tjwwheel

Hey just was seeing if any of yall might have an explination for this,

Just rebuilt a stock LT1 and was driving it around today. Got home and check on the engine, cuz its still pretty new and was making sure everything is tightened down and all, and i realized that the engine coolant was overflowing out of the cap (bubbling and making hissing noises) . I waited a little while and went to releive some of the pressure that it had and it shot up like a guyser. Lost about a gallon of the stuff.

Could this simply be because it was overfilled? Or now that the weather is warmed up it built more pressure?

any explinations are appreciated

ZFreie

Sounds like you have the steam pipe and overflow tube mixed up on the radiator. I'm sure others will chime in tho.

shbox

Coming out the radiator cap or reservoir cap? If it is the latter, I would suspect you have the steam line and the remove reservoir line reversed at the radiator. If it was spewing out the radiator cap, either the cap was not on all the way or the cap may need replacement.

LigHtEmUp01

prob has air in the system try bleeding it with the bleeder screw on the hose going to the right side of the water pump let it run and crack it open until coolant omes out so make sure all the air is out

stevo9389

i have had both a reservoir return line mixed up and a bad radiator cap cause both on me. if the cap is more than a year old replace it anyway after checking the lines of course.

tjwwheel

it was coming out of the radiator cap, right next to the battery. So maybe it wasnt on tight, i'll screw it on and run it for awhile to see what happens

tjwwheel

i tightened down the cap as much as possible but it hits a point in which it wont turn anymore. so we'll see what happens later.

Drak03

Does it run hot?? If so the coolant system definately needs bled

tjwwheel

No it runs cool actually

Spartan7

iTrader: (7)

If it's leaking out the radiator cap, and you're absolutely sure it's on there all the way, then the cap is faulty. Replace it.