Engine won't return oil when hot????
Seasoned HDF Member
Joined: Aug 2008
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From: Ohio
Is it slobbering oil?
Elite HDF Member
Joined: Sep 2007
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From: Bluffton, South Carolina
Ok re-read the post. If the parts were replaced correctly and all the oil lines and passages were checked to ensure that they were all clear then it should work fine. However it isn't, so I would re-check everything to ensure the above facts are correct. Then I wold probably replace at least the return line to ensure there isn't a piece of rubber acting as a flap valve (I've deen this twice in the last 50 years) that is closing off the line. Additionally I woul also replace the filter and check the oil tank. Hope this helps.
John
John
Seasoned HDF Member
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From: Coromandel Peninsula New Zealand
And as was perviously mentioned....when the oil tank is empty you need to do some checks to see where the oil has gone.....if its in the primary the seal is gone, if its in the sump then you may have a pick up issue....is the gear key in the gear that takes oil pump drive from the crankshaft intact....is the key in the crank gear OK.....you MUST check these!!
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From: Honah Lee
Spanner, were are these umbrella valves that are mentioned for an EVO in this thread? I understand the are under the valve covers in a small chamber with baffles and a mesh web to help catch liquid oil and are one way out for venting crank case gasses that get by the pistons rings and of course when the piston come down the air displaced in the crank case on my TCb but I did not think EVOs had them in the heads..
Last edited by Jackie Paper; Sep 14, 2018 at 11:14 AM.
Elite HDF Member
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From: People's Republic of Boulder Colorado
Spanner, were are these umbrella valves that are mentioned for an EVO in this thread? I understand the are under the valve covers in a small chamber with baffles and a mesh web to help catch liquid oil and are one way out for venting crank case gasses that get by the pistons rings and of course when the piston come down the air displaced in the crank case on my TCb but I did not think EVOs had them in the heads..
Seasoned HDF Member
Joined: Dec 2010
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From: Coromandel Peninsula New Zealand
Later Evo's have them, earlier ones breathe the through crankcase. Evo's don't have the gauze filter like a TC.
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Stellar HDF Member
Joined: Mar 2009
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From: Graysville, AL
Is it slobbering oil?
Are you using a T/C filter or Evo? I've heard of T/C filters not letting oil pass on Evo low pressure.
Then I wold probably replace at least the return line to ensure there isn't a piece of rubber acting as a flap valve (I've deen this twice in the last 50 years) that is closing off the line. Additionally I woul also replace the filter and check the oil tank. Hope this helps.
He said this problem started happening when the stator burnt up and he replaced it.
Thanks for all the info!!
Elite HDF Member
Joined: Jun 2007
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From: People's Republic of Boulder Colorado
OK, it seems to me that the crankcase won't hold 3+ qts of oil that's pumped in but not out. It would have to be being dumped out of the engine somewhere, but it's supposedly back in the tank when he starts it cold.
If he keeps filling the tank up and then it's empty after 100 miles, where's all that oil going?
Also, he said the oil pump was replaced, but did the tech inspect both the pressure AND scavenger pumps to make sure they were assembled correctly with no broken/sheared keys etc? That's the only thing that makes sense. I can't see how replacing a fried stator could be related to this problem.
If he keeps filling the tank up and then it's empty after 100 miles, where's all that oil going?
Also, he said the oil pump was replaced, but did the tech inspect both the pressure AND scavenger pumps to make sure they were assembled correctly with no broken/sheared keys etc? That's the only thing that makes sense. I can't see how replacing a fried stator could be related to this problem.
Last edited by jpooch00; Jan 15, 2013 at 02:41 PM.