**FIXED!!**DEFINITELY***Super HIGH idle after multiple parts replacement - TBI 1990 K1500 350engine

[dyeager535]

Would love to find one of those washers...wouldn't mind 13psi

You can use anything you want in there, you are just using it to increase spring tension.

Sometimes the TBI pumps aren't capable of generating that pressure no matter how much spring tension there is.

Have to be careful not to over-shim it, or you'll coil bind and crack the casting. One guess how I know. Lol

 

[ZombieK5]

I'm calling this fixed. I was able to take it out on the road and it seems to drive just fine. It is definitely an old engine but it still starts and runs. No more hesitation and no more surging. The engine starts in the first key crank and doesn't stall. I still can't believe it all came down to one bad feel injector that was brand new and original General Motors equipment.

 

[folkenheath]

I took it a for a spin and it ran like sh*t. Crawled back under the hood and did some more digging around. I happened, by just pure luck, to look at the driver side fuel injector and there was gasoline pooling on the top of it. Upon closer examination I saw that about every two or three seconds and additional drop of gas fell into the throttle body port on the driver side....

I'm calling this fixed. I was able to take it out on the road and it seems to drive just fine. It is definitely an old engine but it still starts and runs. No more hesitation and no more surging. The engine starts in the first key crank and doesn't stall. I still can't believe it all came down to one bad feel injector that was brand new and original General Motors equipment.

I don't think it was pure luck, it was not giving up and continuing to look when you already checked everything. Good job fixing it!