TBI wet at regulator.

[jhenson90]

First post in the forum for me! Just joined today.

I have been battling a fuel leak for the past few weeks. Only able to work on it on Sundays due to my work schedule. I have rebuilt the tbi unit and just today replaced the fuel pressure regulator. I ran it for about 5-7 mins in the driveway and checked for any leaks. I didn't see any so I drove about 5 miles or so up the road and back. Came back and there's fuel around the base of the regulator. Any suggestions?

Truck is a 1991 K1500 5.7.

 

[90halfton]

Welcome. Gonna be a tough problem for someone to fix on the internet.

 

[Dylan1991_1500]

Could you have put the regulator gasket on incorrectly when you rebuilt the tbi?

 

[jhenson90]

Could you have put the regulator gasket on incorrectly when you rebuilt the tbi?

I don't believe so. I'm OCD when it comes to these things. I have everything laid out before I put it back together. Lol

 

[sntrym]

When you pulled it apart, did you replace the fuel meter body gasket? Number 24 in this image. http://chevythunder.com/tbi_parts.jpg

 

[jhenson90]

When you pulled it apart, did you replace the fuel meter body gasket? Number 24 in this image. http://chevythunder.com/tbi_parts.jpg

Yes, it has a new one on it

 

[sntrym]

Yes, it has a new one on it

Ok good. When you put the regulator spring back in, you used the two guide pins and tightened each side equal turns on the way down?

 

[jhenson90]

Ok good. When you put the regulator spring back in, you used the two guide pins and tightened each side equal turns on the way down?

I did. Got two diagonal fron each other snug then tightened them and matched the other two diagonal from each other.

 

[sntrym]

Ok good. When I replaced my regulator spring, I spent a lot of time with a Dremel cleaning up the mating surfaces for all the gaskets. That's that's the only other thing I can think of - that there's a piece of old gasket in there somewhere, or a screw is coming loose once the engine heats up. You may have to take it apart again and take a look around.

 

[jhenson90]

Ok good. When I replaced my regulator spring, I spent a lot of time with a Dremel cleaning up the mating surfaces for all the gaskets. That's that's the only other thing I can think of - that there's a piece of old gasket in there somewhere, or a screw is coming loose once the engine heats up. You may have to take it apart again and take a look around.

That's what I was thinking. It couldn't hurt to pull it again and check it out.