I have the same symptom on my 75 (no oil-cooler). I've heard other people
talk about it as well. It only happens to me when the oil is warming, but
not quite warmed up. I wouldn't worry about it as long as the pressure stays
up...
> -----Original Message-----
> From: Mike Lishego [mailto:mikesl@tartan.sapc.edu]
> Sent: Thursday, November 19, 1998 1:11 AM
> To: MG List
> Subject: Bouncing oil pressure - MGB
>
>
> Howdy all,
> Tonight while waiting in line at my favorite burger
> shack, I noticed a
> semi-disturbing problem on my MGB. When I had the car in
> neutral with the
> clutch out, the oil pressure would bounce from about 55 to
> 70, almost in
> time with the idle.
> When I put the clutch in, or the car was in gear and moving,
> the bounce went
> away.
> Here's my guesses...The I had the choke in and the car
> wasn't entirely
> warmed up. When I tried later in the night (when the car was
> warmer) it
> wouldn't do it. I'm guessing that the engine was running
> rough, causing the
> engine to rock back and forth. This might have put strain on
> the flexible
> oil hose, causing the pressure to jump up and down by about 15 pounds.
> Or, there could be something catastrophic about to take
> place in my
> engine when I'm in an economically disadvantaged area,
> leaving me stranded
> with one blown up MGB. The only sign I see that this won't
> happen is that
> the oil pressure is going up from it's standard of 50, not
> down. Not only
> that, the temp has stayed constant.
> I don't know if the car had just started this behavior; I
> do know that
> my burger was late, which led me to linger over each gauge a
> little longer.
> Bottom line, should I be worried?
>
> Michael S. Lishego
> http://www.geocities.com/MotorCity/Speedway/3706/
>
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