Hey everyone, great forum. I just got a 88 Grand Wagoneer with a 360 for free because the guy said the motor was shot and had no oil pressure. Well I started it up and played around with it and at start up it had about 80psi and after about a minute or so it dropped to around 40psi, then after another minute or two it dropped to about 10psi, all the while the engine still hadnt reached normal operating temp, only about 110 degrees, so naturally I saw the drop in pressure and heard the enegine start to make a little bit of noise, I shut it down, and just for the heck of it I started it right back up not even 30 seconds after shut down, and I looked at the pressure guage and it was right back at 80psi again, now it doesnt matter if it is warmed up or not, it almost always does this. Do you think I might have crud in the oil returns in the heads and the oil isnt coming back into the pan quik enough, or maybee my pick up is clogged, or could this be some kind of common problem with these trucks?? I am going to pop the valve covers off tomorrow and start digging in, I hope I will be going in the right direction.
Thanks in advance everyone, Jack