No oil pressure
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Pro
Joined: Oct 2005
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From: SpringHill Florida
No oil pressure
Brand new engine finally fired up after two weeks of chasing elect gremlin and having my car dropped and damaged by the towing service but does not show oil pressure and lifters are starving.Anyone know a trick to prime oil pump? Can't take much more of this I started looking at Mustangs aghhh!!!!!
Thread Starter
Pro
Joined: Oct 2005
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From: SpringHill Florida
Oil pressure falling off at Idle
Finally have oil pressure but it drops off at idle to cause the dic to light up check guages and low oil pressure. Engine will not go above 40psi and have not pushed it over 2000 rpm.I am running Mobil 1 in this engine and wonder if I should have run regular oil in it to break in?
Pro
Joined: Feb 2004
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From: michigan
Are all the plugs in? There should be one in the back on the left side of the engine. Looks like a bar bell its white and is held in by the rear engine cover. All you can see is the end of it though. Then there is also one under the front cover near the oil pump. It looks like a small freeze plug about 1/2 inch in diameter. Most people JB weld it in. There is also an external plug for priming the engine but I m assuming you have no oil leaks. Also make sure you put your oil pump O ring on the pick up tube and make sure it did not get pinched. I had mine get pinched. On a new motor you should have about 40 psi at idle if you have a good oil pump. You should also use regular oil for break in.
Last edited by chriskaw7r; Jan 16, 2006 at 12:01 PM.
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Thread Starter
Pro
Joined: Oct 2005
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From: SpringHill Florida
Still no change
Is the o ring on the pickup tube in the block as we did not see one when we switched the tubes. nothing came out with the old tube or the new one.My son said he oiled the pickup tube and experienced a slight resistance when he inserted it in its location.could it be sucking air at that point? Can the pan be dropped without engine removal? Do you think it is worth a look? This was not a rebuilt engine but a factory drop in Ls1 Camaro/firebird set up. the only changes made were intake,balancer, oil p/u tube and pan.
Pro
Joined: Feb 2004
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From: michigan
The O ring should definantly be on the pick-up tube and yes this could be your problem. What happens when you pull the pick up tube off the oring stays in the pump. Then when you install the tube back in the pump it drives the o ring into the pump and not onto the tube. The O ring should be installed on the tube all the way up to the shoulder. With the new engine did it already have the rear cover installed. You should not need to drop the pan but you will have to access the oil pump. This deffinantly sounds like your problem to me.
Last edited by chriskaw7r; Jan 16, 2006 at 09:09 PM.
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From: SpringHill Florida
As delivered the rear cover was in place. It must be the o ring as we did not see it at all when we switched tubes. Thanks for the help I will have to plan my next move as to getting at it.
Pro
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From: michigan
Originally Posted by NEVERL8C5
As delivered the rear cover was in place. It must be the o ring as we did not see it at all when we switched tubes. Thanks for the help I will have to plan my next move as to getting at it.
Drifting
Joined: Jan 2005
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From: Spring Hill, Florida Life is all about new beginnings;...TRY ONE!
St. Jude Donor '07-'08
Originally Posted by dpd
synthetic is not good to help the rings seat during break-in
Drifting
Joined: Oct 2003
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From: bloomfield nj
Originally Posted by RatedX
Then how are are new Corvettes from the factory broken in since they come with Mobil One?
they are broken in on mineral and the oil is changed before being sent out
Drifting
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From: bloomfield nj
Originally Posted by chriskaw7r
The O ring should definantly be on the pick-up tube and yes this could be your problem. What happens when you pull the pick up tube off the oring stays in the pump. Then when you install the tube back in the pump it drives the o ring into the pump and not onto the tube. The O ring should be installed on the tube all the way up to the shoulder. With the new engine did it already have the rear cover installed. You should not need to drop the pan but you will have to access the oil pump. This deffinantly sounds like your problem to me.
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Joined: Oct 2005
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From: SpringHill Florida
We Have Pressure
Good news we now have 45psi at idle the o ring that seals the pickup tube in the oil pan was cut in 3 pieces preventing complete suction. If any one ever goes this far into your engine make sure you install the o ring as stated in chriskaw7r response.All the way to the shoulder of the tube then insert into pump. I also changed my mind and dropped the pan, it actually is less work dropping the engine cradle while supporting the engine than going at it from the front.From an engineering stand point these cars are actually easy to work on with the exception of the low stance. If you get it high enough it is just nuts and bolts. Thanks for all the responses I hope I will be able to do the same for someone someday.
Pro
Joined: Feb 2004
Posts: 657
Likes: 1
From: michigan
Originally Posted by NEVERL8C5
Good news we now have 45psi at idle the o ring that seals the pickup tube in the oil pan was cut in 3 pieces preventing complete suction. If any one ever goes this far into your engine make sure you install the o ring as stated in chriskaw7r response.All the way to the shoulder of the tube then insert into pump. I also changed my mind and dropped the pan, it actually is less work dropping the engine cradle while supporting the engine than going at it from the front.From an engineering stand point these cars are actually easy to work on with the exception of the low stance. If you get it high enough it is just nuts and bolts. Thanks for all the responses I hope I will be able to do the same for someone someday.