my coolant leak with 3.4

i looked at the other thread about the person also having a leak and somebody stated: If the coolant loss was all at once and it was visibly leaking onto the ground, it may be something other than the LIM gasket (like a hose, radiator, or water pump).

I already did the LIM gaskets and water pump when I had the chance to do it. My neighbor thinks head gaskets but its mainly when I shut the car off or have it running for a long long time idling like an hour or so.

how much are you leaking and in what area of teh motor ?

Could be your heater hoses in back or a freeze plug, these radiators are also plastic and tend to blow out on the ends.

If you are leaking coolant into a piston, from a bad head gasket, your exhaust can be tested for antifreeze.

how much are you leaking and in what area of teh motor ?

Could be your heater hoses in back or a freeze plug, these radiators are also plastic and tend to blow out on the ends.

If you are leaking coolant into a piston, from a bad head gasket, your exhaust can be tested for antifreeze.

well its more or less out of the overflow tank.

well its more or less out of the overflow tank.


OK, was all the air purged from the cooling system ?
That can cause some blow back...

But if its constantly blowing coolant then its quiet possible your head gaskets are bad.

Vipey over in GA forums is going through a simular issue when he just had his LIM changed, now he's having coolant leaking somewhere...

When ever I've changed these LIM in the recent years, I try and do the head gaskets, especialy if the motor has 100k miles or close to that.
Just makes sence to me to spend that extra time and money, if you have it.
I usualy try and persuade my customers to do this on about any make/model automobiles just to save them, and myself, the hassle of tearing it down again.

Might also try a compression test to see if thier's any noticable issues.

Good Luck

Doesn't sound too good. :eek: That coolant dumping out the reservoir overflow normally turns out to be a head gasket issue on the 3400 engine.

Also, you could run a test on the reservoir cap and a cooling system leak down test. Whatever is happening it is overcoming the 15 psi rating of the cap.

removed the cap everything was going fine. switched and put on a new cap still doing the same thing. guess ill be stripping it down and getting the heads checked then putting on the head gaskets and finally back together. i would love to see it back to barely above 1/4 mark which is about 180s

anyways heads are getting taken off soon ill keep everybody up to date and let everybody know exactly what the problem was.