1987 Merc 350 noise at high RPM, timing related

[thedillybar]

Re: 1987 Merc 350 noise at high RPM, timing related

Could this be a cracked coil tower?

 

[JustJason]

Re: 1987 Merc 350 noise at high RPM, timing related

Could this be a cracked coil tower?

Could be alot of things. Bondo asked ya for a picture of the spark plugs 3 months ago. I haven't seen them yet. We can't help you if you don't help us.

 

[thedillybar]

Re: 1987 Merc 350 noise at high RPM, timing related

I can't for the life of me get the camera to focus correctly on the plugs, so it's always a big blur. But they're all tan & look good.

Agreed on the guessing part...there has to be a better way. I have a mechanic's stethoscope (which is great), but listening to the engine while in gear & at rpm (and speed) just isn't going to happen. And no dyno