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Blown head gasket


dylancorrea1

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So the car had been driving fine for a bit, decided to do a spin on a nice day, about 1 hour in on the way back, the car completely shut off and lost power, it wouldn’t turn back on. The only only way to turn it on is by turning the key and pressing the accelerator. It will not go faster than 5 mph. There is not much coolant in radiator, oil level seems okay, didn’t notice any “chocolate milk” although i did check a day after as I had something to do that day. Theres coolant that I can clearly see, I’m not sure if the car blew a gasket or just overheated, I pushed it back home as it was close. In the picture where the little liquid puddle has formed thats the coolant. Any ideas? f689f4bdb3ff98ad71040b444a5db864.jpg

f689f4bdb3ff98ad71040b444a5db864.jpg

 

 

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Not really a good idea to run without a temp or oil gauge. So it probably ran hot, warped the head, possibly scored the cylinders. It's gonna need some major investigation. I would pull the head and check for flatness.

Well I might run a compression test first...

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Not really a good idea to run without a temp or oil gauge. So it probably ran hot, warped the head, possibly scored the cylinders. It's gonna need some major investigation. I would pull the head and check for flatness.
Well I might run a compression test first...

The oil gauge works fine, its the temp one that Doesn’t , well damn it is as bad as i figured. I’ll give it an open sometime this week or next since its been raining non stop.


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I understand, my point was they are both very important on cars like this. No computer to shut it off on over temp or low oil pressure

They are and I definitely paid the consequences, so taking it apart is the best method ?


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I think you should do a compression test first while its assembled. That will provide some numbers first. Many parts stores have them and some have them as rentals. If you've never done one, ask questions...

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I think you should do a compression test first while its assembled. That will provide some numbers first. Many parts stores have them and some have them as rentals. If you've never done one, ask questions...

I do know how to do a compression test, ill start there it is dangerous to start though? Should i do an oil change and refill radiator?


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@dylancorrea1Your not starting the car during a compression test so don’t be concerned about creating any more damage. If you have questions on doing it properly please ask questions where we can help.  Good luck and pass on your findings. A cold test should give you some idea.

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I think a compression test is a good idea, however, the symptom of the car not moving faster than 5 mph isn't a sign of a bad head gasket. After the compression test I'd look into fuel supply problems and then ignition problems.

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2 hours ago, Mark Maras said:

I think a compression test is a good idea, however, the symptom of the car not moving faster than 5 mph isn't a sign of a bad head gasket. After the compression test I'd look into fuel supply problems and then ignition problems.

It is possible the engine is so badly overheated or low on compression that it wont make enough power to get over 5 mph. I suspect all the symptoms are related

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15 hours ago, dylancorrea1 said:


I do know how to do a compression test, ill start there it is dangerous to start though? Should i do an oil change and refill radiator?


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Look for coolant in the oil. Look at the dipstick, you might see some bubble looking spots on it. 

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20 hours ago, dylancorrea1 said:

 the car completely shut off and lost power, it wouldn’t turn back on.  The only only way to turn it on is by turning the key and pressing the accelerator. It will not go faster than 5 mph.

This is not enough to really begin making guesses.  Remove the spark plugs and examine them.  They can tell you a lot about what's happening in the cylinders.  You'll have to remove them anyway to measure cylinder pressure.

The fact that it runs means that you can listen to it and mess with it while it is running.  You can learn a lot that way also.

The coolant might be a "red herring".  Irrelevant to the running problem.

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On 10/22/2021 at 8:08 PM, dylancorrea1 said:


I do know how to do a compression test, ill start there it is dangerous to start though? Should i do an oil change and refill radiator?


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After the radiator upgrade, did you make sure the cooling system was fully filled before driving the car?

After this last drive when the engine began running oddly, did you pull the spark plugs? As already mentioned, used plugs tell a story.

Since the engine still starts and runs, does it make any odd noises? Even though the temperature gage doesn’t work, you can still get an idea of how “hot” it is getting, put your hand on the thermostat housing, upper and lower radiator hoses, the heater hoses, and the upper radiator tank. If it is too hot to hold your hand on it, it is running too hot. Otherwise, overheating may not be the issue.

It would also be a good idea to use a cooling system pressure tester. Pressurizing the system will immediately show any leaks.

I can’t tell by the picture you posted where the coolant is leaking from, so try and get some better pictures to post. All we can see is a wet spot on the crossmember. Also, it looks like the hoses are original. When you changed out the radiator, it would have been a good idea to replace all the hoses. 

You mentioned the weather has been poor, do you not park the car inside? Working on any car outdoors sucks, and these cars need to be kept inside anyway.

 

 

 

 

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fyi, that pic of the liquid is in the same place the coolant would accumulate on mine when the front cover was leaking around where  weep slot was located. this slot goes to a channel in the front cover that goes around the coolant flow passages between the block and front cover.

Not saying these has ANY thing to do with you running issues, just an observation.

 

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