HELP! Our newly purchased Duramax Hummer
#1
HELP! Our newly purchased Duramax Hummer
Started making black smoke on a hill! Even on some fairly mild hills @ 70 MPH. Edge programer was set on economy.
we have owned it only 2 weeks, never did that before. only 9K miles on the Duramax. Then it started running normal again and has not done it in the 70 miles home. EGT was 1100-1200 during the smoke.
truck has ONLY been run on B99 since engine was new. we mixed in about 75% dino diesel shortly before the smoke issue???
we have owned it only 2 weeks, never did that before. only 9K miles on the Duramax. Then it started running normal again and has not done it in the 70 miles home. EGT was 1100-1200 during the smoke.
truck has ONLY been run on B99 since engine was new. we mixed in about 75% dino diesel shortly before the smoke issue???
#3
True. But it did not start smoking when we added #2 and has not smoked since that one incident. Lasted about ten minutes. We then continued our trip back to LA from Tehachapi (including some steep hills)
#5
no. it did not smoke during hills/mountain driving UNTILL we ran some #2 and then it only did it for about ten min. on some hills. VERY black smoke and alot!
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sounds confusing. It never smoked for 300 miles or so ON B99. Then shortly (2 days) after adding about 80% #2 it had the smoking incdent. is that clearer?
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sounds confusing. It never smoked for 300 miles or so ON B99. Then shortly (2 days) after adding about 80% #2 it had the smoking incdent. is that clearer?
Last edited by DZLROKET; 12-13-2008 at 06:10 PM. Reason: Automerged Doublepost
#7
possibly, but I thought it was an issue when you have been running #2 and then start Bio. This truck has been running B99 since new and has THREE fuel filters two of the are FASS?? Yes it is running strong again. Also we are only showing about 10-12 MPG on economy setting. Predator motorsports says we should be getting close to 22MPG. maybe another issue?
Last edited by DZLROKET; 12-13-2008 at 06:22 PM.
#8