I've had MGA's and MGB's for 30 years. Oil pressure bounce is nothing to
worry about. Most all of them do it some of the time.
Don Scott
At 09:17 PM 11/19/98 EST, you wrote:
>Mike,
> Let me know if you find the cause of the pressure bounce.
> My GT does much the same thing at times. At idle it will sometimes (not
>always) bounce between 45-60, rather rhythmically. It's been doing this
>for the last couple of years, so (fingers crossed) nothing major.
> i've gone through all the lines, coolers, filters,etc. Even changed the
>pressure relief valve and spring. Still does it.
> I have noticed that it seems to be more prevalent when an oil change is
>coming due.
> Could it be the engine is reminding me?
>
>Rick Morrison
>72 MGBGT
>74 Midget
>
>On Thu, 19 Nov 1998 02:10:50 -0500 "Mike Lishego"
><mikesl@tartan.sapc.edu> writes:
>>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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