over heating- air pressure in coolant...
#1
over heating- air pressure in coolant...
Just wondering what you guys think about my crazy truck issues...
I just got done with a complete rebuild on my 03. And for a month or so had no issues, thot everything was good! Had to bore it out 20 over to get the scarred cylinder wall clean. Then found a crack in the block in the cylinder wall. So it was sleeved and rebored..
Now it has developed the problem of weird random overheating. So I thot maybe the new thermostat I put in was bad so I just took it out, let it run cold... haven't had the overheating problem since but I haven't pulled a load or went up any big steep mountains...
The coolant is constantly under pressure even tho its cold. I took the radiator cap off and let it run for awhile once and the coolant is frothy/foamy and slowly bubbles over the top.
I've heard that sometimes when they sleeve these things it can tweak the block??
I suspect the head gasket is leaking or there is another crack in the block???
A friend of mine said to try replace the water pump? Is there any way that could be the problem?
Please give me some GOOD news!!!
I just got done with a complete rebuild on my 03. And for a month or so had no issues, thot everything was good! Had to bore it out 20 over to get the scarred cylinder wall clean. Then found a crack in the block in the cylinder wall. So it was sleeved and rebored..
Now it has developed the problem of weird random overheating. So I thot maybe the new thermostat I put in was bad so I just took it out, let it run cold... haven't had the overheating problem since but I haven't pulled a load or went up any big steep mountains...
The coolant is constantly under pressure even tho its cold. I took the radiator cap off and let it run for awhile once and the coolant is frothy/foamy and slowly bubbles over the top.
I've heard that sometimes when they sleeve these things it can tweak the block??
I suspect the head gasket is leaking or there is another crack in the block???
A friend of mine said to try replace the water pump? Is there any way that could be the problem?
Please give me some GOOD news!!!
#2
if the water pump isnt pumping good it could be. take it off and see if the fins slid on the shaft or something. normal things like rad. cap, water pump, fan, etc. check first. did you have your head decked when you rebuilt motor. my 6.7 done this and i tried everthing but i had a head gasket blowed.
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thanks for all the help... I called the machine shop where I had the engine and head. Talked to him for awhile and he is willing to refinish the head if it needs it, He is a really good guy!! I'm fairly confident that it was as smooth as it needs to be, but I guess we'll see.
I'm gonna take the head off and have it checked again. Also check the head bolts to see if they stretched. I guess while its apart i need to check the block and see if its warped... How do I do that? Can I check while is sitting in the truck?
Well I think before i do all that I'm gonna try a new water pump... About how much are they? Is it ok to get one from like napa or should that b a genuine cummins thing?
I'm gonna take the head off and have it checked again. Also check the head bolts to see if they stretched. I guess while its apart i need to check the block and see if its warped... How do I do that? Can I check while is sitting in the truck?
Well I think before i do all that I'm gonna try a new water pump... About how much are they? Is it ok to get one from like napa or should that b a genuine cummins thing?
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