JSmackchu613 Posted February 13, 2023 Share Posted February 13, 2023 Its a 2014 mack chu613 with mp8. I just got new turbo and now truck blows black smoke when up shifting and speeding up. Its fine under normal driving. Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/ Share on other sites More sharing options...
mrsmackpaul Posted February 13, 2023 Share Posted February 13, 2023 Boost leak, wrong turbo, air restriction? Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525289 Share on other sites More sharing options...
Joey Mack Posted February 13, 2023 Share Posted February 13, 2023 Do you hear a loud squealing sound when you are pulling hard? Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525290 Share on other sites More sharing options...
JSmackchu613 Posted February 13, 2023 Author Share Posted February 13, 2023 You know the sound when air leaks thru a small pin hole. I can hear that sound. But i cant figure out where its coming from all my pipes and clamps are new. Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525293 Share on other sites More sharing options...
Joey Mack Posted February 13, 2023 Share Posted February 13, 2023 Yes I do.. The O-ring at the elbow mounted to the turbo volute, is notorious for leaking, and even a new one can get cut during assembly.. Jojo 2 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525294 Share on other sites More sharing options...
MACKS Posted February 13, 2023 Share Posted February 13, 2023 With the truck at idle spray some starting fluid on your charge air connections and hoses and pipes.. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525296 Share on other sites More sharing options...
fjh Posted February 14, 2023 Share Posted February 14, 2023 I don’t think we should be seeing any smoke is it deleted? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525315 Share on other sites More sharing options...
Onyx610 Posted February 14, 2023 Share Posted February 14, 2023 5 minutes ago, fjh said: I don’t think we should be seeing any smoke is it deleted? That’s what I was thinking. Unless dpf is cracked. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525316 Share on other sites More sharing options...
fjh Posted February 14, 2023 Share Posted February 14, 2023 42 minutes ago, Onyx610 said: That’s what I was thinking. Unless dpf is cracked. Yup I read this post awhile back and wondered about it thought I’d wait and see if there was more to the story but now I had to ask! Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525318 Share on other sites More sharing options...
mechohaulic Posted February 14, 2023 Share Posted February 14, 2023 starting fluid ;; old school , didn't think that technic was allowed or used anymore. very light on the spray also. have to be cautious suggesting that type of test in todays world. too much or spray hitting hot exhaust will change purpose of test and fire extinguish test will take place. or inventory check on first aid kit. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525326 Share on other sites More sharing options...
MACKS Posted February 14, 2023 Share Posted February 14, 2023 6 hours ago, mechohaulic said: starting fluid ;; old school , didn't think that technic was allowed or used anymore. very light on the spray also. have to be cautious suggesting that type of test in todays world. too much or spray hitting hot exhaust will change purpose of test and fire extinguish test will take place. or inventory check on first aid kit. Well that’s me,old school..😏 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525343 Share on other sites More sharing options...
70mackMB Posted February 14, 2023 Share Posted February 14, 2023 There is no school like 'ol school!! .....Hippy Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525349 Share on other sites More sharing options...
Joey Mack Posted February 14, 2023 Share Posted February 14, 2023 Amen My Brotha' !! Unfortunatly what we know how to do, has been challenged by the fancy pants B.S. in recent years. as far as Mack go's... Volvo bought it to destroy it....... have you had the chance to train a new school guy on truck repair, or even driving one, in the last 10 years? I have..... It aint pretty, unless the guy Truly want's to learn... Just sayin'.. Jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525350 Share on other sites More sharing options...
fjh Posted February 15, 2023 Share Posted February 15, 2023 Yup Joe you nailed it! most of them already know everything! No point in trying! Your experience means nothing! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525363 Share on other sites More sharing options...
JSmackchu613 Posted February 17, 2023 Author Share Posted February 17, 2023 Yes it is deleted truck. When old turbo was fine it use to run fine. Going to take it back to get a exhaust and boost leak check and VGT calibration checked. I tried myself to check for leak. I found exhaust leak but still cant find boost leak Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525476 Share on other sites More sharing options...
JSmackchu613 Posted February 17, 2023 Author Share Posted February 17, 2023 On 2/13/2023 at 5:43 PM, fjh said: I don’t think we should be seeing any smoke is it deleted? Yes it is deleted Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525477 Share on other sites More sharing options...
fjh Posted February 17, 2023 Share Posted February 17, 2023 4 hours ago, JSmackchu613 said: Yes it is deleted truck. When old turbo was fine it use to run fine. Going to take it back to get a exhaust and boost leak check and VGT calibration checked. I tried myself to check for leak. I found exhaust leak but still cant find boost leak So go to the front of the intake manifold and look at the bottom bolts they tend to break or come loose directly below were the /egr tube enters the manifold if bolts are missing check for a crack in the manifold at the bottom where the bolts are missing! A place to start! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-525483 Share on other sites More sharing options...
JSmackchu613 Posted March 24, 2023 Author Share Posted March 24, 2023 On 2/17/2023 at 10:10 AM, fjh said: So go to the front of the intake manifold and look at the bottom bolts they tend to break or come loose directly below were the /egr tube enters the manifold if bolts are missing check for a crack in the manifold at the bottom where the bolts are missing! A place to start! Thanks i will check it out Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-527799 Share on other sites More sharing options...
JSmackchu613 Posted March 24, 2023 Author Share Posted March 24, 2023 So my truck has been running fine for now. As far as black smoke problem. It is lot better not completly fixed. It still gives out black smoke but 1 or 2 sec between the gears. My EGR pressure sensor was bad. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-527800 Share on other sites More sharing options...
Joey Mack Posted March 24, 2023 Share Posted March 24, 2023 Thanks for the update.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72507-black-smoke-between-gears/#findComment-527808 Share on other sites More sharing options...
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