Engine Stumbles

[k5freak44]

Im starting to get frusturated with my K5 because it isint running the way it should.

Its a 91 with a 350 and TBI, and when its cold it stumbles and tires to die until its somewhat warm. When i go to give it some gas and its in drive it jerks like its dyeing and then slowly accelerates. If i put the pedal to the floor in drive it makes alot of noise and accelerates to 40mph in about 15 seconds. Another thing that it does mostly when its cold but sometimes when its warm, is when i put it in gear thengine stumbles, most of the time dies unless i give it some gas.


What is yalls take on this?

I rebuilt the Throttle body and cleaned the injectors, helped but didnt do much, and i replaced the idle regulation sensor or whatever it is called that screws into the back of the throttle body.

Thanks

Jonathan

 

[AZ79K5Project]

Have you checked the timing? Vacuume leak?

 

[k5freak44]

when the engine is warm it idles just fine tho and only bogs down when i try to accelerate.

would the timing do that?

i checked for vaccum leaks and couldent find any


anone else?

 

[1985_K5_Silverado]

Is it tossing out any fault codes? I usually forget to mention that (since mine's a non-OBD-type dinosaur).

 

[AZ79K5Project]

Timing can cause poor/hesitation on accleration.