1994 Cavalier 2.2 leaking head gasket - Chevelle Tech
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post #1 of 12 (permalink) Old Sep 27th, 19, 9:56 PM Thread Starter
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1994 Cavalier 2.2 leaking head gasket

If the head gasket is leaking towards the outside not into the oil..would this cause the engine to run hotter..?..seems like when going up a hill it heats up above normal..180 after it levels out returns to normal 180..fan kick on around 180 or so..

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post #2 of 12 (permalink) Old Sep 28th, 19, 3:12 AM
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Re: 1994 Cavalier 2.2 leaking head gasket

Yes ANY leak ANYWHERE on the engine will cause higher engine temps and overheating.Also most leaks like the one you describe not only leak outward but they suck air in as the temp rises and falls and the engine heats up and then cools down.
2 things seem out of normal.How is the head gasket leaking and not making smoke & steam as you drive? Are you talking about small drips and seepage ? that kind of leak can be fixed with a head gasket re-torque along with a coolant sealer if it hasn't been long since the last H-G repair.GM and others added the 4 brown pellet sealer with all their aluminum headed/cast iron block engines when they were brand new.
But if its a spraying coolant out the back of the block and over heating kind of leak then it's time to do the H-G over again.
The other thing is,if it runs 180* and the fan kicks on at that temp,that isn't normal.I worked on a lot of those era cars and most GMs of that era the fans kicked on at around 212-218* (some as high as 225*) as the engine's emissions were much lower at the higher temps.BUT for an older car about 10-15 degrees less may be better for its longevity or maybe not as engine wear can be accelerated at the lower temps.
Is it possible that someone added a fan switch that comes on at a lower temp.?
If you don't feel like doing the H-G repair over again why don't you look into the "Blue Devil" head gasket repair in the bottle ? I've used it on 2 cars plus one work truck that had a head gasket leak AND an intake gasket coolant leak.If you follow the directions to the letter it will seal that engine for you.One thing though ALL the anti-freeze must be removed and replaced with water or it won't work plus its a little pricey but it does work.Just one other choice for you.

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post #3 of 12 (permalink) Old Sep 28th, 19, 6:40 AM
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Re: 1994 Cavalier 2.2 leaking head gasket

Not on a 2.2. I've literally done hundreds of those heads.

I would be popping off the water pump to make sure the impeller isn't rotten. If its good, replace it anyway. Make sure your stat is opening. Cooling fan has to run and push some air.

If I was a betting man I would bet if everything checks out, last centuries model Chebby might need a radiator.

And do the head gasket. those happy trails running down the oil draft tube aren't really happy.

Couple of junkers and a few clunkers.
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post #4 of 12 (permalink) Old Sep 28th, 19, 9:16 AM
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Re: 1994 Cavalier 2.2 leaking head gasket

The coolant leak itself wont make it run hot but if it is loosing coolant and gets low then it most certainly will run hot. Clean your off real good and put some die in the cooling system. I bet that half of those heads that I have seen that supposedly had leaking head gaskets were actually leaking from the flat plate that bolts to one end of the head. It starts leaking and the coolant runs around and looks like it is leaking out of the head gasket. Those heads also had a porosity issue in certain years. The aluminum casting was porous and after a while would start leakaing through the casting itself. That is usually around the spark plug area.

So your first step should be to clean everything up real good, put some die in the system and run it to see exactly where it is leaking from.


And please, no matter what anyone says, don't use the Blue Devil junk. When the head gasket starts to leak again and you have to fix it correctly your machine shop will cuss you while they are trying to get all of that hardened cement like junk out of the cylinder head and you will have to get it out of the rest of the cooling system.
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post #5 of 12 (permalink) Old Sep 28th, 19, 9:32 AM
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Re: 1994 Cavalier 2.2 leaking head gasket

There's a whole lotta' people out there that are believers in the Blue Devil juice for fixing head gasket leaks. When a head has already been tended to for leaks once or twice with a head gasket replacement, the economics of doing another attempt simply don't add up on some older vehicles.

It boils down (no pun intended) to scrapping the vehicle or trying something like Blue Devil. What would you suggest in this case?

