Clicking Sound!
 

Okay guys, I own an 88 Supra turbo, and I recently had some head work done. It was torn down twice, due to a blown head gasket, and a mistake by the mechanic. The first time he released it to me, everything was fine, until it started overheating again. So I took it back.

He put the head gasket on wrong. So he re-did everything. I got it back, and it was fine! I started to notice a loud clicking sound when I accelerated. I looked at the engine and it isn't the fan clutch, nor any other fans(As far as I can tell). I got to looking closer, and I noticed the sound was coming from near the back of the engine, on the side where the turbo sits, close to the head. I checked the oil, and I put some in it(it was a little low) thinking it would fix the problem.

It's still freakin clicking! It's driving me nuts, because it's actually more noticeable than the sound of the car...and my car isn't quiet..AT ALL!

Does anybody know what could cause this?

I have this same problem, I think. My noise is near the back of the engine, from the head I think. Using a stethoscope it appears to be loudest over my #5 cylinder. However I can hear the noise on any peice of metal to include my turbo. If I take off the oil fill cap and put my ear near the opening I can hear it which makes me think it's in the head as well. I adjusted my valve clearances so that's not the issue. It didn't make this noise before the head gasket job but it does after it. Like your car, the noise is louder than the sound of the engine and exhaust. I refuse to drive it obviously so I am really getting frustrated as I can not figure it out.

I know what you mean. I just can't figure it out..it's driving me crazy!

I've got the same issue.. as soon as I replaced the head gasket and started it up, it clicks, quieter when cold louder when warm. I've been doing all the checks and have guys who know checking it out.. all say different things, but main bearings gone has been the most suggested. I'm assuming that the previous owner is somewhat lying to me.. he claims the car blew the gasket 100 yards from his house and he parked it right away. I think he drove it till it knocked then parked it. I haven't taken off the oil pan yet but that's my next step. Anyone ever run into these issues before and find resolution? If I figure it out for sure I'll post it.. please do the same if someone else fixes it!! Thanks

My friend is suggesting that the valves are out of line. Me and him are going to take off the valve cover and align them to factory specs, and if that fixes it. Ill post. Thanks for support guys, this is a mystery haha

Problem has been found, exhaust leak near the turbo, and manifold!

Dude you are the man! I'm not intirely certain that's the cause for my clicking sound too. However yours is described exactly like mine, and I just found a major exhaust leak from my manifold. Two of my manifold studs are stripped out. I ordered the kit to repair it from Driftmotion and hopefully once complete my supra wont be clicking anymore.

By the way, it's not bad to drive it that way. It's not recommended but you could drive it until you sold it, or retired it. The boost isnt going to be as good as it was before, but it's driveable. I'm getting mine fixed soon as well.

Okay, guys it was an exhaust leak.. One of the studs in the exhaust manifold were flipped around with the nut facing the wrong way..so that the end that was supposed to go in the engine was facing outwards. The stud was not long enough so it was leaking. It's fixed. Thanks guys.