one I took out, so I decided to check out some other things. Valves are dead on .004" I decided to pull the carb and disassemble it to just be sure. That's when I discovered that after messing with the carb tuning for so long, the fuel mixture screw is buggered up to the point that it will be tough to get out to replace it. To prevent ordering more parts than what I need, what comes with a carb rebuild kit? Thanks

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