Rick
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post #6 of 12 (permalink) Old Sep 28th, 19, 4:36 PM Thread Starter
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Re: 1994 Cavalier 2.2 leaking head gasket

The leak I can see is more of a seepage..just enough to look wet..and I can smell the anitfreeze when the vent is on..not enough to leave a puddle or wet spot on the ground..ill post a photo in awhile on it..my other cavalier the cooling fan hardly ever came on..it was totaled awhile back..same kind of car and engine..this temp gauge needle will go to 1/2 which I figure is 180 the fan kicks on..going up a hill the needle will climb past the 1/2 point fan is on..but after topping the hill and leveling out it goes back to 1/2 or alittle less..have someone who is going to put the head gasket on $250 which is a pretty good price..wonder if I should go ahead and replace the radiator/themastat and water pump? while they in in there?thanks for all the help

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post #7 of 12 (permalink) Old Sep 28th, 19, 5:22 PM
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Re: 1994 Cavalier 2.2 leaking head gasket

Quote:
Originally Posted by Bandit1978 View Post
The leak I can see is more of a seepage..just enough to look wet..
Make sure you check the end plate like I mentioned in my previous reply. How much coolant are you actually losing ? How often do you have to add it ?




Quote:
Originally Posted by Bandit1978 View Post
I figure is 180 the fan kicks
Most GM fans don't come on till about 230


Quote:
Originally Posted by Bandit1978 View Post
have someone who is going to put the head gasket on $250 which is a pretty good price.

Like I said, make absolutely certain it is the head gasket and not the end plate. I bet almost half of the 2.2 heads I have had brought to me because of "leaking head gasket" have had the end plate obviously leaking and there was nothing wrong with the head gasket. The plate probably takes 20 minutes or so to remove and put on a new gasket.



If you do end up needing the head gasket make sure they have the head resurfaced. They are always warped a little and pitted up. Does not make any sense to do all that work pulling it off and not giving the new gasket a fresh surface to seal on.
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post #8 of 12 (permalink) Old Sep 28th, 19, 9:40 PM Thread Starter
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Re: 1994 Cavalier 2.2 leaking head gasket

1 quart a week..I can smell it some when the vent is on..not enough to see any puddle under the car or any steam off the engine.

Quote:
Originally Posted by BillK View Post
Make sure you check the end plate like I mentioned in my previous reply. How much coolant are you actually losing ? How often do you have to add it ?





Most GM fans don't come on till about 230





Like I said, make absolutely certain it is the head gasket and not the end plate. I bet almost half of the 2.2 heads I have had brought to me because of "leaking head gasket" have had the end plate obviously leaking and there was nothing wrong with the head gasket. The plate probably takes 20 minutes or so to remove and put on a new gasket.



If you do end up needing the head gasket make sure they have the head resurfaced. They are always warped a little and pitted up. Does not make any sense to do all that work pulling it off and not giving the new gasket a fresh surface to seal on.

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Last edited by davewho1; Oct 15th, 19 at 4:19 PM. Reason: fixed quote
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post #9 of 12 (permalink) Old Sep 28th, 19, 9:50 PM Thread Starter
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Re: 1994 Cavalier 2.2 leaking head gasket

end plate?photo of it?


Quote:
Originally Posted by BillK View Post
Make sure you check the end plate like I mentioned in my previous reply. How much coolant are you actually losing ? How often do you have to add it ?





Most GM fans don't come on till about 230





Like I said, make absolutely certain it is the head gasket and not the end plate. I bet almost half of the 2.2 heads I have had brought to me because of "leaking head gasket" have had the end plate obviously leaking and there was nothing wrong with the head gasket. The plate probably takes 20 minutes or so to remove and put on a new gasket.



If you do end up needing the head gasket make sure they have the head resurfaced. They are always warped a little and pitted up. Does not make any sense to do all that work pulling it off and not giving the new gasket a fresh surface to seal on.

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post #10 of 12 (permalink) Old Oct 3rd, 19, 1:51 PM
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Re: 1994 Cavalier 2.2 leaking head gasket

^^^ It's been a long time since I worked on one of these but it's on the drivers side of cylinder head there's a plate there that takes a gasket.

John
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post #11 of 12 (permalink) Old Oct 3rd, 19, 2:02 PM
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Re: 1994 Cavalier 2.2 leaking head gasket

I dont have one here to take a picture of but in the picture below it would bolt to the side of the head shown. The large rectangular hole is a water passage. On the fwd cars there is a plate that blocks off that entire end of the head. They use these heads on the S-10 trucks also and that is where the thermostat hosing bolts on on those.
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post #12 of 12 (permalink) Old Oct 15th, 19, 2:28 PM Thread Starter
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Re: 1994 Cavalier 2.2 leaking head gasket

Went ahead and had the head gasket replaced..it was leaking at the drivers side front corner..didn't have any effect on the temp of the engine..My old car just like this one..stayed very cool and never hardly ever got over the 1/4 mark which is about 140 or so..I was told maybe the radiator might not be flowing well..it is the original brass one that came with the car

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