1990 K1500 TBI 350

[Josh Lorenz]

Truck cranks and runs fine mostly. However sometimes at idle it will start to bog down and puff black smoke and almost stall out. When this happens I can see excessive fuel being sprayed from the injector and sounds like a hiss. Same thing happens while driving at regular speeds too where it will not have any power and bog down stall. It will intermittently “catch its breath” and accelerate but then back to bogging down. Then when I go to crank it again it can take awhile to restart. Seems like the truck is getting too much fuel at times. Any suggestions? Thanks

[Josh Lorenz]

Just now, Josh Lorenz said:

Truck cranks and runs fine mostly. However sometimes at idle it will start to bog down and puff black smoke and almost stall out. When this happens I can see excessive fuel being sprayed from the injector and sounds like a hiss. Same thing happens while driving at regular speeds too where it will not have any power and bog down stall. It will intermittently “catch its breath” and accelerate but then back to bogging down. Then when I go to crank it again it can take awhile to restart. Seems like the truck is getting too much fuel at times, but mostly at idle. Sitting at a traffic light is a scary thing. Any suggestions? Thanks