djweej

i have a broken internal seal that since is winter leaking badly. i was wondering if that coolant seal formula or whatever it is would help the problem. i was wondering if it would mess up my rotors or the apex seal. please help. much appreciated.

mazdaracer78

there is no permanent fix... there is a procedure with block sealer that is very intensive and may buy you some time.

the only true fix is an engine tear down, inspection, and build.

coolant wall or seal failure seems to be very common in 86-88 blocks.

before you use any block sealer, you should check for a pressurized cooling system.

if your coolant system checks out then you got lucky and sealer will have a better chance @ working.

i'm sorry to say but that is the best news i can offer.

i've had this problem happen to me 3 times since 94'.

Magpie57

My 86's previous owners suspected this same problem and decided to use radiator stop leak. Well it might have plugged the internal leak but at the same time stopped up the heater core and much of the radiator. I had to flush out the entire cooling and heater system with acid /water to get the heater to work and get the car to not boil over every time I looked at it sideways. Opt to fix the seal the right way or try what Mazdaracer78 said. LOL

mazdaracer78

i'm also against using any sort of sealer...

this is not my engine, however, therefore it is not my call...

texFCturboII

iTrader: (17)

These engines are so innefficient at dissipating heat that I wouldn't chance throwing in a sealer to clog things up. The only way to fix it right is to rebuild. Join the club

no piston drifter

well put id say, hate rebuilds

mazdaracer78

stock, yes the engines do not dissipate heat well enough...

however, with a few simple mods, they do not retain enough heat in colder climates.

for example, i have a koyo, black magic fan, coolant jacket mod, stock thermostat, cowl style hood vents, and this year I HAVE NO HEAT UNDER CRUISING CONDITIONS...lol

anyways, my point is, if any forum members live up north and drive their car year round, be careful not to modify the cooling system too drastically.

djweej

well the coolant is not leaking onto the ground. well it is, but that is from the heater hose with a small puncture. but anyways the housing isnt leaking out just the seal is letting coolant into the rotor housing. which is why it takes my car 15 mintues to start when really cold. and it smokes like hell. i keep my car in the garage at night with the heater set at 85 so in the morning i have to push my car out so that all the smoke doesnt go into my garage. but any information would help . so thank you

mazdaracer78

if the leak is internal but not on the compression area...

you could try "evans npg +4 coolant" it's a zero pressure coolant...

there are a couple of mods to do with this before filling your cooling system...

no guarantees, but if you had a 0 pressure coolant and a 0 pressure cooling system, it may buy you some time...

djweej

ok i thank you so much. i will look into that coolant. money is tough as many of us know. and this car doesnt exactly give me much money to blow on. always fixing something. but what can i say. i still love them. lol