Hi folks, here is my problem:
I have a 1974 SIII which was refitted with a Weber 34ICH conversion back in 1990 when the engine was rebuilt. Since that time it has gone about 5000 miles. During most of that time it frequently dieseled when shut down, but otherwise always ran perfectly, never overheated, and always had good power and driveability. I never made any adjustments to the carb or attempted to re-jet it. I had assumed the dieseling was because of a somewhat lean mixture but never looked into it and of course my assumption could be wrong. Recently I smelled coolant in the exhaust and concluded that the head gasket has failed. It still runs well. Anyone have any thoughts on whether the head gasket has failed or not, and if so could the head gasket failure be related to the long-term lean running? If not then what could have caused the head gasket to fail at such low mileage? Further, does this carburetor need to be re-jetted or adjusted and if so what should I do?
Thanks for any comments.
Charles Schneider
Raynham MA
I have a 1974 SIII which was refitted with a Weber 34ICH conversion back in 1990 when the engine was rebuilt. Since that time it has gone about 5000 miles. During most of that time it frequently dieseled when shut down, but otherwise always ran perfectly, never overheated, and always had good power and driveability. I never made any adjustments to the carb or attempted to re-jet it. I had assumed the dieseling was because of a somewhat lean mixture but never looked into it and of course my assumption could be wrong. Recently I smelled coolant in the exhaust and concluded that the head gasket has failed. It still runs well. Anyone have any thoughts on whether the head gasket has failed or not, and if so could the head gasket failure be related to the long-term lean running? If not then what could have caused the head gasket to fail at such low mileage? Further, does this carburetor need to be re-jetted or adjusted and if so what should I do?
Thanks for any comments.
Charles Schneider
Raynham MA
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