Idle Air Metering Jet Orientation Solex P 40II

[Greg Greer]

I can only get my # 4 cylinder to idle by slightly backing off the idle metering jet by about 1/6 of a turn counter clockwise. My other idle metering jets are turned in completely and run fine. I have tried switching this jet with other idle metering jets, however, it is the same story. It will only run if the jet is backed off about 1/6 of a turn. I can turn this cylinder on and off just by this slight turn.
My mixture screws are turned consistently out, however #4's mixture screw only has an effect when the idle metering jet is backed off the slight 1/6 of a turn. I have cleaned this circuit with carburetor cleaner and my idle air bleed is clear. I cannot detect any air leaks or ignition issues. I have good compression and spark. The engine runs fine off idle range. The questionable JET IS #9 in the first pic and Letter g in the second pic. Any advisement appreciated.

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Greg, I would ask someone on the 356 registry, they could answer immediately

http://forum.porsche356registry.org/viewforum.php?f=1&sid=16f265691ec1f3691be0b195ae5b4276

[old DKP driver]

Hello,
First off isn’t your carburetor picture of a 40 P11 carburetor?
The jet is called an idle jet and it’s probably clogged
Isn’t your engine a 4 cylinder? 356. Or 912
Chris
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V.W.owner since 1967