Question about Motorcycles
Posted by Anonymous on
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Posted on Jan 02, 2017
I replaced spark plugs, filters, tightened boots, etc. Nothing worked. Then I dumped Sea Foam in the gas tank. 50 miles later...no more backfiring. I used 1 ounce per gallon. Get it at any auto parts store.
Posted on Oct 30, 2009
May be running too lean or too rich. Check the color of your plugs, black dry and sooty means they are rich, white with blisters lean.
Posted on Apr 03, 2010
Probably the idle jets are set too lean. From what I have read, the factory settings are often wrong. Drill out the plugs and adjust. If you use the right size drill you can get in with a small screwdriver and make the adjustments without totally removing the plug. This eliminates the possibility of losing the adjustment screw, which can happen if the plugs are not there.
Best thing to do is put in a Cobra stage 1 jet kit. You will be amazed at how much better the bike runs.
Posted on May 12, 2010
SOURCE: backfireing when decelerating
it can be caused by a number of things including.
lean mixture--air leak intake or exhaust,
leak in exhaust gasket
low ignition voltage- bad plug,lead\resister cap
tight valve clearance
and a number of less likely problems like faulty kill switch, ignition switch\cable connecter,igniter.
If it is not the standard exhaust, the jetting may need a slight change
So first give it a tune and service, check valve clearances,new aircleaner, drain carbs, tighten exhaust bolts and clamps, intake clamps and bolts,it may need exhaust gaskets
Posted on Jul 08, 2010
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Apr 20, 2016 | Honda Motorcycles
it sounds like its starving for fuel, when it runs lean you will get backfires and if its running rough then it may be starving for fuel at idle. Try adjusting you mixture screw and see it the engine will smoot out. Your carb my be dirty and not allowing enough fuel through it.
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