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Need Advice on 5.0 Headgasket Replacement

TepidRodExplorer

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Joined
January 4, 2023
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City, State
123 Main St
Year, Model & Trim Level
98 5.0 EB
Hi all,

Long time lurker, finally blew a head gasket and could really use some advice. For context, the car is a 98 EB edition 5.0 with around 140k. It is my dependable daily driver and road trip vehicle, I have owned it since around 100k and as far as I know it has never been apart. I've been solving coolant leaks for a while as hoses and clamps have gone bad, but while driving recently it got a little hot, then the upper coolant hose exploded, I pulled over immediately and let it cool. I fixed it on the side of the road but when I got her started she was misfiring. Had her towed home and found a small amount of coolant in the oil and a smell coming out of the radiator like exhaust and death. Compression test failed on the passenger side, I believe I blew the head gasket between a coolant passage and the exhaust, then overheated and blew the rest of the gasket between cylinders.

Anyway, I have removed the upper intake, egr, fuel lines, wiring, etc etc. I am ready to remove the lower intake, just waiting on the camshaft position sensor tool. There are now two issues preventing me from removing the heads.

#1 is the a/c. I have read on here that it is not necessary to remove and drain the a/c system, that I can remove the bolts holding the compressor to the accessory bracket and slide it away from the engine enough to access the head bolt underneath. I have also read that I can unbolt the accessory bracket with the power steering pump and a/c compressor still attached, support it somehow, and that will also give me access to the bolt.

My question for you all is do I need to be concerned about an a/c line rupturing or spraying refrigerant in my face if I were to attempt either of these methods? The car is obviously not driveable so I can't take it somewhere to have it drained, perhaps I can find a mobile mechanic willing to squeeze into my cramped garage but I imagine it won't be cheap, and then I will need to have it recharged later. I have absolutely no experience with a/c stuff so I could really use some guidance from anyone who had tackled this issue before.

Additionally, I was wondering if I could get away with simply replacing only the blown headgasket. Compression was normal (145-150) on the driver's side, the passenger side had 3 cylinders with low compression. If I don't bother with the driver's side head I won't need to touch the a/c, but I'm well aware that its not proper to replace one side only. What would I be risking by trying to only replace the passenger side, besides having to eventually replace the driver's side when it gives up?


The second issue I have is much easier to solve, but I figured I would ask since I'm here. A little embarassing but I can't get the bolt out on the back of the engine that holds the transmission dipstick. I have a big ass breaker bar and I've applied aerokroil and pb blaster but I can't get it. I smacked the breaker bar with a hammer and only suceeded in breaking a socket and slightly rounding the bolt. I have trouble getting back there due to a back issue and its a tight space to work in, anyone have any tricks or tips on removing it?

Please, if any of you reading have done this job I would really appreciate your advice or insight. I need to get this car back on the road asap as it is winter where I am and my other vehicles have summer tires and are too overpowered, too unreliable, and too low to drive to work in the snow. Also I hope that I've included enough keywords in this post that any answers can help someone else in the future.

Thanks!
 



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You will be fine moving the compressor around just don't force it to a position that the hoses resist.
You can do one side if you want. However, the first one went out at 140k, the other one probably won't last much longer.
 






Just thought I would post an update for anyone searching in the future. I was able to get access to the foremost exhaust bolt on the driver's side by removing the 3 bolts attaching the a/c bracket. I didn't realize but the bracket is attached to the head so it had to be removed anyways. It was actually very easy. I got both exhaust manifolds removed and although it was a ***** I got the collectors unbolted too.

I discovered something weird too. Every single exhaust stud was loose. I mean loose enough to spin with a socket and my fingers. One bolt was entirely missing, and the thread looks rusty so it has probably been that way for a while. The weirdest thing is I have never heard an exhaust leak and the car passed cali smog a few years back. I've got some ARP replacements so we'll see how those hold up. Wish I had some torque monsters to throw in there while its apart!

Now I am just waiting on the camshaft synchro tool, which doesn't seem to be shipping. I called everywhere in my area and nobody has one too. I assume I can remove it and mark the position, correct? Would I be risking losing my camshaft timing if I did that, and is it difficult to retime? Also if anyone has the tool appropriate for a 98 5.0 with a stock synchro that they would be willing to let go I would be happy to buy it from you.

Thanks again for the help.
 


















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