I just got a 94 Chevy k1500 6.5 turbo diesel. for the most part the truck runs good but the truck started blowing a lot of black smoke and has total loss of power almost like the turbo cuts off. I think its vacuum problem maybe egr any ideas?

 

Loss of power and black smoke is most commonly caused by issues with the vacuum system. The easy test is to try to move the waste gate arm on the turbo with the truck running. This should not be easy to move. If you can, then start checking for vacuum at the pump (>15 inHg) and move down the line until you find the issue.

1. Vacuum pump
2. Vacuum lines
3. Vacuum solenoid
4. Waste gate actuator

Try this out first and let us know how it turns out. If this is not the issue there are a few other things to check out. If your vacuum system is in need of repair you may want to look into switching to a manual boost controller

 

well I in plugged the egr vacuum line and caped the line off the truck ran so much better. I plan to delete the egr. my next problem was I had intermittent turbo spool so I'm gona check the wasegste today

 

how can I make a manual waste gate?

 

Google turbo master

 

help in the right direction 6.5 check engine light on runs rough no power then would fix its self then light on all the time loud engine black smoke no power filter was stoped up and there is vac. at wast gate some of yhe noise sounds like comimg from the turbo

 

your post reads like jibberish-can't tell if you are asking for help or offering it?

 

ive got a 96 k3500 this problem has been slow coming but now everything is constant check engine light on loud engine noise that would stop about a mile r two but stays now black smoke sme way and no power . and the last couple times out it was running hot .i pulled the air filter wow never seen one that bad . i have checked vac.at waste gate it has plenty it doesnt go away under engine rev is that norm. does it gotta be under a load before vac. goes away an the gate opens also im reading that bad injecters sound like a rod knocking . it ideles very smooth can anyone help .

 

under the take driver side unless it has been updated then driver side fender well most of the time

 

You are the worst at this English thing....
Black smoke can be caused by the turbo not supplying enough air or if you have a damaged injector. When the truck is at idle you should see more then 15 inches of vacuum. If you can move the waste gate when the truck is running then you have an issue with the vacuum system.