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Purdy Swoft · 11-11-2014, 11:01 PM

Any exhaust leak will cause popping at gear shifts and when letting off the gas but won't cause over heating. Retarded timing or over retarding the spark lever when driving will cause over heating and even more popping when decellerating. First check points gap. as the rubbing block on the points wear the points gap closes. When the points gap decreases the timing becomes more and more retarded. Factory specs for points gap is anywhere from .018 to .022. I usually like to run the wider points gap, this gives more time before the points will need to be readjusted. I usually run with full advance at speed but you have to be carefull not to strain and lug the engine with a lot of advance in high gear. In other words, keep your momentum built up for hills and don't strain the engine. Retarded spark and timing is a major cause of overheating and loss of pep and power.

11-11-2014, 11:01 PM	#7
Purdy Swoft Senior Member Join Date: May 2010 Location: Alabama Posts: 8,099	Re: running hot Any exhaust leak will cause popping at gear shifts and when letting off the gas but won't cause over heating. Retarded timing or over retarding the spark lever when driving will cause over heating and even more popping when decellerating. First check points gap. as the rubbing block on the points wear the points gap closes. When the points gap decreases the timing becomes more and more retarded. Factory specs for points gap is anywhere from .018 to .022. I usually like to run the wider points gap, this gives more time before the points will need to be readjusted. I usually run with full advance at speed but you have to be carefull not to strain and lug the engine with a lot of advance in high gear. In other words, keep your momentum built up for hills and don't strain the engine. Retarded spark and timing is a major cause of overheating and loss of pep and power.