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1972 Ford Thunderbird Engine back fireing & stalling

Tiny
MARVIN WELSHER
  • MEMBER
  • 1972 FORD THUNDERBIRD
  • V8
  • 2WD
  • AUTOMATIC
  • 78,000 MILES
My car has a 460 engine and everytime I put the vacuum advance hose on it backfires and stalls out. I have put new timing chain and new distributor, new coil and msd, plugs and wires. I have never had this happen. When you leve the vacuum hose off, the car will run but sounds like it is missing.
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Wednesday, June 17th, 2009 AT 3:36 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Is it backfiring through the intake or exhaust? Also, when you set the timing, did you have the vacuum advanced disconnected and plugged? Have you checked for other vacuum leaks? Finally, (no knowing the vehicle) have you checked compression?
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Friday, June 26th, 2009 AT 10:03 PM

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