engine keeps cutting out! help!

Post by **benno** » Tue Jul 17, 2007 9:28 pm

I have just put a pancake style air filter on to the standard 1098 carb and the engine runs fine...on dry days. If there is even a hint of damp in the air the engine is lumpy and cuts out at low revs. I didn't have this problem with the standard air box on so whats changed. Any advice?

Post by **simmitc** » Tue Jul 17, 2007 9:57 pm

Put the standard filter & box back on !

Post by **bmcecosse** » Tue Jul 17, 2007 10:21 pm

So - lift the idle speed slightly - and tune in the ignition advance and the mixture with the new filter in place.

Post by **Willie** » Tue Jul 17, 2007 10:22 pm

I second that, put the original back, a pancake filter is not very efficient
airflow wise but has probably ruined your mixture too.

Post by **Stig** » Wed Jul 18, 2007 8:05 am

Sorry, but if it's weakened the mixture that means it's flowing more air and is more efficient. Of course it's possible that it's restricting the air more than the standard filter, not all after-market goodies actually improve on the originals (particularly heavy wire mesh filters)!

You'll miss the warm air intake in winter too when the carb ices up one cold & misty morning.

Post by **Kevin** » Wed Jul 18, 2007 5:03 pm

that means it's flowing more air and is more efficient.

Not always the case as it may not be filtering the air enough to stop particles getting into the engine.

Post by **bmcecosse** » Wed Jul 18, 2007 9:55 pm

At idle speed ANY filter passes more than enough air - it makes no difference except at high airflow conditions - ie full throttle & high revs.