RRC EFI 3,9 oil pump priming issue

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roule35
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RRC EFI 3,9 oil pump priming issue

Post by roule35 »

Hi,

Going forward with my rebuild (new cam and lifters) i'm stuck with my oil pump.

I checked clearance and gasket thickness before setting. I tried to prime with an electric drill...without success. i have pressure on the oil cooler exit (i put a bypass valve) so i imagine the sump filter is ok. But it's emulsified oil coming out ! mean something is clogged ?

and I have no oil from the sender hole...

my head gasket is a composite one (elring) with holes for the oilways .

I think (but not sure now) i have the good front timing gasket.

What is my issue ??
Oil pump issue.jpg


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Ian Anderson
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Re: RRC EFI 3,9 oil pump priming issue

Post by Ian Anderson »

Bypass valve fitted wrong way around so oil cannot get through?
Ian
Owner of an "On the Road" GT40 Replica by DAX powered by 3.9Hotwre Efi, worked over by DJ Motors. EFi Working but still does some kangaroo at low revs (Damn the speed limits) In to paint shop 18/03/08.
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roule35
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Re: RRC EFI 3,9 oil pump priming issue

Post by roule35 »

I mentioned oil comes through this side...The question is why i have no oil at all on the pressure sensor side.
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Ian Anderson
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Re: RRC EFI 3,9 oil pump priming issue

Post by Ian Anderson »

If you remove your cooler bypass and just use a standard filter does the system work?

If it does the the problem is in the bypass or bypass circuit.

Emulsified normally means there was some moisture in the system which got smashed up with oil in the pump….. not major if this is only start up oil which will soon be drained and discarded.

Ian
Owner of an "On the Road" GT40 Replica by DAX powered by 3.9Hotwre Efi, worked over by DJ Motors. EFi Working but still does some kangaroo at low revs (Damn the speed limits) In to paint shop 18/03/08.
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roule35
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Re: RRC EFI 3,9 oil pump priming issue

Post by roule35 »

I added 4 liters of oil, still nothing...it only comes out through the intercooler connection. I'm going to remove the relief valve and try again...

I wonder if an air leak at the feet of the rocker arm shaft (deformation / very malleable aluminum), the oil circulating there, could be the source of my pressure problems. I'm also going to drop off an arm to see if the oil comes up that far...
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roule35
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Re: RRC EFI 3,9 oil pump priming issue

Post by roule35 »

News:

After connecting the 2 hoses of the oil radiator, and bleeding what air I could, I managed to get a pressure of 30 psi at 2000 rpm on my drill. This seems very correct to me. I get this pressure after about ten seconds. The resistance on the drill is not very high (I thought I read that it was more than that) and the oil rises well to the rocker arm ramps. On the other hand, I don't see the oil squirting, it's more of a light trickle of oil...
Only small concern: the 2 pump gears squeal (squeak) a little: too much play? problem with oil circulation in the pump?
Any advice or recommendations before I reassemble the radiator and fan? everything seems correct to you?
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