black smoke and hard knock on lb7
#1
black smoke and hard knock on lb7
i got a buddy with a 2001 3500 6.6 lt dmax, he was pulling a trailer and all of a sudden his truck started knocking hard and pouring out black smoke. we checked the glow plugs to see if they were wet but that was a dead end. we put a little computer up to it and it showed no DTC's and there were no check engine lights on either. im not sure what else to check for. anybody have any suggestions? anything mentioned would be greatly appreciated
#2
#3
#4
if a injector was stuck closed it would not be over fueling and blowing smoke. i think britewhite is right about the boots for it to be that sudden. these inter coolers have plastic plugs that can blow out and cause boost loss also so you might want to get that checked out also. how does it run at an idle without boost? i think it might be unlikely but i would check your turbo out also pull the intake hose off and check for damage to the impllar and see if it has much movement. it should have some give up and down but not much. as long as its not hitting the housing it should be fine
#5
Thread
Thread Starter
Forum
Replies
Last Post
Timglow546
Ford Powerstroke 03-07 6.0L
8
06-03-2015 10:13 PM
gator515
Diesel In Distress - Support Ticket
0
01-14-2015 01:56 PM
UC Kid
Chevy/GMC Truck and Duramax Turbo Diesel Forum
1
10-20-2014 10:06 AM