Passed Compression, now what
05-05-02, 03:58 PM
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Passed Compression, now what
Alrighty, ive been havin crazy bad overheating problems cus of all fluid being pushed out of system into reseavore, from what i read, that ment bad seals, but my compresion test says seals are good,
Left/Right/Top/Bottem
115/100/120/100 manual sayus a maximum varation of 21psi with miniumum psi of 87 being ok..
as far as i can undersand.. that says my seals are fine..(tell me if im wrong) could my h2o pump be bad? not pumping right, or enough, ive been without this car pretty much sence easter because of every consiveable problem, just lookint to get it on the road
Left/Right/Top/Bottem
115/100/120/100 manual sayus a maximum varation of 21psi with miniumum psi of 87 being ok..
as far as i can undersand.. that says my seals are fine..(tell me if im wrong) could my h2o pump be bad? not pumping right, or enough, ive been without this car pretty much sence easter because of every consiveable problem, just lookint to get it on the road
05-05-02, 06:12 PM
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hehe, compression checks check the Apex seals, corner seals and side seals (please correct me if im wrong, im not the best person to talk about with the internal of these crazy triangle engines 
) . What would cause your car to over heat and spit coolant everywhere would be the coolant seals (coolant o-rings), These seals are not tested by a compression test. Coolant o rings being bad, means a rebuild in most cases. I have heard of people that go to the local auto parts store and get this block sealant/coolant system sealant **** in a bottle thats supposed to seal even cracked heads on piston engines, when my coolant seal went i tried it and it helped a good bit, as a matter of fact, im still using it. But the cause will not be cured for sure with out a reabuild, sorry. I hope this helps and if im wrong someone please correct me.
) . What would cause your car to over heat and spit coolant everywhere would be the coolant seals (coolant o-rings), These seals are not tested by a compression test. Coolant o rings being bad, means a rebuild in most cases. I have heard of people that go to the local auto parts store and get this block sealant/coolant system sealant **** in a bottle thats supposed to seal even cracked heads on piston engines, when my coolant seal went i tried it and it helped a good bit, as a matter of fact, im still using it. But the cause will not be cured for sure with out a reabuild, sorry. I hope this helps and if im wrong someone please correct me.
05-05-02, 06:49 PM
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you need to have the cooling system pressure tested, or bolck checked (this is where they check for exhaust gas in the coolant). this is the reason compression tests aren't the best indicator of the engines health. it only tests one thing, you dont get an overall picture
mike
mike
05-06-02, 10:27 AM
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damit, and when i saw that test come back i though i was just overlooking somthing simple, what would a good sealer to use? i recal people talking about something called MMO or MOMO but i dont rember
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05-06-02, 11:24 AM
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Originally posted by CrackHeadMel
damit, and when i saw that test come back i though i was just overlooking somthing simple, what would a good sealer to use? i recal people talking about something called MMO or MOMO but i dont rember
damit, and when i saw that test come back i though i was just overlooking somthing simple, what would a good sealer to use? i recal people talking about something called MMO or MOMO but i dont rember
https://www.rx7club.com/forum/showth...threadid=55656
05-06-02, 12:00 PM
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Yeah.. If exhaust gasses are pushing the coolant out, you should be able to take the filler cap off (WHILE COLD!), start the engine, and look at it.. If you see bubbles coming up, that's most likely exhaust gas passing by the coolant o-rings... take a whiff of it to make sure...
If it is indeed the o-ring, the bubbles should come up whether the engine is warm or cold.
-Tesla
If it is indeed the o-ring, the bubbles should come up whether the engine is warm or cold.
-Tesla
05-06-02, 12:05 PM
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I have an FD, but I had 8.+ all the way around and a week later my coolant seals just went.
Pressurize the cooling system and see what happens, more likely than not, some of the coolant will end up in the combustion chamber - time to get a rebuild.
Pressurize the cooling system and see what happens, more likely than not, some of the coolant will end up in the combustion chamber - time to get a rebuild.
05-06-02, 01:26 PM
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Gosh darn, damit, more and more money going into car, less and less car coming back, i should just go to el-junk yard spend More moneys and try re-building a new moter i have nor money or the resourses to do this but damn.. a ive already spend more fixing the car than i did on it.. and i still cant drive it
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