truck severe miss @ idle/white smoke

[AAllen]

Stacked a hot juice with my bullydog on 90, made a pass @ pir friday made it about 1000' and truck started shaking with lots of white smoke out of the tailpipe that smells of diesel so far oil level not getting any higher but havent run the truck other than @ idle for a couple of seconds, Anyone have any suggestions or ideas will get it on a scanner in the morning but the truck is not showing any codes as of yet.

 

[TCluff]

Stacked a hot juice with my bullydog on 90, made a pass @ pir friday made it about 1000' and truck started shaking with lots of white smoke out of the tailpipe that smells of diesel so far oil level not getting any higher but havent run the truck other than @ idle for a couple of seconds, Anyone have any suggestions or ideas will get it on a scanner in the morning but the truck is not showing any codes as of yet.

HOPEFULY ITS NOT A VALVE SEAT!

 

[John Robinson]

Its a Injector, do a flow test & dont run it any!!! maybe you havent washed out a cylinder yet.

 

[AAllen]

2 bad injectors, the other four are real weak, replacing all 6 tommorow. In short don't stack those two boxes with stock injectors

 

[AAllen]

installed 6 new injectors yesterday did not fix it!!!!

 

[RMalone]

That sucks dude what is your next step? What has been checked thus far?

 

[DBraunig]

HOPEFULY ITS NOT A VALVE SEAT!

Man i hope not :--) I have seen that damage . Time for a compression test



Best of luck with it,



Dave

 

[AAllen]

next step is cummins I think no loud clanking coming from motor so I do not think its a valve seat, cp3 maybe,but I think I ll take it to cummins and see what they have to say maybe a timing or firing order problem but unsure at this point,

 

[AAllen]

got it back from cummins today bent exhaust valve on #5 cylinder

 

[AAllen]

found the problem

I think this explains it all,so much for the bent valve it was burnt through

 

[jwilliams3]

Melted motor.



Sorry to hear about it. When I first read your situation I figured it was a catastrophic failure.



Are you rebuilding or buying another motor?

 

[betterthanstock]

So did the #5 injector stick open, or crack?



I checked two trucks at idle, and #5 was hotter than the rest by 5-10 degrees with an infrared thermometer aimed at the manifold. #6 appeared colder than average in both engines. Need to check on a dyno.

 

[AAllen]

rebuilding it, and all the injectors look fine but i have a new set giong in the new motor gonna send the old ones in to have them checked out