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1994 Ford Truck exhaust valves

Tiny
JOEVICKHOO
  • MEMBER
  • 1994 FORD TRUCK
  • 2.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 205,000 MILES
Twice vie' had an exhaust valve burnt in a pie shape fashion on this engine. I was wondering if it was caused by too much back pressure as in a stoped up catalitic coverter or not not enough back pressure as it running a strait pipe ex hast, or is more lickly that itis caused by runnig high test, (high octalin)) fuel?
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Friday, November 28th, 2014 AT 10:00 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It could be caused by a few things, a vacuum leak making cylinder lean, valve not adjusted correctly, timing off or a bad injector. All of that would need to be checked first.
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Friday, November 28th, 2014 AT 12:01 PM

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