Headbolt Failure on 2008 C63 Estate




I was driving 130km/h on cruise control and suddenly the car started changing gears and slowing down. I didn't get any CEL on the dash.
I drove about 2km to the next gas station at 100km/h and the engine temps went crazy jumping up and down from 120 to 141 degrees celsius.
I haven't noticed any smoke.
The whole coolant is gone, although I added 200ml of coolant last week.
The heating in the car doesn't work. I haven't started it since I stopped on the gas station.
No warranty for me. I'm really depressed now.
Last edited by olszowa12; Dec 7, 2013 at 08:54 AM.
Going to suck, many won't have warranty.
Try keep these posts in the head bolt sticky so they can be referenced and counted.




We hooked it up to STAR and there was nothing apart from a low coolant level message.
We cheched the engine bay and it turned out to be a leak on the rubber hose from the coolant reservoir to the engine.
We started the engine - NO BLUE SMOKE !
So the headbolts are fine.
Mods please change the thread title to - "Headbolt false alarm"
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all this damn headbolt paranoia going on. Im sure its only going to get worse as time goes on and the cars get passed on to second hand owners and get more and more neglected. Just an excuse for everyone to get the cnc ported heads and arp studs to go with that blower kit
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all this damn headbolt paranoia going on. Im sure its only going to get worse as time goes on and the cars get passed on to second hand owners and get more and more neglected. Just an excuse for everyone to get the cnc ported heads and arp studs to go with that blower kit





Last time I checked, I could buy a complete used C63 engine for about $7000.
I don't know how much the labor would cost though.




The car should run fine once the part is replaced and coolant is filled up.




You're saying I should change my transmission fluid now?




Thanks for the input guys. I will keep you posted what comes of this on Tuesday.
I only hope the head gasket is not damaged.
..Anyways I'm glad your car is fine matt!






