Question about 2003 Harley Davidson FLSTCI Heritage Classic

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When bike is sitting up right it bogs out and back fires won't stay running, but if put the kick stand and lean it to the side it clears up and runs good and when stand staight up again it starts to bog out and back fire again confused do I have a bad sensor some where? fuel injected

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  • 33 Answers

I would say you have problem in the tank with the fuel pump line. When you lean the bike on the kickstand all the fuel goes to the left side an covers the line which then creates enough fuel pressure to run the bike. If you filled the tank full it would probably run ok until the fuel level gets below the bad line.

Posted on Oct 06, 2010

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It has been sitting or 3 months and won't start and it is a kick start Suzuki 4 wheeler and it was running great 3 months ago but this cold whether I think is what the problem is .


Hi erik
My first point of call would be to clean the spark plug, it could have gotten corroded while the bike has been standing. Hope this helps.

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What's your problem?http://www.fixya.com/motorcycles/p2564237-husqvarna_2011_wr300


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1 Answer

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Bit of a problem go get the bike running.


Can you confirm if the bike, once running, runs well below 3000rpm?

I've experienced this model not liking pilot jet usage due to an accumulation of fine particles in the fuel which build up and block the pilot jets.

Above about 3000rpm, it runs on mains jets.

If this is the problem, you can use a high quality fuel filter but it must be high flowing as this model drinks fuel.

Looking forward to your post.

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Start the truck at night, then look under the hood while it's running. Don't use a flashlight or your headlights; it should be dark !

If you see sparks anywhere around the engine, you've found the problem. Now you can turn on a light to see where they're coming from - probably from a cracked ignition coil.

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1 Answer

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no doubt this bike is running very lean at idle. Thats the way the EPA wants it. Im a harley mechanic and i used to work in a US dealer. all carb bikes at set up time had the carbs "readjusted". We drilled out the EPA plug and turned the idle air screw out and drilled out the pilot jet too. The bikes worked much better. we were at sea level too so the bikes were very lean from the factory. I can imagine that after the new legislation that came into force they are even leaner and require a full warm up to run properly. Warmed up means you put your hand on the motors head and its hot enought to have to jerk it away. this could take more than a couple minutes. and yes our "readjustment" was illegal. i advice you to do the same.

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