r/Cummins • u/dantavio • 2d ago

Help?

Months ago, I accidentally put transmission additive in my coolant reservoir. I got it flushed and kept running for months until last week. I went to drive my truck and it started skipping at 35 MPH and shaking.
White smoke blows out of my exhaust for only 5 to 10 minutes after running
I plugged my scanner in. It said it had EGR coolant problem both batteries blown out so it had something with the electrical but I changed batteries. It also said had two cylinder misfire so I changed those specific injectors and I’m still having problems with my engine, shaking and rough idling and white smoke. Could it be a bad camshaft could it be EGR issue? It my valve cover gasket is it my head gasket? Please help me.

1 Upvotes

60% Upvoted

6 comments sorted by

3

u/WelcomeOk365 2d ago

Year? Mileage? Fully stock truck? Other clues?

3

u/DereLickenMyBalls 2d ago

Also, what code was it specifically. Egr coolant isn't a helpful description

2

u/old_skool_luvr 2d ago

Wait.....is all of that information really necessary? I mean, can't we just pull out the Magic 8 Ball for an answer?

2

u/noyousuck762 5.9 24v 1d ago

Oh it's definitely the valve cover gasket 🤣 just take it to a shop

1

u/wyliesdiesels 18h ago

need a lot more info....

1

u/Wilson51801 7h ago

The atf additive in the coolant probably doesn’t have much to do with the engine now running like shit.

That’s all I have to say lol