No oil pressure after H/C swap, help!
06-02-2007, 12:45 AM
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No oil pressure after H/C swap, help! This was done to my project truck with all the gauges, I have a temp and oil pressure gauge connected.
So I flycut pistons, swap cam - Torquer 2, CNC ported 853 heads, pushrods, new LS6 oil pump, dual chain with spacers, TSP UD pulley, injectors and got the PCM a mail order tune. I was very careful with the oil pickup tube o-ring, I installed to PU tube then placed the oil pump over the tube while my boy pushed the tube down.
Tried to prime the engine after and got no pressure, then started for 5 seconds no pressure, shut everything down.
What could be causing this?
I don't have all gauges connected however I do have a oil pressure gauge connected to the connection in the back of the engine. Should I try another oil pressure gauge?
Help please.
So I flycut pistons, swap cam - Torquer 2, CNC ported 853 heads, pushrods, new LS6 oil pump, dual chain with spacers, TSP UD pulley, injectors and got the PCM a mail order tune. I was very careful with the oil pickup tube o-ring, I installed to PU tube then placed the oil pump over the tube while my boy pushed the tube down.
Tried to prime the engine after and got no pressure, then started for 5 seconds no pressure, shut everything down.
What could be causing this?
I don't have all gauges connected however I do have a oil pressure gauge connected to the connection in the back of the engine. Should I try another oil pressure gauge?
Help please.
06-02-2007, 01:02 AM
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Did it make a lot of noise when you started it, like lifters? Have you checked for oil either at the sensor or by removing a valve cover? Hopefully it's the gauge... Not that damn o ring...
06-02-2007, 01:06 AM
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Originally Posted by chuckyt1
Did it make a lot of noise when you started it, like lifters? Have you checked for oil either at the sensor or by removing a valve cover? Hopefully it's the gauge... Not that damn o ring...
Could it be the o-ring? how would I know if it was the o-ring?
06-02-2007, 01:15 AM
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If you're not getting oil to the top of the engine, it's usually the oil ring. Just going by what I've read on here with guys after cam swaps. It could even be just that the o ring is pinched. I've also read that an o ring should never be re-used, although I have re-used them without problem.
Is the gauge you're using mechanical?
Is the gauge you're using mechanical?
06-02-2007, 01:16 AM
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Originally Posted by chuckyt1
If you're not getting oil to the top of the engine, it's usually the oil ring. Just going by what I've read on here with guys after cam swaps. It could even be just that the o ring is pinched. I've also read that an o ring should never be re-used, although I have re-used them without problem.
Is the gauge you're using mechanical?
Is the gauge you're using mechanical?
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06-02-2007, 03:42 PM
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Could be the O-ring on the pick up tube is pinched. could also be the spacers for the Oil pump. They only go on one way, but will fit both ways. If you put them on wrong they will block the oil passages.
Didn't read the whole thing.