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86 930 Running lean
Hello all, I'm working through some issues with a US spec 86 930. The car is stock, and has been runing great. While cruising down the highway, it began to run rough below 3k RPM, over about 3200 it ran fine at light load.
The car will barely idle, and backfires with throttle application.
With slight pressure on the metering plate to richen the mixture, the car smooths out at idle and runs great.
CIS pressures are below:
Temp: 12C
System pressure: 6.8 Bar
Cold control: 2.0 Bar
Warm control: 3.9 Bar
Checked for vacuum leaks both with propane and pressurizing the intake, nothing found.
Could this be a fuel distributor issue? Everything else appears to be checking out just fine, but obviously I'm missing something!
Thanks!
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