Picked up this car from a fellow member last weekend in a swap for mine. He suggested it might be the oil pump but it seems so intermittent I'm not sure. I'll confirm tomorrow but it appears as if the oil pressure gauge stays high when the engine makes the sound. I'm thinking something in the valve train but not sure. Any ideas on where to start? Thanks in advance.
Ok engaging the clutch makes no difference in the noise but I found tonight that makes the noise after a spike in throttle so I recorded another clip. Also, it appears as if it's coming from the firewall side of the engine (as heard on the stethoscope). Could this be piston slapping?
Clacking. Generally a valve/lifter issue. The valves/pushrods might need adjustment. Sounds similar to when overhead cam cars sit for a long time and you get valve racket until the lifter refill with oil. So valve lash adjustment or maybe some bad lifters or - Did car sit for more than 2 weeks?
Clacking. Generally a valve/lifter issue. The valves/pushrods might need adjustment. Sounds similar to when overhead cam cars sit for a long time and you get valve racket until the lifter refill with oil. So valve lash adjustment or maybe some bad lifters or - Did car sit for more than 2 weeks?
I'd go for that as well
jon
[This message has been edited by jon m (edited 08-23-2014).]
Clacking. Generally a valve/lifter issue. The valves/pushrods might need adjustment. Sounds similar to when overhead cam cars sit for a long time and you get valve racket until the lifter refill with oil. So valve lash adjustment or maybe some bad lifters or - Did car sit for more than 2 weeks?
I just picked up the car last week and am not sure how long it sat. The previous owner informed me that it has been making that noise while he owned it (drove it approximately 3k miles). I have to pull off the valve covers soon anyway as the gaskets are leaking so I can check the valve lash then (although I've never done it and it appears there are several prevailing opinions on how). How would I determine if a lifter needs replacing? If one (or more) does, can I do that without tearing the engine down and replacing the cam as well?
Also, I purchased a high volume oil pump to install - would this help "unstick" a lifter?