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1989 Chevrolet Blazer throttle body injection

Tiny
70CJ
  • MEMBER
  • 1989 CHEVROLET BLAZER
  • 120,000 MILES
I recently did a body swap on a k5 replacing the blazer body with a 1970 cj5 I cut 4ft off the rear of the frame and installed a new fuel tank and ran new lines filter, everything. The CPU is hooked up and I used wiring diagrams to wire the ignition system. Now the fuel is making a round trip back to the tank and the engin still wont crank over. Ive already cleaned the injectors.
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Monday, September 2nd, 2013 AT 12:44 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,708 POSTS
If the fuel is running directly back to the fuel tank, it sounds like the regulator is bad. Have you checked that?
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Monday, September 2nd, 2013 AT 6:30 PM
Tiny
70CJ
  • MEMBER
  • 2 POSTS
It doesn't use a fuel regulator my best guess is that I might have to clean the tbi it ran when the project began about 3 months ago
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Monday, September 2nd, 2013 AT 10:05 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,708 POSTS
How are you regulating fuel pressure? If the fuel is running back to the tank, there will be little to no fuel pressure at the rail.
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Tuesday, September 3rd, 2013 AT 6:17 PM

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