I have a 1998 cummins 12 valve that smokes (white and gray) out the entire neighborhood when cold. After 10-15 minutes of highway driving it clears up but normal driving has no effect however i am not loosing any coolant or oil.

 

How long has it been doing that? It's pretty common for a diesel to smoke white and grey when cold, my 7.3 will let out a huge could of smoke for a couple minutes if it's really cold.

 

Since i bought it 2-3 years ago. It will smoke for hours until highway driving. Thanks

 

What injectors you running? Some times the pop pressure of the injector will have to adjusted, as they get weak after time.

 

They are the factory Cummins injectors. Is there an adjustment/Where is the adjustment on them? Thanks

 

The injector need to be reset for pop pressure. You have a 180 or 215HP truck? I would just buy a new set of injectors like 7X10's set at 260 bar pop pressure.

Have you checked the timing yet? Have you done any injection pump mods yet? Nice truck, I've done up a few 12's over the years. The 180/215 pumps work pretty decent, nice truck. You have any pictures?

 

Yes i do. In the picture you can see the smoke to the left of the truck

 

Heck you should move up here, my old 02 2500 cummins auto would smoke out a parking lot. I had a fat set of 7X14's sac injectors in her with a very low pop pressure. Its a 02 truck with VP pump, but pretty much the same deal just 24 valver waiting for a P7100 pump.

Nice trucks, looks like the pop pressure is getting weak. Nice old 3500 truck. With a set of 4kgsk and valve springs, would make that truck into a completely different truck.We took the fuel plates out of our pumps and loosened up the afc spring. A buddy truck did 650rwhp on a stock 12mm 175HP p7100 pump, 7X14's sac's for injectors, twin turbo HX40/S475

 

Thanks for the help. Ive got a 1994 Dodge 12 Valve that is turned up post-boost and it spins on dry pavement if you get in it. Planning on paint, bull bar soon.