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Question: 1980 Ford Falcon XD 351
Cleveland mileage: 146,000. I've got a Ford Falcon -
Australian car but same set up as a F150 or similar
Ford running a 351 Cleveland, mildly worked. The car
has started to ping very badly with even moderate
acceleration. Sparks seem fine, timing is spot on - carburetor could be running better, but it doesn't seem
to be the problem. A few friends believe it is the
distributor. Is there a particular part of the
distributor, which would be causing the majority of
the problem, or something, which I can replace
myself? If not I'll have to get it overhauled, but
that's pricey. Thanks.
Answer: Check the ignition
timing at idle and also at 1000 RPM, 1500 RPM, 2000
RPM and 2500 RPM. Note the timing advance for proper
operation - you should have approximately 20 degrees
advance between idle and 2500 RPM. Also, if your
engine is equipped with an EGR valve, it should be
closed at idle and start to open as the RPM
increases.
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