Question about 2002 Honda VT 750 C2 Shadow
My motorcycle backfires on deceleration. How do I fix this problem? It is a 2002 Honda 750 ACE deluxe. Thank you.@
Hi, Mmme3331 if your carburetor or exhaust is:
COUGHING is usually caused by an air leak in the intake system and will generally have the same telltale signs, a wet or damp build up of oil/gas seepage at the intake manifold to cylinder head or carburetor to intake manifold connection and in rare instances a worn throttle plate shaft and or seals.
POPPING on deceleration is usually caused by a lean fuel condition or an air leak in the exhaust system and is generally located where black carbon soot is seen as a flashing build up from any joint connection. This condition can easily be remedied by removing and cleaning both joint pieces and reassembling with high temp silicone and torquing the exhaust clamp to the proper spec.
SPITTING is usually caused by a faulty accelerator pump and or nozzle, or the float bowl needle and seat leaking and overflowing through the main jet mixing well nozzle, or the air-fuel mixture screw is adjusted too lean.
BACKFIRING is usually caused by a sticky/tight intake valve or a timing issue, 180 degrees out or cam chain off 1or 2 teeth.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Deceleration exhaust pop backfire
Honda shadow exhaust leak backfiring fix
Honda 1998 VT750C Service Manual
Honda VT750C Owner Manual
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Posted on Jan 06, 2018
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Posted on Jan 02, 2017
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
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