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1965 Other Ford Models Miss firing

Tiny
FRITO15
  • MEMBER
  • 1965 FORD
  • V8
  • 2WD
  • AUTOMATIC
  • 7,000 MILES
I have a 289 and when it is cool it runs great. However, it seems that when the thermostat opens at 180 degrees, the car begins to run very rough. When accelerating the it is a bit better than holding at a constant speed. I can see the RPM gauge jumping up and down quite a bit. I have popped off the plug wires from the distributor while running hot and the 7 and 8 cylinders fire infrequently. I can move the 5 or 6 plug wire to the 7 and 8 spot on the distributor and they fire just fine. I have put in new plugs, plug wires, and a new coil.

I don't think it is a head gasket, cause I don't have white smoke, antifreeze in the oil, or oil in the coolant.

I am at a loss.

Thanks,

Chance
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Sunday, August 3rd, 2008 AT 6:19 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Test the plugs wires resistances and look for crossfire/inspect distributor cap
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Sunday, August 3rd, 2008 AT 6:25 PM
Tiny
FRITO15
  • MEMBER
  • 2 POSTS
I have a new dist. Cap. How can I check the resistance on the wires?
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Sunday, August 3rd, 2008 AT 6:43 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Your best bet is just replace the wiring set. You need a DVOM to test the resistance of the wire, anything over 30K ohms I consider it bad-
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Sunday, August 3rd, 2008 AT 7:28 PM

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