Help! No oil pressure!

[Ryan Wright]

Thanks for the replies, folks. I pulled the coach forward about 30
feet Friday afternoon and the gauge began reading. I don't think it
was a loose wire, maybe the oil just needed to warm up? I don't ever
remember seeing 0psi on the gauge when cold, though, I'm sure it would
have alarmed me in the past and I'd have asked here if it were
supposed to be this way. Other 8V92 owners, what's your oil pressure
gauge do upon a cold start?

Other than showing 0psi for a few minutes after a cold start (repeated
after starting on Saturday & Sunday mornings, too), everything seemed
OK. Ran @ ~30psi on the freeway, high idled @ ~15psi. idle @ ~5psi.
Engine sounds beautiful... but I'm going to have to dig into this,
anyway, because it seems abnormal to me.

Appreciate the replies.

-Ryan
'86 PT-40 8V92

On Sat, Oct 11, 2008 at 8:10 AM, Pete Masterson wrote:
> About the only thing you can do is to install a mechanical oil
> pressure gauge on (or near) the engine. (I'd have to know a lot more
> about an 8v92 to tell you exactly where to install it -- but a diesel
> mechanic familiar with that engine could probably advise you.)
>
> My guess was that the oil was so cold that it didn't registers much
> pressure -- but if/when you revved up, then some pressure should have
> shown if the gauge was working. At idle, the 8v92 has a very low oil
> pressure.
>
> Ground straps work loose all the time due to vibration and are often
> a source of problems. Partial or intermittent contact can make it
> difficult to run down loose straps.
>
> Pete Masterson
> '95 Blue Bird Wanderlodge WBDA 42
> aeonix1@...
> On the road near Lancaster, PA
>
> On Oct 10, 2008, at 6:03 PM, Ryan Wright wrote:
>
>> Hi Mike,
>>
>> Nope, no gauge in the engine compartment, unfortunately.
>>
>> Pete: It's cold-cold... I turned the engine pre-heat on about half an
>> hour ago, so we'll see if that changes anything. She did start a bit
>> hard due to the cold. Maybe that's just it, oil is too cold to
>> register much pressure? I'll check the ground straps too.
>>
>> Without a working oil pressure gauge, is there any way to verify the
>> oil pump is doing it's job? The engine sounded just fine when I had it
>> running...
>>
>> -Ryan
>>
>> On Fri, Oct 10, 2008 at 2:39 PM, mbulriss <mbulriss@...> wrote:
>>> Ryan,
>>>
>>> Do you have a oil pressure guage in the engine compartment by the
>>> rear
>>> starter switch? What does that one say?
>>
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