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Forum: Full Size K5 (1969-1991) GMT415 (1992-1994) Tech

11-14-2013, 07:04 AM

Replies: 13

tbi issues....1990 5.7

Views: 3,754

Posted By BigBobsk5Blazer

You are right. They didn't start doing the...

You are right. They didn't start doing the cam/crank thing until the Vortec setup I believe 1996+.

The first generation had HEI then went to ICM module with external coil. The ICM module was...

Forum: Full Size K5 (1969-1991) GMT415 (1992-1994) Tech

11-13-2013, 06:29 AM

Replies: 13

tbi issues....1990 5.7

Views: 3,754

Posted By BigBobsk5Blazer

Good for you. I have had distributors go bad but...

Good for you. I have had distributors go bad but usually no spark.

Forum: Full Size K5 (1969-1991) GMT415 (1992-1994) Tech

11-11-2013, 06:51 PM

Replies: 13

tbi issues....1990 5.7

Views: 3,754

Posted By BigBobsk5Blazer

Check your pressure regulator. If the diaphragm...

Check your pressure regulator. If the diaphragm is ripped or the spring is broke you will not get fuel. Check for debris in your fuel line at the TBI supply/return lines.

Forum: Full Size K5 (1969-1991) GMT415 (1992-1994) Tech

11-11-2013, 06:48 PM

Replies: 13

tbi issues....1990 5.7

Views: 3,754

Posted By BigBobsk5Blazer

Using stock TBI base vs. bored unite

I tried a bored TBI unit on my K5 with 355 engine. I have a costume chip burned for my engine combination and the chip came with a high volume pump and high pressure spring for the pressure...

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