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Starts and dies a few times then runs at rough idle then normal

Tiny
BRIAN24
  • MEMBER
  • 1990 FORD MUSTANG
  • 5.0L
  • V8
  • RWD
  • MANUAL
  • 134,000 MILES
So after replacing my intake gaskets it has been having trouble staying running after a cold start, but after a few times of cranking it over it will rough idle for a while then kind of smooths out. After the engine gets warm it has no trouble starting and running at normal rpm. Any thoughts or solutions?
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Tuesday, January 17th, 2017 AT 6:11 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hey BRIAN24,

It sound like you have a vacuum leak, here is a guide on how to find where the problem is.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Let me know what you find.

Best, Ken

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Sunday, January 22nd, 2017 AT 2:40 AM

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