NO oil pressure, please help
Thread Starter
Staging Lane
Joined: Mar 2005
Posts: 67
Likes: 0
From: Franklin,VA
NO oil pressure, please help i hope someone knows whats going on with my car because i sure don't at this point. ok so here's the situation:
i rebuilt the engine about 15000 miles ago and i have a melling HV pump, cant remember what model, 10550 maybe? ive had no problem with oil pressure until about maybe 2 months ago. when i stopped kinda hard the pressure would drop to zero real quick then it would pick back up. the other morning i had just started driving down the road and my light came on and the gauge said zero.
i pulled over and checked the oil and it was fine. nothing was making any noise under the hood so i drove like a grandma for about a mile or two until i heard the roller rockers chatting so i pulled over and cut it off.
summit tech told me it sounded like the pickup tube so i pulled the pan and sure enough, the pickup had fallen out.
i got a new pickup tube and had it pressed it and spot welded on the pump.
i checked the pump before putting it back in and it seemed fine, gears seemed smooth. got the car put all back together and STILL no oil pressure. i replaced the oil pressure sensor about a year ago so i dont think thats the problem. i let it run for a minute without pressure and the roller rockers were still chatting.
someone told me my main bearings might have spun? i didnt run it much at all though. sorry this is so long i just wanted to add all the details, someone please help me out!
i rebuilt the engine about 15000 miles ago and i have a melling HV pump, cant remember what model, 10550 maybe? ive had no problem with oil pressure until about maybe 2 months ago. when i stopped kinda hard the pressure would drop to zero real quick then it would pick back up. the other morning i had just started driving down the road and my light came on and the gauge said zero.
i pulled over and checked the oil and it was fine. nothing was making any noise under the hood so i drove like a grandma for about a mile or two until i heard the roller rockers chatting so i pulled over and cut it off.
summit tech told me it sounded like the pickup tube so i pulled the pan and sure enough, the pickup had fallen out.
i got a new pickup tube and had it pressed it and spot welded on the pump.
i checked the pump before putting it back in and it seemed fine, gears seemed smooth. got the car put all back together and STILL no oil pressure. i replaced the oil pressure sensor about a year ago so i dont think thats the problem. i let it run for a minute without pressure and the roller rockers were still chatting.
someone told me my main bearings might have spun? i didnt run it much at all though. sorry this is so long i just wanted to add all the details, someone please help me out!
Sorry guy, sounds like bad news. First check with a mechanical oil guage to see if your having low oil pressure, but chattering noise from the valvetrain is not a good sign. Good luck with your engine.
Like siniSSster said, your first move should be hooking up a mechanical guage to confirm lack of oil pressure. From the sound of things I don't believe you spun a bearing. Did you take the pump apart before spot welding the pick up? The heat from welding can weaken the spring causing a lack of oil pressure.
If you spun a bearing you would know it!
Nosy valvetrain is just from the low oil press.
I say check the spring in the relief it could have been over heated or it could have broke or gotten stuck.
Deffinately check witha mechanical gage.
Nosy valvetrain is just from the low oil press.
I say check the spring in the relief it could have been over heated or it could have broke or gotten stuck.
Deffinately check witha mechanical gage.
I ended up blowing up my first engine because the drive gear off the cam stripped. (the one that is at the base of the dist. on a normal small block)
I would pop the intake off and visually check that oil pump drive gear.
I would pop the intake off and visually check that oil pump drive gear.
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Staging Lane
Joined: Mar 2005
Posts: 67
Likes: 0
From: Franklin,VA
as far as i can tell nothing else is wrong with the engine. i didnt pull any bearings to check. there was still plenty of oil under the intake when i took it off. i'm just going to get another oil pump drive gear and go with that.