so i was crusing down the interstate, at 85 like usual, and I noticed that my temp gauge was rising past it's normal. not in the red, but higher then normal. I checked the resovoir and it was almost empty. I don't know where the coolent is going, I just did a HG on the SOB maybe 2 months ago. so what is the likely cause of the lost coolent? what should I check first?

 

you might wanna check the blinker fluid.. and if is low put water in it, has long has is not goin in the motor you'll be fine :P

 

bleed yo ----

 

yeah let the ****** run at idle for like 1/2 hour without the radiator cap on and keep filling it up, you probably got air in the system, or your new HG is bad..

 

it ONLY gets hot on the interstate. and I changed the HG like 2 months ago, so I would think that it would have had problems before this? I will try to bleed it out and see how that goes. then do an interstate run.

 

well i bleed it, same results on the interstate. maybe I will try a low temp thermo....still doesn't explain WHERE the coolent went.........

 

did you check the head for straightness? the block?

 

the head and the block should be flat.

is there something more basic(like not a tear down) that i should check?

the symptoms:

hot only on the interstate, while in town, it has zero problems.
missing a small amount of coolent(1/2 the res. bottle) don't know where it is going, cant identify a leak, theres no oil in the coolent, or coolent in the oil.
has new HG, water pump, timing belt.
I DID reuse the headbolts.....
I am not experiencing a loss of engine power.

the thing is, it doesn't actually overheat, it is just above the normal operational temp. it only makes it to the top of the symbol on the gauge, and in normally hangs out at the bottom edge of that.

I will be really pissed off if I need to change the HG again. fo reel.

 

one other thing, if I turn the heat on it goes back down to normal operation temp.........