smimike Posted September 8, 2017 Share Posted September 8, 2017 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? Quote Link to comment Share on other sites More sharing options...
Popular Post Lmackattack Posted September 8, 2017 Popular Post Share Posted September 8, 2017 Did the turbo blades come apart on the old turbo when it failed? If it did you should have inspected the intake system near the air filter for metal. I have seen twice now a turbo that self destructed and the mechanic did not check to see if metal made it into the air filter housing. They slap a new turbo on and it slowly sucks in metal from the old turbo that failed and wrecks the new turbo. 3 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted September 8, 2017 Share Posted September 8, 2017 Why head gasket? Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted September 8, 2017 Share Posted September 8, 2017 is making much boost and does it blow smoke ?? Paul Quote Link to comment Share on other sites More sharing options...
Freightrain Posted September 8, 2017 Share Posted September 8, 2017 Fuel pressure? Just a coincidence filter got plugged up? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment Share on other sites More sharing options...
smimike Posted September 8, 2017 Author Share Posted September 8, 2017 did not fine any thing in intake change head gasket had oil leak change filters smoke some sound funny when pulling ? Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted September 9, 2017 Share Posted September 9, 2017 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 Quote Link to comment Share on other sites More sharing options...
mrgumby Posted September 9, 2017 Share Posted September 9, 2017 did you check the charge air cooler for metal ? Quote Link to comment Share on other sites More sharing options...
smimike Posted September 9, 2017 Author Share Posted September 9, 2017 dont have a boost gauge could of got a bad turbo what you think?? Quote Link to comment Share on other sites More sharing options...
mrsmackpaul Posted September 9, 2017 Share Posted September 9, 2017 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 Quote Link to comment Share on other sites More sharing options...
theakerstwo Posted September 9, 2017 Share Posted September 9, 2017 Some one has done ask but i will ask, why head gaskets? Quote glenn akers Link to comment Share on other sites More sharing options...
smimike Posted September 10, 2017 Author Share Posted September 10, 2017 Some one has done ask but i will ask, why head gaskets? had oil leak Quote Link to comment Share on other sites More sharing options...
smimike Posted September 10, 2017 Author Share Posted September 10, 2017 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 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted September 10, 2017 Share Posted September 10, 2017 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.👍 1 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted September 11, 2017 Share Posted September 11, 2017 Mack part number 88800186 1 Quote Link to comment Share on other sites More sharing options...
smimike Posted October 13, 2017 Author Share Posted October 13, 2017 put in new inject in runs good now Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted October 13, 2017 Share Posted October 13, 2017 Quote Link to comment Share on other sites More sharing options...
2000CL713 Posted October 13, 2017 Share Posted October 13, 2017 (edited) 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 October 13, 2017 by 2000CL713 Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted October 13, 2017 Share Posted October 13, 2017 (edited) 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 October 13, 2017 by Mack Technician Quote Link to comment Share on other sites More sharing options...
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