and ground the valves. but still has low oil,could the afm have anything to do with this
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2007 Chevrolet Silverado 1500 Question: 07 chev truck had low oil pressure. pulled motor put new oil pump,rings,bearings
Answer #1pushrod July 30, 2013, 08:38Master
Did you check the actual pressure with a manual test gauge, before and after repair attempt?
Replyrandy 2007, July 30, 2013, 08:48Rookie
put new sending unit on before. checked after rebuild low oil pressure ....at bottom and top motor had 280k .
Replypushrod, July 30, 2013, 09:13Master
What engine, by the way?
Replyrandy 2007, July 30, 2013, 09:43Rookie
5.3 m block
Replypushrod, July 30, 2013, 10:02Master
How much pressure does it have @ idle?
Replyrandy 2007, July 30, 2013, 10:28Rookie
MAYBE 10 .WOULD THE AFM BE BLEADING OFF TO MUCH OIL ???
Replypushrod, July 30, 2013, 10:38Master
That is acceptable pressure on idle! I have seen as low as 8 psi out of a well running engine!! Engine making any noise? Pressure increase with throttle? Define AFM?
Replyrandy 2007, July 30, 2013, 11:11Rookie
LIFTERS .NO INCREASE IN PRESSURE... AFM IS WHERE THE ENGINE BLEAds OFF OIL I THINK ITS 1,2,4&7 active fuel managment
Replypushrod, July 30, 2013, 11:20Master
Don't make sense unless oil pump relief valve is defective. This system does run at lower pressures, but should increase with rpm. If you figure it out, post results for others.
Replydonandmax, December 06, 2013, 23:50Rookie
I had low oil pressure, very low in my 2005 10 psi, checked all the things advised to you, I finally fixed it,I think I read about this problem a couple of years ago. The problem is in the engines oil pickup tube. Chevy changed to a cam lob in the front of the engine to operate the pump, then they ran the pickup tube to the back of the engine pan. I removed the oil pan, pulled the pickup tube, they used an O ring to seal it but if apparently gets hard and loses it sealing ablilities which causes the engine pump to cavitate. So I put a new O ring in along with red sealant. It works great now and I have good oil pressure. My advice is to add the sealant with a new O ring. Don
what about the cam bearings,did you repl them
Replyrandy 2007, July 30, 2013, 09:02Rookie
yes .. block was hot tanked..