Any techs around that can tell me how to fix a valve tick coming from cylinder 1 on a 3800 supercharged L67. Just bought the car for peanuts because it needs a supercharger rebuild, but I was cleaning the engine and it developed the tick up top. Anyone ever dealt with this? Im taking the valve cover off tomorrow to look for obvious things.
Any techs around that can tell me how to fix a valve tick coming from cylinder 1 on a 3800 supercharged L67...
Logan Harris
Joshua Long
Sure it's an upper end noise? I've had TWO L67's with spun rod bearings now. Fucking meme engines.
William Myers
It seems too light to be a rod knock, plus it goes away and fades in intensity sometimes. Also i used a stethoscope and it sounds really loud on the valve cover. But all in all it seems too light for a rod and it doesnt change when I unplug the plug.
Charles Perry
If it is a rod knock would changing the bearings with the engine in the car fix it?
Nathan Sanchez
Not without machine work. Unplugging the spark plug isn't going to do anything to help yor diagnosis. It's going to be impossible to diagnose a noise over the internet. First thing I would look at is the lifters.
Connor Allen
Am going to tomorrow. Anything in particular i should look at?
Josiah Walker
It's not GMs fault people beat the shit out of a supercharged car for over a decade
Learn how to find a good car
Easton Kelly
Not really. First one the owner had glittered the engine.
Second one actually wasn't that bad but the crank was wiped.
You'll know right away if it's top end or bottom end. Don't these things have an issue with something in the M90 breaking and making noise? Sure it's not that?
I don't give a shit, not my cars. Just customer cars. I would never own one of these piles.
Bentley Kelly
Is it a legit mechanical ticking or is it perhaps an exhaust leak?
Is it a knocking or ticking sound, OP?
If you say it comes and goes I might suspect a lifter. My lifters would 'tick' noticeably on engine decel. Replaced with CompCam OE lifters.
>Pic related is my L36 with a few simple mods
Mason Thompson
Are you sure that it isn't just the regular ol GM lifter tick? It should go away once it heats up.