Yanmar generator oil pressure

[Scott Forman]

I took a day-trip yesterday that had the generator running for about 16
hours straight. On my way home, the oil pressure gauge for the gen
engine began reading very high, almost pegged to the right. While I
know what low oil press can do to an engine, I have never really heard
any talk of whether high oil pressure is a big problem. Is it? If it
is a true problem and not an instrument issue, what is the likely
cause? It may well be the gauge, when I turned the gen off, the press
gauge only retreated about half way. I checked the oil before leaving
yesterday and it was fine. Have not done any investigating yet this
morning. The gen seemed to be running perfectly otherwise, the water
temp was fine and there were no odd sounds, smells, etc.

Ideas?

Scott Forman
86 PT38

[bloomas]

----- Original Message -----
From: Scott Forman
To: WanderlodgeForum@yahoogroups.com
Sent: Sunday, June 03, 2007 10:02 AM
Subject: [WanderlodgeForum] Yanmar generator oil pressure
Scott I would replace the gage if it is not zeroing out
while the engine is shut down I would have to take a hard look at the gage.
Bob Loomas 1985 PT 36



I took a day-trip yesterday that had the generator running for about 16
hours straight. On my way home, the oil pressure gauge for the gen
engine began reading very high, almost pegged to the right. While I
know what low oil press can do to an engine, I have never really heard
any talk of whether high oil pressure is a big problem. Is it? If it
is a true problem and not an instrument issue, what is the likely
cause? It may well be the gauge, when I turned the gen off, the press
gauge only retreated about half way. I checked the oil before leaving
yesterday and it was fine. Have not done any investigating yet this
morning. The gen seemed to be running perfectly otherwise, the water
temp was fine and there were no odd sounds, smells, etc.

Ideas?

Scott Forman
86 PT38





[Non-text portions of this message have been removed]

[Rob Robinson]

Might be preaching to the choir here but I would change out the complete
system.....sending unit and guage.

On 03/06/07, bloomas wrote:
>
>
> ----- Original Message -----
> From: Scott Forman
> To: WanderlodgeForum@yahoogroups.com
> Sent: Sunday, June 03, 2007 10:02 AM
> Subject: [WanderlodgeForum] Yanmar generator oil pressure
> Scott I would replace the gage if it is not zeroing out
> while the engine is shut down I would have to take a hard look at the
> gage.
> Bob Loomas 1985 PT 36
>
>
> I took a day-trip yesterday that had the generator running for about 16
> hours straight. On my way home, the oil pressure gauge for the gen
> engine began reading very high, almost pegged to the right. While I
> know what low oil press can do to an engine, I have never really heard
> any talk of whether high oil pressure is a big problem. Is it? If it
> is a true problem and not an instrument issue, what is the likely
> cause? It may well be the gauge, when I turned the gen off, the press
> gauge only retreated about half way. I checked the oil before leaving
> yesterday and it was fine. Have not done any investigating yet this
> morning. The gen seemed to be running perfectly otherwise, the water
> temp was fine and there were no odd sounds, smells, etc.
>
> Ideas?
>
> Scott Forman
> 86 PT38
>
> [Non-text portions of this message have been removed]
>
>
>



--
Rob, Sue & Merlin Robinson
94 WLWB


[Non-text portions of this message have been removed]

[pattypape]

Good advice,

Sounds like the gage, then the sensor must match up,
Test and replace both.

A good gage test guide is on the Teleflex web site.

http://www.teleflexmarine.com/cgi-bin/frameset2.cgi?
site=gauges&type=us&link2=1047

Bill 88 FC Michigan


--- In WanderlodgeForum@yahoogroups.com, "Rob Robinson"
wrote:
>
> Might be preaching to the choir here but I would change out the
complete
> system.....sending unit and guage.
>
> On 03/06/07, bloomas wrote:
> >
> >
> > ----- Original Message -----
> > From: Scott Forman
> > To: WanderlodgeForum@yahoogroups.com 40yahoogroups.com>
> > Sent: Sunday, June 03, 2007 10:02 AM
> > Subject: [WanderlodgeForum] Yanmar generator oil pressure
> > Scott I would replace the gage if it is not zeroing out
> > while the engine is shut down I would have to take a hard look at
the
> > gage.
> > Bob Loomas 1985 PT 36
> >
> >
> > I took a day-trip yesterday that had the generator running for
about 16
> > hours straight. On my way home, the oil pressure gauge for the gen
> > engine began reading very high, almost pegged to the right. While
I
> > know what low oil press can do to an engine, I have never really
heard
> > any talk of whether high oil pressure is a big problem. Is it? If
it
> > is a true problem and not an instrument issue, what is the likely
> > cause? It may well be the gauge, when I turned the gen off, the
press
> > gauge only retreated about half way. I checked the oil before
leaving
> > yesterday and it was fine. Have not done any investigating yet
this
> > morning. The gen seemed to be running perfectly otherwise, the
water
> > temp was fine and there were no odd sounds, smells, etc.
> >
> > Ideas?
> >
> > Scott Forman
> > 86 PT38
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
>
>
>
> --
> Rob, Sue & Merlin Robinson
> 94 WLWB
>
>
> [Non-text portions of this message have been removed]
>