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1979 Ford Bronco Engine will not go over 2500 RPMs

Tiny
MJHEAD13
  • MEMBER
  • 1979 FORD BRONCO
  • V8
  • 4WD
  • MANUAL
  • 80,000 MILES
It has a 351m, it has ran perfect then all of a sudden it would not go over 2500 rpms, if I try to push it any harder it backfires, it starts fine idles fine and anything under 2500 rpms you would not know any thing was wrong with it got any thing to try.
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Monday, March 16th, 2009 AT 2:55 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Try a new distributor vacuum advance.
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Monday, March 16th, 2009 AT 2:59 PM
Tiny
MJHEAD13
  • MEMBER
  • 2 POSTS
Is ther a way to tell if the vacuum advance is bad
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Monday, March 16th, 2009 AT 5:14 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Use a vacuum pump apply vac, if it leaks or does not pump up, its no good, also remove the distributor cap, and see if the plate moves, it could be frozen in place.
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Tuesday, March 17th, 2009 AT 1:15 PM

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