Need help cucv

[choll]

Broke down today on my way from nevada to washington state.
I had an extreme loss of power 25mph max, black and blue smoke. Here is what I have done: changed fuel pump, changed CDR valve changed fuel filter. Starts right up every time just no power. This blazer has never smoked.
Hoping it is just the injectors. They are getting checked tomorrow.

Anyone have any ideas.

Chuck

 

[85-m1028]

there's a rocker type pluger on the side of the injection pump, depress that and it should change the idle and make it run a little rough. check the rubber fuel return line coming from the top of the injection pump, I put a clear piece of tubing in its place to check for air bubbles.

it may be partialy clogged and wreaking havoc on your pump timing. sounds to me like a timing issue..

 

[choll]

It turned out to be a bad IP

 

[CCATLETT1984]

expensive, but at least you found the cause. How many miles were on your truck?

 

[choll]

91,000. I cant complain that is the only time in the 8 years that I owned it that something broke.