losing oil pressure
06-04-2006, 09:16 PM
#1
0.0 BAR
Thread Starter
Join Date: Apr 2006
Posts: 0
losing oil pressure
okay, i've got the 4.9l inline 6 in my truck, and i've replaced the oil pump because i had no pressure at idle with the old pump (removal showed bad scoring of the pump internals) and now, it takes 20-25 minutes before pressure goes to 0 at idle, when i know i didnt ---- it up or anything, if im 15-20 mins into a town with a bunch of lights, i drop like 5 psi between lights, until i get no pressure, and my valvetrain starts to sound like a diesel fuel pump (good giveaway that ive got no pressure, i know valves need adjusted anyways though). is there some way i can install an electric pump vs my mechanical?
pump looks like
i have no problem with raising the motor to drop the pan, and install a fitting running through the pan (braided steel line w/ fitting to bolt to block, and compression fitting for clamping to the pan) and installing an external electric, but, is there something you guys know of? i really never heard of this problem before, anywhere, so i dunno whats wrong
pump looks like
i have no problem with raising the motor to drop the pan, and install a fitting running through the pan (braided steel line w/ fitting to bolt to block, and compression fitting for clamping to the pan) and installing an external electric, but, is there something you guys know of? i really never heard of this problem before, anywhere, so i dunno whats wrong
06-05-2006, 01:13 AM
#3
0.0 BAR
Thread Starter
Join Date: Apr 2006
Posts: 0
Re: losing oil pressure
Originally Posted by highroller54
you have no oil pressure because your rod and main bearings are fucked, maybe you could retrofit a oil pump from a v12 alison fighter plane engine they put out like a coked up **** star.
06-05-2006, 10:09 AM
#5
0.0 BAR
Join Date: Nov 2003
Posts: 0
Re: losing oil pressure
Originally Posted by c0mpl3x
my compressions on target,I dont care, wrong engine part
i dont have any bearing play so you wiggled the rods with your fingers when the pan was off
(barely 100k on motor, these things go for 500k)sometimes
what is bad bearings gonna do to my oil pressure?give you 0 at idle when warm because it just pisses past the bearings back to the pan.
i dont have any bearing play so you wiggled the rods with your fingers when the pan was off
(barely 100k on motor, these things go for 500k)sometimes
what is bad bearings gonna do to my oil pressure?give you 0 at idle when warm because it just pisses past the bearings back to the pan.
06-05-2006, 10:09 PM
#10
1.0 BAR
Join Date: Jan 2005
Posts: 319
Re: losing oil pressure
Hey this happend to me like 10mins ago .. swapped my Y7 to a y8 mani.. got it all runnnig good .. but the oil line b4 was ran inbetween the y7 mani cuz its open .. so i just cut it and got a brass fitting that splits it and i put it together but i guess just by hand because i was in a hurry fighting the rainy weather .. so i didnt crimp the little pieces on the nylon tubing and i took it for a test drive and like 3 blocks away i notices no oil pressure .. and i shut her off and coasted as far as i could.. checked the oil .. there was none all came out ... so ill be pushing it 3 blocks when it stops raining and ill make a run to the autoparts store in the morning b4 work for somt oil and a new fitting .. :P :P :P
