'91 Ford Tempo Engine Knock

Is it really a "Knock", usually low in the engine, or could it be "tapping", up high, like the rocker arms?

Check your oil pressure with a mechanical gauge

It Possible, you left something in the pan?

Use way too much silicone gasket?

Did you fight the pan off, maybe damage the pick-up?

Just throwin' stuff. You never know!

The Medic

I would be checking the oil pressure with a mechanical gauge as well, there may be come carbon deposits or sealant fouling the pressure relief valve, was there a lot of sludge in the pan?

Mhpautos,

My CJ 5 Rear Output shaft housing, on my transfer case, which is lubricated by gear oil slinging into the hole. Failed, due to a previous repair, before I got him.

The feller must have used the entire tube of silicone to install the covers.

It had been lying in the bottom for years. When I removed the transfer case to rebuild the tranny, then re-installed all. It must have broken loose, It plugged the 2 oil holes, into the housing. I not only destroyed the housing and shaft, but at 55 MPH, when it locked down, it torqued big-time and busted the case too!

Needless to say, but I was not happy.

I really STRESS the "EZ with the silicone" to everybody now!

I appreciate you, joining in and throwin' out additional info that I missed, that might very well fix this issue!

You are graciously welcomed to help me anytime!

The Medic

First, why did you change the pan? And does the knock change at all with acceleration? Foot on or off gas, in or out of gear?