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Gasoline Fouled Plugs 900 1994

posted by  Townshend Act on  Wed Nov 3 01:35 CST 2021
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last visit: Tue Oct 7 22:44 CST 2014
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All four NGK BPR6ES spark plugs in my B230FT are completely blackened and soaked with gasoline. Obviously a rich fuel mixture, right?
Cylinder compression and leak down testing shows engine mechanical is sound.
Full engine rebuild completed one year ago.
My mileage is around 14-15 MPG. Performance is very good. Cold start-up is immediate, but idle is poor until plugs and cylinders are cleared of apparent excessive fuel.
The fuel injectors are firing (per noid tester), and their o-rings are new.
The Secondary ignition is also firing correctly. The rotor, cap and wires have all been replaced with Volvo OEM.
FPR replaced a short time ago, which also did not improve the situation.
You may assume the fuel system is completely clean and without any debris.
What am I missing folks? Gotta be something obvious, I’m sure.





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New Gasoline Fouled Plugs [900][1994]
posted by  Townshend Act subscriber  on Wed Nov 3 01:35 CST 2021 >


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