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smimike    0

Turbo went down. Drove the truck a few miles, put new turbo on and changed head gaskets too. Truck has no power. Now what could be wrong? Checked valve clearance again, still no power. Turbo spins up good. Any help?

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mrsmackpaul    1,529

is making much boost and does it blow smoke ??

 

Paul

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smimike    0

did not fine any thing in intake change head gasket had oil leak   change filters  smoke some sound funny when pulling  ?

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mrsmackpaul    1,529

I reckon you have a leak between the turbo and the inlet manifold 
I wonder has something been damaged with a bit of turbo fin ??? or maybe not just put on properly

 

If you are making smoking the turbo wont be making boost 

 

Paul

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mrsmackpaul    1,529

If the turbo was new I would say unlikely 
Everything to me points to a air leak between the turbo and inlet manifold , either something not put back together properly or something damaged 

 

Paul 

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smimike    0
 

If the turbo was new I would say unlikely 
Everything to me points to a air leak between the turbo and inlet manifold , either something not put back together properly or something damaged 

 

Paul 

it was reman

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OTR performance makes a $90  boost dummy for testing. Good to buy and have. We had one at our shop made of a large pipe cap drilled and pipe tapped for a 1/4" air nipple. Put 10psi on it and find your boost leak.

Never see bad turbos from the box, they are too low tech. Unless you bought from some brand X, eBay, china firm. 

Mack also has an awesome universal boost circuit tester made for MP group. I use it on everything, even 13.5 liter John Deere with VGT. Stretch, but it fits. 

For turbo warranty a Mack shop would pull and disassemble every tube from air filter to engine intake and change air filter. Psi wash CMCAC. If turbo through-shaft breaks on failed turbo we pulled the oil pan to make sure shaft frags were not in basement. Drain or remove intake, I never had to pull an intake. I have pulled the exhaust pipes to find the impeller from blow-up. 

In Wisconsin we also hang the CMCAC so residual wash water can not collect and freeze crack the low rib of CMCAC core. 

Good luck.👍 

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2000CL713    3
On 9/10/2017 at 2:13 PM, Mack Technician said:

OTR performance makes a $90  boost dummy for testing. Good to buy and have. We had one at our shop made of a large pipe cap drilled and pipe tapped for a 1/4" air nipple. Put 10psi on it and find your boost leak.

Never see bad turbos from the box, they are too low tech. Unless you bought from some brand X, eBay, china firm. 

Mack also has an awesome universal boost circuit tester made for MP group. I use it on everything, even 13.5 liter John Deere with VGT. Stretch, but it fits. 

For turbo warranty a Mack shop would pull and disassemble every tube from air filter to engine intake and change air filter. Psi wash CMCAC. If turbo through-shaft breaks on failed turbo we pulled the oil pan to make sure shaft frags were not in basement. Drain or remove intake, I never had to pull an intake. I have pulled the exhaust pipes to find the impeller from blow-up. 

In Wisconsin we also hang the CMCAC so residual wash water can not collect and freeze crack the low rib of CMCAC core. 

Good luck.👍 

will the OTR performance boost leak tester work on a 2000 CL713 with E7-427 and do I need to 4 of 5in?? I don't recall the size and id like to order one. 

Edited by 2000CL713

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8 hours ago, 2000CL713 said:

will the OTR performance boost leak tester work on a 2000 CL713 with E7-427 and do I need to 4 of 5in?? I don't recall the size and id like to order one. 

I would not gamble on a guess. Take a measure, sure they have a fit.

Edited by Mack Technician

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