HPOP Level Low
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#3
Well its a friends truck.. went by today and the hpop was about 4-5 inches from the top,according to them . Level is good . Truck just died. They replaced fuel pump today . We got the truck stated ..had some air in it and got it all cleared out . My con cern is what caused it to die fuel pump ? or low oil level in hpop.
#5
A leaking anti-drainback valve will cause the oil to leak down after sitting. It is a check valve in the top of the block, that allows oil to feed the reservoir on start-up. It could have something stuck in it. You can take it out pretty easily. Square drive plug below the HPOP reservoir to the outside of the IPR. (Usually hard to see cause it is dirty)
The other thing it could be is the stand-off in the reservoir is broken.
The other thing it could be is the stand-off in the reservoir is broken.
#6
#7
A leaking anti-drainback valve will cause the oil to leak down after sitting. It is a check valve in the top of the block, that allows oil to feed the reservoir on start-up. It could have something stuck in it. You can take it out pretty easily. Square drive plug below the HPOP reservoir to the outside of the IPR. (Usually hard to see cause it is dirty)
The other thing it could be is the stand-off in the reservoir is broken.
The other thing it could be is the stand-off in the reservoir is broken.
Stand -off valve... is it easy to get too ?
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If the HPOP reservoir is low, the HPOP will not have enough oil to fill the heads and maintain pressure. To start the truck needs to see roughly 500 PSI on the ICP sensor in order for the PCM to send the signal to the IDM to fire the injectors. If the HPOP is starving or sucking air you will definitely have a no start situation. Since air does not compress like liquids you will not get enough pressure in the heads to trigger the start.
You should check the oil pressure from the LPOP to make sure you are getting enough oil to the system. If the truck runs fine, once it is started, it is more than likely a reservoir drain issue.
You should check the oil pressure from the LPOP to make sure you are getting enough oil to the system. If the truck runs fine, once it is started, it is more than likely a reservoir drain issue.
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#14
What ken mentioned, the truck runs great, onced fired. Just checked resivoir now, and back to 1 to 1-1/2in below plug.
Do you remove anti c.v. nd clean or replacet he o-ring and seat. Or if its the drain tube, is it replaceable from within the resivoir, and if so, by chance any of you have that p/n? thanks again for any input
Do you remove anti c.v. nd clean or replacet he o-ring and seat. Or if its the drain tube, is it replaceable from within the resivoir, and if so, by chance any of you have that p/n? thanks again for any input
#15