Fighting this issue for quite awhile. Bought car 2 years ago, 1970 Challenger SE, originally 383 2bbl single exhaust, at some point before I purchased converted to 4bbl, unknown cam and headers. Did all the basics over and over, plug wires, plugs(twice), cap, rotor, coil, ballast resistor, voltage regulator, new carb. Randomly the car will run great and then next time I start it runs bad. #8 is always colder and sometimes dead cold. I am using a temp gun on the header pipe. The other day #1 was dead cold after running 20 mins. I have not changed the distributor yet but I have one to try. Any thoughts on why it would randomly have dead cylinders? Plugs don't show signs of fouling. I have not changed points. Thank you.
#8 cylinder always colder and dead cylinders!
- Thread starter Lanman70
- Start date
no heat = misfiring plugs should be wet with gas the reason for the misfire ? could be bad plug 'bad wire ;'bad dist cap ;even could be to lean fuel mixture ;or vacuum leak.. i would start with plugs wires new dist cap . i diched the points went to pertronics ignition world of difference
I;ll never go back
I;ll never go back
Bret Schneider
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Probably noteworthy that the two problem cylinders, #1 and #8, are adjacent in the firing order and on opposite sides of the engine. Intermittent issues that move from cylinder to cylinder almost have to be ignition related.
There aren't many things that could go wrong in a points ignition that would cause a problem like you're describing.
Could there be a problem with the distributor cam? Maybe the #1 and/or #8 lobes flattening out a little?
I'd pop in the other distributor and see what happens.
There aren't many things that could go wrong in a points ignition that would cause a problem like you're describing.
Could there be a problem with the distributor cam? Maybe the #1 and/or #8 lobes flattening out a little?
I'd pop in the other distributor and see what happens.
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