No Boost Need Help!!!

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Candclebleu

New member
i took my sy out for a ride got on it a lil bit and it started running bad. So i opened the hood and noticed the vacuum line on the top front of the turbo was off (broke) and now it doesn't make any boost or vacuum. The truck is all stock except for k&n filter. Need help on what to do or check. Thanks
 
TNPhoon

TNPhoon

1of28
Re: No Boost Need Help!!!

Candclebleu said:
So i opened the hood and noticed the vacuum line on the top front of the turbo was off (broke) and now it doesn't make any boost or vacuum. The truck is all stock except for k&n filter. Need help on what to do or check. Thanks
Click to expand...

Replace that line? :dunno:
 
TNPhoon

TNPhoon

1of28
Re: No Boost Need Help!!!

How did you fix it? Do you have the stock vac lines running to it or an aftermarket Sportmachines silicone kit?
 
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Candclebleu

New member
Re: No Boost Need Help!!!

stock lines, i cut the bad part and put it back on to see if that fixed the problem which it didn't
 
TNPhoon

TNPhoon

1of28
Re: No Boost Need Help!!!

Candclebleu said:
stock lines, i cut the bad part and put it back on to see if that fixed the problem which it didn't
Click to expand...

Check those lines very carefully. They are over 20 years old now. They crack. They crumble. They fall apart.
Odds are, if it broke there, than there's going to be some more damage along that line.
My :2cents:, get the silicone vac kit from Sportmachines and replace all of those lines. When I was taking mine off and swapping them, they looked okay visually, but once I started taking them off, they were literally crumbling in my hands.
Going to silicone is probably one of the top 5 reliability mods that you can do.
HTH.
 
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Candclebleu

New member
Re: No Boost Need Help!!!

i just thought it was strange that i don't have any boost zero after the line came off and i put it back on
 
5678TA

5678TA

New member
Re: No Boost Need Help!!!

clogged catalytic converter? boost leak? try tighten the four hose clamps from turbo to throttle body. also, check the turbo impeller. possible that pieces of the plastic crossover chewed up the blades. if all that checks out, last option would be exhaust wheel in the turbo.

btw, with the vacuum lines on the turbo broken, you should be making too much boost. those lines keep the boost under control via the wastegate.
 
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Syclone22

Member
Re: No Boost Need Help!!!

It is possible that the vacuum line that came off
at the front of the turbo caused a boost spike
and damaged the turbo impeller or shaft just lose
turbo inlet hose and check if the impeller is in good
condition also check if actuator is not leaking vacuum ..!!
 
dgoodhue

dgoodhue

BuSTeD 4.3
Re: No Boost Need Help!!!

Did you have the IC hose off? Check those. If you have one vacuum line broken, replace them all. The rear lines and boost control lines are very important and can cause major engine damage if leaking.
 
jeepruby04

jeepruby04

New member
Re: No Boost Need Help!!!

In your first post you said it doesn't make any boost OR vacuum? I'm assuming you mean the stock boost gauge in the cluster is stationary in the middle, if this is the case, you need to check the vacuum line going to the map sensor. My :2cents:, get the silicone vac kit from Sportmachines.
 
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Candclebleu

New member
Re: No Boost Need Help!!!

Yes factory boost gauge and the truck is running like crap, I'm ordering that vac line kit tomorrow from Sportmachines
 
Throws

Throws

Active member
You can also pick up some regular 4mm and 6mm vac hose. That's what I did.

-P

Sent from my mwp6985 using Board Express
 
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Candclebleu

New member
Re: No Boost Need Help!!!

Just want to thank everyone for their advice and input. I bought a vac line kit from Sportmachines and when changinging the line to the map sensor I found a slice in it. Change all lines and truck is running great again. Thanks for the help, Cody
 
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