The Ford Barn

Paul/Seattle · 10-25-2010, 10:29 PM

I've got 49 with a 49 8ba and all of a sudden the oil pressure gauge has started to fluctuate up and down. It doesn't move quickly it will slowly move from 60 down to 20 and back up again with the engine speed not changing. Where exactly is the oil pressure relief valve located? I read something about a valve in the lifter valley under the intake manifold but I always thought it was part of the oil pump. Thanks for any help.

Ronnie · 10-25-2010, 10:47 PM

8ba is in the pump

51 MERC-CT · 10-26-2010, 12:48 PM

It could be the sender or the gauge. Install a temporary mechanical gauge to confirm before tearing into the engine

Russ/40 · 10-26-2010, 04:26 PM

Sponsored Links (Register now to hide all advertisements)

Agreed, your problem could very well be an electrical problem. The check valves, just don't fail.

10-25-2010, 10:29 PM	#1
Paul/Seattle Junior Member Join Date: May 2010 Location: Seattle Posts: 20	Oil pressure relief valve I've got 49 with a 49 8ba and all of a sudden the oil pressure gauge has started to fluctuate up and down. It doesn't move quickly it will slowly move from 60 down to 20 and back up again with the engine speed not changing. Where exactly is the oil pressure relief valve located? I read something about a valve in the lifter valley under the intake manifold but I always thought it was part of the oil pump. Thanks for any help.

10-25-2010, 10:47 PM	#2
Ronnie Senior Member Join Date: May 2010 Location: Canada Where it snows Posts: 2,058	Re: Oil pressure relief valve 8ba is in the pump

10-26-2010, 12:48 PM	#3
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: Oil pressure relief valve It could be the sender or the gauge. Install a temporary mechanical gauge to confirm before tearing into the engine

10-26-2010, 04:26 PM	#4
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Re: Oil pressure relief valve Sponsored Links (Register now to hide all advertisements) Agreed, your problem could very well be an electrical problem. The check valves, just don't fail.