View Full Version : 400EX backfires on acceleration
PINKSTEEL
05-31-2010, 09:19 PM
My 400ex was running fine then starting backfiring on acceleration and now it has very weak to no spark.
Please help. Think it might be the stator.
PaRedneckRiders
06-01-2010, 04:41 AM
Well usally backfiring on acceleration is because its running to rich
Then no spark that vould b a completly different problem if u wanted to replace the stator u could then if its still backfiring on acceleration but has good spark its running to rich and u should adjust a/f screw and prob jets
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