Help! No oil pressure!

[Pete Masterson]

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?
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

[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?
>>
>> ------------------------------------
>>
>> Yahoo! Groups Links
>>
>>
>>
>
>

[erniecarpet@...]

IF-- big if, I tried to start my old engine without the block heater, the EPA would be after me for sure. The poor thing just about dies before she catches on.

Ernie Ekberg
83PT40
Weatherford, Texas

---

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[Don Bradner]

I never do a cold start. Cranks too long, blows too much smoke. I typically turn
the block heater on as soon as I'm up on a travel morning, and since we aren't
quick starters that means a couple of hours of heat, with an engine at or above
100 degrees at start. I always have pressure at start. That's sort of a
non-answer, but it sounds like you are in a position to test the theory - start
it warm, start it cold.

Don Bradner
90 PT40 "Blue Thunder"
Posting today by park WiFi near Marion, NC
My location: http://www.bbirdmaps.com/user2.cfm?user=1

On 10/12/2008 at 5:31 PM Ryan Wright wrote:

>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?
>>>
>>> ------------------------------------
>>>
>>> Yahoo! Groups Links
>>>
>>>
>>>
>>
>>
>
>------------------------------------
>
>Yahoo! Groups Links
>
>
>

Don Bradner
90 PT40 "Blue Thunder"
My location: http://www.bbirdmaps.com/user2.cfm?user=1

[Leroy Eckert]

Mine will cold start in 20 degree weather with a light puff of white smoke. In summer no white smoke at all. In the cold start the gauge reads within 5 seconds. Oil psi on the freeway at 1800 rpm= 65psi. High idle around 40 psi., hot idle 10-15psi. Hot idle defined as oil temp around 220. I had a faulty oil pressure sender 2 years ago giving goofy readings and it quit on the road. Changed it out and all has been fine since. The first new one was just as bad as the old one. The second new on is still on the bus. Just back from 5 days in the mountains. Cool and nice. Sat antenna will not lock on to Sat 110. No football this weekend. Texas kicked butt. Love it. Go Gators. Leroy Eckert 1990 WB-40 Smoke N Mirrors Dahlonega, GA --- On Sun, 10/12/08, Ryan Wright wrote: From: Ryan Wright Subject: Re: [WanderlodgeForum] Re: Help! No oil pressure! To: WanderlodgeForum@yahoogroups.com Date: Sunday, October 12, 2008, 8:31 PM 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 <"aeonix1%40mac.com"> 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%40mac.com" > 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%40yahoo.com"> wrote: >>> Ryan, >>> >>> Do you have a oil pressure guage in the engine compartment by the >>> rear >>> starter switch? What does that one say? >> >> ------------ --------- --------- ------ >> >> Yahoo! Groups Links >> >> >> > >

[Ryan Wright]

Thanks for the numbers, Leroy. This sounds more like what I remember
seeing the last time I took the coach out. I'm betting I have a flaky
sending unit. I'll install a mechanical gauge in the engine
compartment as a backup and to double-check, then replace the sending
unit.

Appreciate everyone's help, as always.

-Ryan
'86 PT-40 8V92

On Mon, Oct 13, 2008 at 8:16 AM, Leroy Eckert wrote:
> Mine will cold start in 20 degree weather with a light puff of white smoke.
> In summer no white smoke at all. In the cold start the gauge reads within 5
> seconds. Oil psi on the freeway at 1800 rpm= 65psi. High idle around 40
> psi., hot idle 10-15psi. Hot idle defined as oil temp around 220.
> I had a faulty oil pressure sender 2 years ago giving goofy readings and it
> quit on the road. Changed it out and all has been fine since. The first new
> one was just as bad as the old one. The second new on is still on the bus.
> Just back from 5 days in the mountains. Cool and nice.
> Sat antenna will not lock on to Sat 110. No football this weekend.
> Texas kicked butt. Love it. Go Gators.
> Leroy Eckert
> 1990 WB-40 Smoke N Mirrors
> Dahlonega, GA

[Leroy Eckert]

