Quote:
Originally Posted by trac209
Every issue you've described has been addressed,wires are new and not arcing out,egr is blocked off with plate has been for years. A vacuum leak is not the issue here. Carb sprayed at idle and not leaks are detected anywhere including throttle shafts,vac leaks don't just come and go. Distributor was all cleaned and that as well. Ive done everything you'd look for at first that's why this is so perplexing. Checked the power piston as well and it's working but doesn't mean it can't stick. This is the only thing I can think of that has these exact same running symptoms that can come and go. I'll check distributor again though
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The air door for the 2nd flapping in the breeze will do this.. failing diaphragm or busted spring..
Sticking advance weights,,
a die'n coil intermittent short
heat stove air housing door flapping in the breeze
exhaust block off door to heat the heat stove when cold if at exit of exhaust manifold.. and flapping in the breeze..
cyl can't suck in fuel/air mix if the exhaust is blocked..
Thinking you got all the carbon out of the housing.
New wires don't mean not faulty ,
sunk or sinking float allowing fuel to push out the vent.. once the fuel pump catches up..
loose batt power connection at the distributor connector ..
tach wire short intermittent short
Sticking pcv valve
The fun of an issue that comes and goes..