This weekend it only runned on three cylinders between idle and 6000 rpm. Over 6000 rpm on all four. Tought it was a spark plug, coil or a dirty low speed jet. Changed the plugs and checked if the coils made sparks between the coils and the spark plug holes, which every one did! Thought for a minute that was the problem but since it was on all cylinders I decided to go forward and clean the jets. When I took of the carburetors I noticed that one of the throttles was wide open. The reason was that the needle was bent and didn´t slide down in to the jet.... Has anyone experienced this before or...?
HURRICANE
TY 4 Stroke God
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I have never had this happen to me but the stop for the needle is in the cap. Maybe swap the cap and diaphram to anouther carb and see if the problem goes with it.Also,I offer a turbo spring for those needles if you are getting a low to mid bog.The spring solves the bog
mmax700
Extreme
didnt mcx changed the caps to billet??
TBird
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Nope!mmax700 said:
TT
TY 4 Stroke Master
Could it be part of the glue, from installing the MCX carb rings, that came loose and hit the needle?
First time I changed the needle and the stop, happened again in the same carb. Has been thinking more about this. I also found some small amount of water (didn´t taste like fuel anyway...
) in the IC and it was carb #1 both times. Could it be water coming in via intake, accumulates, get frozen when it´s cold, come loose and go straight in to carb #1 and smashes the needle....? Then the fix should be to separate intake/exhaust at the turbo with a sheet metal. Opinons?
rxrider
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If you do not have the separator plate in between the exhaust turbine housing and the air filter get hold of it and install immediately. The plate work wonders keeping humidity from getting into the filter.
