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Do you hear any hissing sounds as the engine is running? There may have been a vacuum line missed when everything was put back together. That can cause a high idle issue as well.
I checked it for straightness and no problems there at all.
Spent 30 mins cleaning the head and block and put it all back together.
I have 70 miles on it now and it runs better than before. Seems to have more power than it did the days before it happened. Maybe just my imagination…
Anyway. I’m still at a loss as to why it happened. But I’ll be keeping a close eye on it.
Thanks again for the posts. Still good to share all of this here just in case it helps someone in the future.
I checked it for straightness and no problems there at all.
Spent 30 mins cleaning the head and block and put it all back together.
I have 70 miles on it now and it runs better than before. Seems to have more power than it did the days before it happened. Maybe just my imagination…
Anyway. I’m still at a loss as to why it happened. But I’ll be keeping a close eye on it.
Thanks again for the posts. Still good to share all of this here just in case it helps someone in the future.
Best pictures i could get in a dark garage.
#2 and #3 Piston
Cylinders
The back of the uncleaned head
Also I know a lot of oil & coolant can mix in the water jackets when you pull the head.. but all cylinders had oil in them except for #4. (You can see this really well in the 2nd picture above.)
Best pictures i could get in a dark garage.
#2 and #3 Piston
Cylinders
The back of the uncleaned head
Also I know a lot of oil & coolant can mix in the water jackets when you pull the head.. but all cylinders had oil in them except for #4. (You can see this really well in the 2nd picture above.)
Those pictures were taken literally 30 seconds after i lifted the head off. A lot of coolant and oil dumped into the cylinders and i used my streamlight flash light (extremely bright) instead of flash for the picture.
I’ll take a few more pictures for you and clean it up and post them in a couple minutes.
Those pictures were taken literally 30 seconds after i lifted the head off. A lot of coolant and oil dumped into the cylinders and i used my streamlight flash light (extremely bright) instead of flash for the picture.
I’ll take a few more pictures for you and clean it up and post them in a couple minutes.
So I came home from work tonight and ripped into the head job (nothing like working a busy 8 hour day fixing other people’s cars, to come home and do it all over again for yourself!). It took me exactly 90 minutes to get the head off, including TDC and dropping the exhaust.
So here is what I found when i lifted the head…
Exactly as I thought.. burned right between #2 and #3 cylinder. The metal piece of gasket was still hanging there when i pried the gasket up. I checked the head and it is as flat as could be, and there is no evidence of wear or any reason i can think of for it to pop right there. This is a daily driven car that doesn’t even make enough power to get out of it’s own way.. so im really wondering exactly what caused this. Any ideas? Anyone have any experiences with these kind of head gasket failures?
Anyway, tomorrow ill clean it up and put it all back together. New oil, New coolant.. i plan on using the same plugs, just cleaning them up, since it has $12/ea Iridiums in it and making absolutely sure it is shiny clean and torqued perfectly to prevent this from happening again.
Also Eric: It’s good to know that works perfectly for leak-down testing. I didn’t think it had any difference from an actual machine. Also, i’ve been a huge fan of your videos for years and i guess you could say your like a true mentor to me in the automotive world and even my own career. Thanks for doing what you do!
So I came home from work tonight and ripped into the head job (nothing like working a busy 8 hour day fixing other people’s cars, to come home and do it all over again for yourself!). It took me exactly 90 minutes to get the head off, including TDC and dropping the exhaust.
So here is what I found when i lifted the head…
Exactly as I thought.. burned right between #2 and #3 cylinder. The metal piece of gasket was still hanging there when i pried the gasket up. I checked the head and it is as flat as could be, and there is no evidence of wear or any reason i can think of for it to pop right there. This is a daily driven car that doesn’t even make enough power to get out of it’s own way.. so im really wondering exactly what caused this. Any ideas? Anyone have any experiences with these kind of head gasket failures?
Anyway, tomorrow ill clean it up and put it all back together. New oil, New coolant.. i plan on using the same plugs, just cleaning them up, since it has $12/ea Iridiums in it and making absolutely sure it is shiny clean and torqued perfectly to prevent this from happening again.
Also Eric: It’s good to know that works perfectly for leak-down testing. I didn’t think it had any difference from an actual machine. Also, i’ve been a huge fan of your videos for years and i guess you could say your like a true mentor to me in the automotive world and even my own career. Thanks for doing what you do!
I’ll be pulling the head tomorrow to confirm my diagnosis. I’ll post pictures here to keep everyone updated.
I just can’t figure out exactly why it happened. No overheating issues. No predetonation..etc.
Thanks again for reaffirming my detective work. 🙂
I’ll be pulling the head tomorrow to confirm my diagnosis. I’ll post pictures here to keep everyone updated.
I just can’t figure out exactly why it happened. No overheating issues. No predetonation..etc.
Thanks again for reaffirming my detective work. 🙂
Well, I put the plugs back in and retorqued the #2 and #3 rocker arms and took off the radiator cap, kept spark and fuel disabled and took this video…. i’ll let it speak for itself.
I think its safe to say the headgasket is popped between #2 and #3 cylinder and pressurizing the water jackets only.
Any opinions/suggestions?
Well, I put the plugs back in and retorqued the #2 and #3 rocker arms and took off the radiator cap, kept spark and fuel disabled and took this video…. i’ll let it speak for itself.
I think its safe to say the headgasket is popped between #2 and #3 cylinder and pressurizing the water jackets only.
Any opinions/suggestions?
Ive pulled the head on this car multiple times (for my self, and for work). I can do it in about 90 minutes now, so thats no problem.
The car originally suffered the common #4 valve seal drop that these engines are plagued with when the original owner had it. he replaced the head and then the piston was damaged from the dropped seat and the connecting rod seperated from the piston 250 miles later, and he was going to scrap the car..
I bought it from him for $200 and put a good junkyard engine in it with a re manufactured head (among a lot of other parts) and it ran very well for 20,000 miles as i said above.
So ill definitely be pulling the head, but i just wanted to get some input on what im seeing. you are correct.. it is hard to make a definite call.
Ive pulled the head on this car multiple times (for my self, and for work). I can do it in about 90 minutes now, so thats no problem.
The car originally suffered the common #4 valve seal drop that these engines are plagued with when the original owner had it. he replaced the head and then the piston was damaged from the dropped seat and the connecting rod seperated from the piston 250 miles later, and he was going to scrap the car..
I bought it from him for $200 and put a good junkyard engine in it with a re manufactured head (among a lot of other parts) and it ran very well for 20,000 miles as i said above.
So ill definitely be pulling the head, but i just wanted to get some input on what im seeing. you are correct.. it is hard to make a definite call.
