Coolant leak seems unstoppable (rear flange)
#1
Coolant leak seems unstoppable (rear flange)
I've had a problem with a coolant leak ever since I bought my car 2 years ago. Earlier this year when I did my t-belt change I spent some time replacing hoses and o-rings trying to get this to stop. The biggest perpetrator was the flange at the back of the head. While I was ordering parts I decided to buy a new flange just in case the orginal was cracked or warpped or something. Well, even after replacing the o-rings and flange it is still leaking there. It appears that the metal pipe that mounts to this flange is flexing it and creating a leak on the oppostie edge.
Anyone else ever have to deal with a problem like this? Is it safe to loosen the bolts between the metal pipe and the flange to prefent the flex? Or should I goop the hell out of the flange to head mounting surface?
Thanks for any suggestions.
Anyone else ever have to deal with a problem like this? Is it safe to loosen the bolts between the metal pipe and the flange to prefent the flex? Or should I goop the hell out of the flange to head mounting surface?
Thanks for any suggestions.
#2
RE: Coolant leak seems unstoppable (rear flange)
Do not loosen those bolts for the flange, its really easy to pinch the O-ring on the coolant flange (happens all the time) so get a new O-ring and try again.
#3
RE: Coolant leak seems unstoppable (rear flange)
I got it apart and the o-ring was not pinched. It is a little flat on both sides, but this is a new o-ring as of 4 months ago. Looks like I'm going to goop it up with black high temp RTV and see what happens.
#5
RE: Coolant leak seems unstoppable (rear flange)
Yea, it did that too. Actually every place where there is a hose fitting was corroded badly, but I fixed all of that back when I did the t-belt replacement. The only place I see fluid is that stupid flange at the back of the head, and it only leaks when the engine is reved up... at idle it doesn't leak a bit.
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