Comments on: Project: TBI Fuel Injection – Fixed

By: Ken

Ken — Wed, 07 Dec 2011 14:19:21 +0000

Hi Guy’s
94 GMC Yukon 383 roller motor forged 4L60E Trans… Trick Flow Twisted Wedge Heads $12 G’s Plus…in motor Motorvation convertion kit for GM TBI 2 barrel to a 4 TBI 750cfm…Four 75Lbs injectors… would not work… added a AEM Ser. II computer controller and coil on plug out of LS motor IAC will not work at all… and still running snotty
100PSI pump intank and 4×4 low lock will not shift
any HELP on this would be great…. Thank you in Adv. Ken

By: gene

gene — Sun, 17 Jul 2011 13:33:44 +0000

I have a 1988 5.7 tbi system. I have always worked with the older stuff. Can’t seem to get it to idle, replaced the idle air control valve, it stays running now but oscillates.

By: AJ E

AJ E — Wed, 03 Feb 2010 17:16:01 +0000

I had the same problem on my TBI system I have on my 1973 Blazer I fixed it by installing new return line tubing and hoses the old lines would randomly plug up so I figured it would be best to run new ones

By: Big D

Big D — Tue, 27 Jan 2009 02:21:45 +0000

Thanks for the info! I have been working on a 1972 chev pickup 4×4 resto. I Took out the “big block carburated motor”, and replaced it with a 5.7 TBI injected motor. I have been struggling
with smoothing out the engine . It has always run rich and very erratic . I never got a check engine light,and everything checked out OK . I never thought to check out the fuel return line for resistance. I cleared the line & bingo ,shes 100%- thank you