Lean rear cylinder

Jim Stewart js at strappe.com
Fri Oct 2 11:54:08 PDT 2009


Ernest Montague wrote:
> Pilot jet was completely clogged up, which explains the 2000-4000 rpm 
> backfiring, overheating and crappy running.
> 

At least it was an easy and cheap fix.

It's surprising how much the pilot jet affects the mixture off-idle. 
Even at full throttle it amounts to 20% of total fuel flow or thereabouts...

-js


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