Early signs of a BHG?

aaron_arthur

New Member
Jul 30, 2008
51
0
0
London
So the other day i was driving around as it was nice weather with the targa off, I got hungry so I pulled into a local A&W. I went inside with my friend to eat and as we came out i found a big puddle of coolant under my car :(
So i looked under the hood and found that the coolant over flow had pissed coolant everywhere. Thinking as i work at napa auto parts i went to the toyota dealership, since i get a pretty nice work discount there) got a rad cap and thermostate. I managed to get the car home safely after topping up the coolant.
Let the car cool down and switched over both parts, also switched the clutch fan with another one i had laying around. So i went to bed as it was dark out and had to work in the morning. After work went for another drive and the car ran fine, got home parked it and went to the trunk to get a few things and heard coolant pouring out the over flow again.

I thought to my self "to many air bubbles trying to escape?" so i got more coolant ran the car with the rad cap off for awhile to release the air while topping up the coolant. 20 min later good as new no more air in the system. took her for a drive and the same problem, got home after a few hour drive which the whole time the temp was fine, turned it off and few seconds later more coolant out of the over flow bottle. :( So i went back to work with my wiked discount and bought a brand new water pump. Before i use the new water pump on my engine that has 275xxxkm on it with im guessing ORIGINAL head gasket as all the paper work i have for the car does not include a bill for head gasket replacement. I decided to do a compression test, results as follows:

cylinder# 1 - 140psi
cylinder# 2 - 135psi
cylinder# 3 - 130psi
cylinder# 4 - 125psi
cylinder# 5 - 135psi
cylinder# 6 - 140psi

+/- 1 or 2 psi
The car DOES NOT blow smoke at all, this is why i am confused as to if it is a head gasket or not. I am yet to check the timing as i know that can be a problem as well.

Has anyone else come accross this or found results like this? as i belive its early signs of a BHG and if it is i am glad to find out this early before anything really goes wrong with the car.

I am currently building another engine on the side so i will use the new water pump on the new engine and not the one in the car, it is sad to say the supra now goes away for the winter this early :( until my rebuild engine is ready to drop in next spring.
 

Kevin

7mgte -> 7mgte swap done.
Apr 20, 2009
865
0
0
Windsor Ontario Canada
its a bhg sorry. Bhg doesnt HAVE to have white smoke pouring out your exhaust... it could be blown between the coolant and oil channels. I can almost guarantee you its bhg. those were the exact symptoms i had with my bhg.
 

aaron_arthur

New Member
Jul 30, 2008
51
0
0
London
well i have checked my oil and there seems to be no coolant in there so i belive it is just throwing combustion gases into the coolant system and making it bubble out of the over flow tank like tissimo said as thats what i thought it was doing before. another opinion never hurts thanks for you input guys :) now i get to start ordering and buying parts!

Thanks again
Aaron
 

Kevin

7mgte -> 7mgte swap done.
Apr 20, 2009
865
0
0
Windsor Ontario Canada