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I keep fouling plugs on my 2005 vstar 1100 classic tried going a step hotter but they still foul after a very short time? exhaust is open was that way when I bought it
Re: I keep fouling plugs on my 2005 vstar 1100 classic...
Just a thought. is your air filter clean? A dirty filter will make it burn more fuel and cause the plugs to foul.Is your choke working properly? Both of these will foul plugs and use more fuel.
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What is causing the fouling? Engine oil? On a two cycle dirt bike, the fouling can be caused by excessive oil in fuel mix. I believe 50 to 1 is the correct ratio yet you may want to cut back, a little at a time, on the oil or run hotter fuel. The exhaust system will also accumulate enough oil sludge to impede the exhaust flow causing poor performance and plug fouling. A two cycle must breath freely to keep itself internally clean. Air cleaner to exhaust. Proper fuel mix should have little , very little. Good Luckand hopefully this helps you.
If any of the spark plugs are fouling out there has to be a carb problem. Are they black when you pull them? Are all of them fouled or just a couple?
If any of them are fouled then you are needing to clean and adjust the carbs.
sounds major. Clanking and low on oil sounds like a broken piston ring. Suggest dealer check with compression tester rear cylinder. Replace v star with Harley if necessary.
Try running a hotter plug. AND NEVER TOUCH THE THROTTLE when trying to start it. I had one for years with the same problem. Switched to a hotter plug and it helped alot. But if you touch the throttle, it will foul the plug instantly.
I would stay with the same heat range(BR8) to stay on the safe side. You didn't say if when you are at the camp sight the bike is cold and just off the truck or warm and right off the trail. But usually alot of 2strokes need to be cleaned out when their being warmed up or they can foul a plug. Get it started, blip the throttle a few times to get some heat in the cylinder and then hold it open until you hear it rev faster and run smooth. Thats usually enough.
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