On the electrical gauge sender do not use any dope or tape. It can cause bad readings. That per the Teleflex site. Leroy Eckert 1990 WB-40 Smoke N Mirrors Dahlonega, GA Royale Conversion --- On Mon, 10/13/08, Ryan Wright wrote: From: Ryan Wright Subject: Re: [WanderlodgeForum] Re: Help! No oil pressure! To: WanderlodgeForum@yahoogroups.com Date: Monday, October 13, 2008, 12:14 PM Thanks for the numbers, Leroy. This sounds more like what I remember seeing the last time I took the coach out. I'm betting I have a flaky sending unit. I'll install a mechanical gauge in the engine compartment as a backup and to double-check, then replace the sending unit. Appreciate everyone's help, as always. -Ryan '86 PT-40 8V92 On Mon, Oct 13, 2008 at 8:16 AM, Leroy Eckert <"jwasnewski%40yahoo.com"> wrote: > Mine will cold start in 20 degree weather with a light puff of white smoke. > In summer no white smoke at all. In the cold start the gauge reads within 5 > seconds. Oil psi on the freeway at 1800 rpm= 65psi. High idle around 40 > psi., hot idle 10-15psi. Hot idle defined as oil temp around 220. > I had a faulty oil pressure sender 2 years ago giving goofy readings and it > quit on the road. Changed it out and all has been fine since. The first new > one was just as bad as the old one. The second new on is still on the bus. > Just back from 5 days in the mountains. Cool and nice. > Sat antenna will not lock on to Sat 110. No football this weekend. > Texas kicked butt. Love it. Go Gators. > Leroy Eckert > 1990 WB-40 Smoke N Mirrors > Dahlonega, GA

[Gregory OConnor]

Ryan, you may want to check ohms into the harness at idle from the
sensor and ohms out of the harness at idle at the dash to see that
they match. if not that may prove a wire issue and not a hard part.

I remember Leroy wrestling with the sender and gauge not matching
signal so that is also a point to consider if you just replace one
or the other part.

I wonder if someting as simple as teflon tape could prove issue in
reading, would a 'removal and cleaning' of the sender (RalphF
montra) not be a prudent first step.
Greg94pta

--- In WanderlodgeForum@yahoogroups.com, "Ryan Wright"
wrote:
>
> Thanks for the numbers, Leroy. This sounds more like what I
remember
> seeing the last time I took the coach out. I'm betting I have a
flaky
> sending unit. I'll install a mechanical gauge in the engine
> compartment as a backup and to double-check, then replace the
sending
> unit.
>
> Appreciate everyone's help, as always.
>
> -Ryan
> '86 PT-40 8V92
>
> On Mon, Oct 13, 2008 at 8:16 AM, Leroy Eckert
wrote:
> > Mine will cold start in 20 degree weather with a light puff of
white smoke.
> > In summer no white smoke at all. In the cold start the gauge
reads within 5
> > seconds. Oil psi on the freeway at 1800 rpm= 65psi. High idle
around 40
> > psi., hot idle 10-15psi. Hot idle defined as oil temp around 220.
> > I had a faulty oil pressure sender 2 years ago giving goofy
readings and it
> > quit on the road. Changed it out and all has been fine since.
The first new
> > one was just as bad as the old one. The second new on is still
on the bus.
> > Just back from 5 days in the mountains. Cool and nice.
> > Sat antenna will not lock on to Sat 110. No football this
weekend.
> > Texas kicked butt. Love it. Go Gators.
> > Leroy Eckert
> > 1990 WB-40 Smoke N Mirrors
> > Dahlonega, GA
>

[Leroy A. Eckert]

--- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
wrote:
>
You can go here for a gauge system test directive.
http://www.downloadingfiles.co.uk/telefl...stems.pdf.
There should be ohm references on the site.
There is a cross reference in the files for part numbers.
Leroy Eckert
1990 WB-40 Smoke N Mirrors
Dahlonega, GA


