Reduced power and Reduced turbo boost

[Jay Darst]

How would I test the hoses for delamination? (other than the obvious-
replace them)

Has anyone ran into this and the fix was something other than the
filters or hose delamination?

Sure would appreciate suggestions...

Thanks
Jay Darst
85PT40 6V92
SpringfieldIL

RandyD?





--- In WanderlodgeForum@yahoogroups.com, "Jay Darst"
wrote:
> I think there were some posts on that a year or 2 ago.
>
> Good thought, Thanks.
>
> Jay Darst
> 85PT40 6V92
> SpringfieldIL
>
>
> --- In WanderlodgeForum@yahoogroups.com, "Mike Hohnstein"
> <MHOHNSTEIN@w...> wrote:
> > Some times them hoses delaminate, it's not good when that
> happens. I had problems that I suspected were due to old flexible
> line. I replaced it all, stuff wears out.
> > Mike Hohnstein
> > Germantown, WI
> > 83FC35
> > ----- Original Message -----
> > From: Jay Darst
> > To: WanderlodgeForum@yahoogroups.com
> > Sent: Monday, May 02, 2005 9:16 PM
> > Subject: [WanderlodgeForum] Re: Reduced power and Reduced
turbo
> boost
> >
> >
> > The "FUEL VACUUM" gage is now reading very high into the red,
> which
> > would indicate that the fuel pump is really having to work
(suck)
> to
> > pull fuel through the Racor.
> >
> > I would use air pressure to relieve any blockage in the fuel
> line
> > that connects the fuel tank to the Racor, but then how would
the
> > line be refilled so as to avoid air in the line?
> >
> > With the "FUEL VACUUM" gage reading an unusually high vacuum,
I
> am
> > fairly certain that this is a fuel delivery problem.
> >
> > So far, attempted repairs in chronological order:
> > 1.)replace Racor fuel filter
> > 2.)replace Spin-On fuel filter
> > 3.)Again, remove and inspect Racor filter, empty contents of
> Racor
> > filter, remove bottom half of Racor filter for inspection and
> > cleaning.
> >
> > It appears that the FUEL VACUUM gage is plumbed directly
aftter
> the
> > RACOR filter, which would place it between the RACOR and the
> SPIN-ON
> > fuel filter. That being the case, it would seem that by
removing
> the
> > contents of the RACOR, the FUEL VACUUM gage would read 0 since
> there
> > could would no longer be resistance, hence the RACOR filter
> canistor
> > is now empty.
> >
> > Replaced Racor filter, refilled with fuel and started engine.
> Runs a
> > bit un-even. Pretty sure its starving for fuel.
> >
> > HELP?!
> >
> > Thanks
> > Jay Darst
> > 85PT40 6V92
> > SpringfieldIL
> > --- In WanderlodgeForum@yahoogroups.com, John Suter
> > wrote:
> > > Jay,
> > >
> > > I do not want to be an alarmist, however check the
> > > castings and flanges which deliver the boost air to
> > > the engine (I think to the aftercooler) for cracks
> > > that permit pressure leaks. Just before FMCA I saw
> > > coach with symptoms that you describe, which delivered
> > > leaking hot exhaust air into combustible areas of the
> > > engine compartment. The cracked areas, once
> > > discovered, were barely visable behind the large fan
> > > but careful inspection permitted first a fingernail,
> > > then a knife blade to be inserted into the gaps.
> > >
> > > John Suter
> > >
> > >
> > >
> > > --- Jay Darst wrote:
> > > > Just returned from a 876 mile round trip to Elkhart
> > > > Lake, WI.
> > > >
> > > > Noticed the fuel vacuum gage in the red. So changed
> > > > Racor fuel
> > > > before heading back home. Still the gage read in the
> > > > RED. So, 1/3 of
> > > > the way home, changed the spin on fuel filter. Still
> > > > the gage read
> > > > in the RED.
> > > >
> > > > The gage seems to have always worked before.
> > > >
> > > > Before and after changing the Racor filter and
> > > > subsequently the spin
> > > > on fuel filer, my boost gage would see 20psi.
> > > >
> > > > Later, when almost home(and dead dog tired) seemed
> > > > that power was
> > > > less than normal and boost would only see 15psi.
> > > >
> > > > The last tank of fuel was treated with Lucas fuel
> > > > treatment, 1
> > > > gallon Lucas to 300 gallons of fuel.
> > > >
> > > > Any suggestions as to why the loss of power and
> > > > boost with fresh
> > > > filters?
> > > >
> > > > Thanks
> > > > Jay Darst
> > > > 85PT40 6V92 Detroit
> > > > Springfield, IL
> > > >
> > > >
> > > >
> > > >
> > >
> > > __________________________________________________
> > > Do You Yahoo!?
> > > Tired of spam? Yahoo! Mail has the best spam protection
> around
> > > http://mail.yahoo.com
> >
> >
> >
> >
> >
> > -----------------------------------------------------------------
--
> -----------
> > Yahoo! Groups Links
> >
> > a.. To visit your group on the web, go to:
> > http://groups.yahoo.com/group/WanderlodgeForum/
> >
> > b.. To unsubscribe from this group, send an email to:
> > WanderlodgeForum-unsubscribe@yahoogroups.com
> >
> > c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms
> of Service.
> >
> >
> >
> > [Non-text portions of this message have been removed]