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My 87 k-5 Blazer stalls and backfires on take-off but runs good when you get up to about 20 miles an hour

Tiny
TTLYCNFSD
  • MEMBER
  • 1987 CHEVROLET BLAZER
  • 155,000 MILES
Changed fuel injectors, plugs, wires, dist. Cap, rotor, please help!
Wednesday, November 23rd, 2011 AT 1:09 AM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Check for vacuum leaks around the intake. Make sure fuel pressure is within spec and the regulator is working properly. A common problem was the intake gasket. So check that closely. Expecially around the rear of it.
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Wednesday, November 23rd, 2011 AT 1:20 AM
Tiny
TTLYCNFSD
  • MEMBER
  • 4 POSTS
Thnx alot! Will try that tomorrow. You guys are great will recommend to my friends
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Wednesday, November 23rd, 2011 AT 1:44 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
I just hope that I helped. Let me know and have a good Thanksgiving.

Joe
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Wednesday, November 23rd, 2011 AT 3:49 AM
Tiny
TTLYCNFSD
  • MEMBER
  • 4 POSTS
Did you mean the intake gasket wher it bolts to the block or where the carb bolts to the intake? And what would the fuel pressure spec be for that? Thnx again!
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Saturday, November 26th, 2011 AT 2:43 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
9 to 13 psi and check both areas for leaks
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Saturday, November 26th, 2011 AT 3:08 AM
Tiny
TTLYCNFSD
  • MEMBER
  • 4 POSTS
Checked everything you said. No luck. Could it be an o2 sensor? Or throtle control sensor? This thing is workin my brain! Lol!
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Sunday, November 27th, 2011 AT 2:40 AM

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