Head off, clean valves, pistons, anything else?
#1
Registered User
Thread Starter
Head off, clean valves, pistons, anything else?
Backstory: Wife always wanted a S2k when she was younger and finally got one. '03 AP1 looked a little rough but she ultimately wanted it. Bought and drove about 300 miles home no issues. Couple months later it suddenly started overheating. Burped air several times. Coolant level progressively started dropping with no leak. I compression tested the motor and it was good across the board. Saw oil sludge in her overflow. Did Blackstone oil analysis and they saw coolant in oil. I told her stop driving it and I would help her out.
Now, I pulled the head off, cleaned her engine bay of gook and found some issues. Previous owner clipped the injector clip and soldered wires directly to the injector. Also I'm guessing he was running a piggyback because all injectors had taps on them. I'm going to replace all of them with fresh clips. New HG + bolts x 10, valve cover + spark plugs and gaskets (leaking), Billman TCT (terrible TC rattle), new plugs, thermostat + gasket (precautionary), flush rad/hoses.
Was going to scrub some carbon off the valves but leave the pistons alone since I don't want carbon scorring walls. Anything else while I'm in here that I should do? That intake manifold was terrible removing. I never want to see this car again in my workspace, lol.
Now, I pulled the head off, cleaned her engine bay of gook and found some issues. Previous owner clipped the injector clip and soldered wires directly to the injector. Also I'm guessing he was running a piggyback because all injectors had taps on them. I'm going to replace all of them with fresh clips. New HG + bolts x 10, valve cover + spark plugs and gaskets (leaking), Billman TCT (terrible TC rattle), new plugs, thermostat + gasket (precautionary), flush rad/hoses.
Was going to scrub some carbon off the valves but leave the pistons alone since I don't want carbon scorring walls. Anything else while I'm in here that I should do? That intake manifold was terrible removing. I never want to see this car again in my workspace, lol.
#3
No warpage in head or block surfaces?
Good luck with fix!
Good luck with fix!
#5
Registered User
Thread Starter
#6
Do you know what caused the oil-water leak? Head gasket blow?
Seems that the valves on number 1 cylinder were changed-out, in the past. Do you think this related to the pressure leak?
Thanks!
Seems that the valves on number 1 cylinder were changed-out, in the past. Do you think this related to the pressure leak?
Thanks!
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#8
I guess I would want to have a clear idea how the water got in there, and why it got in there, before I put it all back together. I'd want to know the root cause.
#9
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Thread Starter
Thank to all for the feedback
#10
Registered User
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Also I don't consider myself the s2ki expert by any means, but on cylinder 2 it looks like one of the intake valves is "sunken in"--meaning it could be cracked. I'll be taking them off soon to inspect. Hopefully I don't find any crazy surprises.