HT4100 4.1, 4.5, 4.9 Discussion, Coolant Leak in Cadillac Engine Technical Discussion; I recently purchased an '87 Sedan Deville. The car is is in pristine codintion. Only 39,000 original miles. I have ...
I recently purchased an '87 Sedan Deville. The car is is in pristine codintion. Only 39,000 original miles. I have discovered that there is a coolant leak. The local Firestone repair shop looked it over and told me that I need to replace the intake manifold gaskets. Although the car has extremely low miles, I'm told that age is the problem. The repair is estimated at about $1000. Has anyone tried any of the Bars Leak chemicals? Just curious how effective these might be.
Automobile(s): 1988 Allante' (sold), 1984 Eldorado, 84 Sedan DeVille
Re: Coolant Leak
Do not drive this car until the gaskets are changed. Intake coolant leaks will quickly wipe out the cam and lifters. And, yes its age and lack of timely coolant replacements that cause this. Make sure after replacement that the GM sealant is used. Part no. is on the white decal on the radiator support. Stop leak, Barsleak are NEVER permanent repairs, they allow you to get home so it can be done correctly! Once fixed, coolant MUST be changed at 2 year intervals.
dude i had the same exact problem. while repairing i figured i might as well do the head gaskets while im there. which is a PITA. i ended up stripping 3 head threads, and finding the correct tools to repair them, ie, drill bits, insert tools, and inserts was absolutely ridiculous. and then i ended up stripping a rocker arm pivot bolt, and breaking a rocker arm pivot. my advice to u is to take your time and be very careful if you attempt to do this repair yourself. each set of bolts i took out i put in a ziplock bag and marked on the bag where they came from cuz im still working on it on and off for 3 months and had i not marked them i would have no idea where they go. with the amount of time and money ive spent doing this myself i could have had it repaired and the dealership and have some sort of a guarantee that everything will be working alright. best of luck to you!!!