> Ryan, you may want to check ohms into the harness at idle from the
> sensor and ohms out of the harness at idle at the dash to see that
> they match. if not that may prove a wire issue and not a hard part.
>
> I remember Leroy wrestling with the sender and gauge not matching
> signal so that is also a point to consider if you just replace one
> or the other part.
>
> I wonder if someting as simple as teflon tape could prove issue in
> reading, would a 'removal and cleaning' of the sender (RalphF
> montra) not be a prudent first step.
> Greg94pta
>
> --- In WanderlodgeForum@yahoogroups.com, "Ryan Wright"
> wrote:
> >
> > Thanks for the numbers, Leroy. This sounds more like what I
> remember
> > seeing the last time I took the coach out. I'm betting I have a
> flaky
> > sending unit. I'll install a mechanical gauge in the engine
> > compartment as a backup and to double-check, then replace the
> sending
> > unit.
> >
> > Appreciate everyone's help, as always.
> >
> > -Ryan
> > '86 PT-40 8V92
> >
> > On Mon, Oct 13, 2008 at 8:16 AM, Leroy Eckert
> wrote:
> > > Mine will cold start in 20 degree weather with a light puff of
> white smoke.
> > > In summer no white smoke at all. In the cold start the gauge
> reads within 5
> > > seconds. Oil psi on the freeway at 1800 rpm= 65psi. High idle
> around 40
> > > psi., hot idle 10-15psi. Hot idle defined as oil temp around 220.
> > > I had a faulty oil pressure sender 2 years ago giving goofy
> readings and it
> > > quit on the road. Changed it out and all has been fine since.
> The first new
> > > one was just as bad as the old one. The second new on is still
> on the bus.
> > > Just back from 5 days in the mountains. Cool and nice.
> > > Sat antenna will not lock on to Sat 110. No football this
> weekend.
> > > Texas kicked butt. Love it. Go Gators.
> > > Leroy Eckert
> > > 1990 WB-40 Smoke N Mirrors
> > > Dahlonega, GA
> >
>

[Leroy A. Eckert]

--- In WanderlodgeForum@yahoogroups.com, "Leroy A. Eckert"
wrote:

Sorry:
http://www.downloadingfiles.co.uk/telefl...gauges/Oil Pressure
Systms.pdf
>Maybe that will work, it is space sensitive.
Leroy in GA
> --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
> wrote:
> >
> You can go here for a gauge system test directive.
>
http://www.downloadingfiles.co.uk/telefl...stems.pdf.
> There should be ohm references on the site.
> There is a cross reference in the files for part numbers.
> Leroy Eckert
> 1990 WB-40 Smoke N Mirrors
> Dahlonega, GA
>
>
> > Ryan, you may want to check ohms into the harness at idle from the
> > sensor and ohms out of the harness at idle at the dash to see that
> > they match. if not that may prove a wire issue and not a hard part.
> >
> > I remember Leroy wrestling with the sender and gauge not matching
> > signal so that is also a point to consider if you just replace one
> > or the other part.
> >
> > I wonder if someting as simple as teflon tape could prove issue in
> > reading, would a 'removal and cleaning' of the sender (RalphF
> > montra) not be a prudent first step.
> > Greg94pta
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Ryan Wright"
> > wrote:
> > >
> > > Thanks for the numbers, Leroy. This sounds more like what I
> > remember
> > > seeing the last time I took the coach out. I'm betting I have a
> > flaky
> > > sending unit. I'll install a mechanical gauge in the engine
> > > compartment as a backup and to double-check, then replace the
> > sending
> > > unit.
> > >
> > > Appreciate everyone's help, as always.
> > >
> > > -Ryan
> > > '86 PT-40 8V92
> > >
> > > On Mon, Oct 13, 2008 at 8:16 AM, Leroy Eckert
> > wrote:
> > > > Mine will cold start in 20 degree weather with a light puff of
> > white smoke.
> > > > In summer no white smoke at all. In the cold start the gauge
> > reads within 5
> > > > seconds. Oil psi on the freeway at 1800 rpm= 65psi. High idle
> > around 40
> > > > psi., hot idle 10-15psi. Hot idle defined as oil temp around 220.
> > > > I had a faulty oil pressure sender 2 years ago giving goofy
> > readings and it
> > > > quit on the road. Changed it out and all has been fine since.
> > The first new
> > > > one was just as bad as the old one. The second new on is still
> > on the bus.
> > > > Just back from 5 days in the mountains. Cool and nice.
> > > > Sat antenna will not lock on to Sat 110. No football this
> > weekend.
> > > > Texas kicked butt. Love it. Go Gators.
> > > > Leroy Eckert
> > > > 1990 WB-40 Smoke N Mirrors
> > > > Dahlonega, GA
> > >
> >
>