[tjsroka]

My truck is pretty much stock rite now. Ran a 100 hp ds program for about 20k miles. Truck now has a little over 40k on it. Bought it with 20k. Since I bought it 20k ago it has emptied my coolant overflow can completely! So in about 20k about 3/4's of a gallon of coolant is gone! Now aparent leeks and don't smell any coolant burning. Has anyone else had this problem? And will cummins warenty the head gasket if it is that? Not sure what it is any help would be cool!

 

[lonestarwelder]

You should have a 100k warranty on the engine...easy way to eliminate the coolant going into the engine is to look under the oil fill cap. If there is a milky-like sludge there...then you have a problem with coolant working its way into the crankcase.

I've had to add some coolant over time...approx 3/4 gal. Are you using the Mopar coolant? I'd stay away from the universal coolants. Look at the weep hole on the bottom of the water pump, check the hose from the overflow tank to the radiator (clamp is notrious for being loose/missing), and check for white smoke out of the tail pipe.

P.S. If you do have a problem with a head gasket, take off your tune/chip or they will void your warranty. They have ways of seeing if you have added or removed certain programs. Good Luck!!!

 

[tjsroka]

Hey thanks i will check the oil cap but never notice any white milky res under it!! And yea I put a hose clamp on the tube where the fill spout is.. Thought that was the problem but didn't solve it. I will use what ever coolant is recomened.. Thanks for the tip though!!

 

[TXAustin]

Crawl under the truck and look at the weep hole in the water pump. It can drip over time if it is bad. If it is wet at all just replace the water pump(about $60 or so). 3/4 of a gallon for 20k miles is very very small.

 

[Cekkent]

You can also take the oil filler cap off while it's running after it's thoroughly warmed up, and see if it puffs like a locomotive.

 

[steelhead01]

check the small coolant hose under the turbo on the passenger side of the engine.
common leaker. hard to see
the guys have covered it totally in this thread
dodge has a TSB upgrade kit for the repair with a far better hose and clamps

http://www.cumminsforum.com/forum/3rd-gen-powertrain/130935-coolant-leak-usual-spot.html

if leak is not there then pull the valve cover and check the freeze expansion plugs in the head for any leakage. they sometimes will start leaking or even blow out from overheating.

if you still have warranty and a good dealer shop, make them repair it.

make sure you have Mopar coolant antifreeze in it with proof of purchase when you take it to the dealer even if you have to replace it, shuts the service manager's bittchen up

 

[Kokalit]

The hose from the radiator neck to the overflow tank can also leak a tiny bit at a time. I put hose clamps on each end to eliminate those leaks.