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Honda MX & Off-Road Dirt Bikes
just picked up an 83 honda xl250...and it's already driving me crazy
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[QUOTE="Ol'89r, post: 1294591, member: 17212"] Your air screw should be adjusted from 1 1/2 turns to 1 3/4 turns out from the seated position. Check your valve clearance. Should have approx .002" on the intake and .003" on the exhaust valves. Tight valves will cause your bike to run hot. The hotter the bike gets the worse it will run. Check the compression after adjusting the valves. Should have at least 120psi. Check your intake manifold. Especially at the area where the rubber is bonded to the aluminum mounting plate. On the older XR's/XL's, the rubber can separate from the plate and it is hard to see unless you remove the manifold or try to pull it back away from the head. When you cleaned your carb did your remove all of the jets and blow air through the orifices? Especially the pilot jet and pilot air orifice. Remove the pilot jet and the air screw and make sure air comes out of both holes. Make sure you can see daylight through the hole in the pilot jet. A bent slide needle will cause a bike not to idle down correctly. Remove the needle from the slide and roll it on a flat table. If it is bent, replace it. With the electronic ignition your bike does not have a mechanical advance. It is done electronically. If the bike is running so hot it diesels then something drastic is wrong with it and you should not try to ride it until you find out the problem. [/QUOTE]
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Dirt Bike Discussions By Brand
Honda MX & Off-Road Dirt Bikes
just picked up an 83 honda xl250...and it's already driving me crazy
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