No oil pressure in 360! help

installed a motor ive had sitting for a year on the weekend, it
started up fine except that there was no oil pressure!

plumbed in a mech oil pressure gauge and the was nothing!

Any ideas?

i thought i would take off the sump and check the oil pump, maybe the
oil pump drive has broken? the timing did seem to move about at idle
which could indicate a broken oil pump drive right?

amy ideas experiences appreciated!

 

If you ran a brand new engine without oil pressure long enough to watch
the timing "seeming to move about at idle" and wait for a reading on a
mechanical gauge, you probably now have bigger problems than faulty oil
pump drive to worry about. If the engine was used, with looser clearances,
maybe you'll get lucky.

Yep, time for dissassembly and inspection!

DS

 

Is this a new motor?? or a cut out used transplanted after a year!

New you should have primed the oil pump. Oil pump should have had
initial prime with oil put physically in it before bolting to the
engine. Then oil filter should be filled too!

If it's new and you did not prime you may have to remove pump and
physically prime cause it won't pump till the primed (oil makes the
gears cause suction)

Before start up the final priming is done with a priming tool mopar
P4286800 with distributor out and distributor gear / oil pump drive
pulled out (turn it counter clockwise with a big screw driver and it
will turn up off the gears the grab it with long nose pliers and pull
out) insert tool through distributor hole down into pump (put some black
electrical tape on hex rod (tool) so as not to gaul you pump drive
bushing) and spin it clockwise with a drill till primed turning motor
over occasionally to let cam oil holes line up to oil top end.

Now if it's a used motor pull valve covers and look for bent push rods
and or kicked lifters. (do that now any ways on a new motor)

Barry A. Lee

 

Did you prime the pump?

An empty pump won't pump. The last one I saw like that, I got away with
removing the oil filter and using a tube to fill up the pump from there.

Put the filter back on and away it went.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

 

plumbed in a mech oil pressure gauge and the was nothing!

The two things you didn't discribe is the very heavy clacking of the dry
lifters. "Can't hear yourself think over the noise". Also, no oil in the
clear plastic line to the gauge.

Larry

 

Pressure relief valve in oil pump may have jammed.