HPOP is draining
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Junior User
Joined: Nov 2006
Posts: 50
Likes: 0
From: south fla.
HPOP is draining
Hi All
It went down a pint over night.
Do you replace the spring or stretch it like we used to the oil pressure springs on the old 292 and 312's to increase the oil pressure.
It went down a pint over night.
Do you replace the spring or stretch it like we used to the oil pressure springs on the old 292 and 312's to increase the oil pressure.
Post Fiend
Joined: Jun 2006
Posts: 5,497
Likes: 7
From: Central, Al
The service manual list them as separate parts but doen't list any numbers for them.
3 — Anti-drain check ball cap (part of 6658)
4 — O-ring seal (part of 6658)
5 — Spring (part of 6658)
6 — Check ball (part of 6658)
If you stretch it and get it too stiff there is a chance the LPOP wont feed the HPOP on startup.
HPOP
uring initial start or cold start, the high-pressure oil pump (6600) receives unfiltered oil from the left side valve lifter oil gallery through the anti-drain back check ball valve. Once the engine starts or during warm engine starts, the check ball closes and the high-pressure oil pump receives filtered oil from the high-pressure oil pump reservoir. The high-pressure oil pump pumps the oil under extremely high pressures (4,115-20,577 kPa [600-3,000 psi]) through the left and right side high-pressure supply hoses to the high-pressure oil rails (integral to the cylinder heads). Once in the oil rail, the oil is fed to the fuel injector bores through four oil feed galleries drilled and machined in the cylinder head. The high-pressure oil then actuates the fuel injectors.
3 — Anti-drain check ball cap (part of 6658)
4 — O-ring seal (part of 6658)
5 — Spring (part of 6658)
6 — Check ball (part of 6658)
If you stretch it and get it too stiff there is a chance the LPOP wont feed the HPOP on startup.
HPOP
uring initial start or cold start, the high-pressure oil pump (6600) receives unfiltered oil from the left side valve lifter oil gallery through the anti-drain back check ball valve. Once the engine starts or during warm engine starts, the check ball closes and the high-pressure oil pump receives filtered oil from the high-pressure oil pump reservoir. The high-pressure oil pump pumps the oil under extremely high pressures (4,115-20,577 kPa [600-3,000 psi]) through the left and right side high-pressure supply hoses to the high-pressure oil rails (integral to the cylinder heads). Once in the oil rail, the oil is fed to the fuel injector bores through four oil feed galleries drilled and machined in the cylinder head. The high-pressure oil then actuates the fuel injectors.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
Originally Posted by 357fhp
Hi All
It went down a pint over night.
Do you replace the spring or stretch it like we used to the oil pressure springs on the old 292 and 312's to increase the oil pressure.
It went down a pint over night.
Do you replace the spring or stretch it like we used to the oil pressure springs on the old 292 and 312's to increase the oil pressure.
