Engine/Transmission (1994 - 1998) the mysterious antifreeze leak puzzles a cummins mechanic

[Bandit1]

got my mule check out today by a cummins mechanic, at first glance and diagnoses he said headgasket bc there wasnt any bad visible external leaks. then he pressureized the system and none bled off when cold, then none bled off when hot, then checked for exhaust gas in the coolant, still found nothing. he finally said he didnt no where the coolant was going. possiblity that there was an air bubble in the system. he said keep on driving it until somethign shows up. thanks to all that replied to my last posting in the headgasket.

 

[JoshPeters]

Sounds like you have an honest Mechanic. Personally, I'd carry a gallon of coolant with you, and just keep an eye out. If it's a headgasket, it may be leaking into the combustion chamber and burning it. I just delt with a Mercedes-Benz V12 with the same problem.



Josh

 

[24VChev]

oil sample

Take a few oil samples of the engine oil. If the engine is burning the coolant it may show up a sodium in the oil. Make sure you have 1000 miles or so on the oil before you sample.





Malcolm

 

[patrobertson]

Hmmmm

It seems to me that if it was buring coolant somehow that the incredibile compression when running higher boost 30lbs + would cause compression to get into coolant and overflow the resevoir and lose coolant that way, but it is defiently noticible. Good luck



Shane

 

[PUMPERDUDE]

Try this if you havent already done so. Find the steepest grade you can and put it to the floor. On the downside ,pull over and check all along the head gasket right behind the T-stat housing. Thats where mine is toast... ... ... Boost = leak:{... Oh yeah,watch out for the troopers

 

[Rammin On]

Timmy ... You crack me up!!! First the trooper has to find YOU through all the smoke ... . Yeehaw!Oo.

 

[redram]

If the coolant is being burned or leaking into the oil or ??whatever, why not do a dye test and look for the evidence with a blacklight?



If you add the dye to the cooling system and the dye shows up in the oil, or the exhaust tailpipe, or externally on the radiator or head, you'll find your leak.



If you can't find it, then you may have truly had an air bubble.



Good luck.