so much fun for... for the first couple of days!... i was there a week just got home driving 10 hours. new years eve was great!!

anyways i have been having some coolant problems recently. truck runs good, cool but im losing coolant. i have a new radiator (all metal 91 non-ic) a new upper house and new thermostat. it started doing it about a month ago. 2 times now my truck got HOT! while driving and waiting for the thermostat to finally pop. each time my coolant tank overflows when i release the pressure cap and i end up having to add alot of water. usually when it over heats its when im driving the truck hard (not towing just around town having fun).

so i just did a coolant flush and put it another thermostat thinking maybe me beating it made the thermostat stick and overheat but it still loses some water slowly. i have check all my heater lines. the last few days i drove it after doing a flush and another thermostat it seemed fine but when i just got back from vegas it shot alittle bit of water into the over flow when i popped the cap but then i had to put half a gallon of coolant in. I've been bleeding it and im confused. anyone know where i can buy a head gasket tester (combustion flowing into radiator) the one you plug on the radiator and use the special dye to see if it changes. im going to use my pressure tester tomorrow and check it out. this is pissing me off!

my pressure is pretty high by feeling the upper rad hose. im thinking maybe my headgasket is leaking from combustion to coolant and beating the thing is making it worse. if it wasnt wet here already id leave some dry cardboard under my truck but with my luck id just get oil i dont see any leaks anywhere. help!


THANK YOU!

 

Are you using the Cummins t-stat?

 

Good point Big Ragu. Are you using the updated PN cummins t-stat.

 

no im using a motor-rad 180 and i ordered a 192. it fits in there perfectly and it has the little jiggler thingy up top to alow air to get by. im not sure what the deal is with a cummins thermostat