8.3 Cummins - turning up the injection pump

[transit360]

Hi guys,

Does anyone here have any experience with the 8.3 Cummins? To
me, it looks identical to the 5.9 except bigger of course. I'm
wanting to turn up my injection pump to get a little extra juice and
was wondering is someone could pinpoint where and how to turn it up.
I have two matching pusher buses right now and one of them
runs like a scalded dog and the other one's a slug in comparison.
Both get the same fuel mileage for the most part (around 7-8mpg).
Both have new fuel and air filters and clean diesel, so I'm down to
try and juice up the pump.
The one that has more power also smokes a little more, with a
more detectable smell of diesel than the other from the extra fuel,
so I'm thinking that someone has already turned up the pump on the
faster bus. All specs as far as temp, oil press, rear axle, etc are
the same, which is why I want to try the injection pump next. Any
suggestions? I'm sure it's simple but I always like to ask anyone's
experience.

Thanks,
Steve
http://www.360partybus.com
2 QBRE Bluebird 8.3 partybuses

[Dan Weaver]

Try asking on the Bluebird BMC site, and the deisel rv site - folks
are running 8.3s on the BMC 37 footers, and lot's of SOBs running
the 8.3. There are folks on BMC site running the Banks kit - not
sure if anyone turned up the pump.
http://autos.groups.yahoo.com/group/BlueBirdBMCowners
http://autos.groups.yahoo.com/group/Dies...=154352493
Dan 94 BB BMC 37'

--- In WanderlodgeForum@yahoogroups.com, "transit360"
wrote:
>
> Hi guys,
>
> Does anyone here have any experience with the 8.3 Cummins? To
> me, it looks identical to the 5.9 except bigger of course. I'm
> wanting to turn up my injection pump to get a little extra juice
and
> was wondering is someone could pinpoint where and how to turn it
up.
> I have two matching pusher buses right now and one of them
> runs like a scalded dog and the other one's a slug in comparison.
> Both get the same fuel mileage for the most part (around 7-8mpg).
> Both have new fuel and air filters and clean diesel, so I'm down
to
> try and juice up the pump.
> The one that has more power also smokes a little more, with a
> more detectable smell of diesel than the other from the extra
fuel,
> so I'm thinking that someone has already turned up the pump on the
> faster bus. All specs as far as temp, oil press, rear axle, etc
are
> the same, which is why I want to try the injection pump next. Any
> suggestions? I'm sure it's simple but I always like to ask
anyone's
> experience.
>
> Thanks,
> Steve
> http://www.360partybus.com
> 2 QBRE Bluebird 8.3 partybuses
>

[Gregory OConnor]

Steve, Randy has a 8.3 in a Ford 650 go to Wanderlodge or Wanderlodge
all. He is a great guy and very Knowledgable.
Greg California
94pt40

--- In WanderlodgeForum@yahoogroups.com, "transit360"
wrote:
>
> Hi guys,
>
> Does anyone here have any experience with the 8.3 Cummins? To
> me, it looks identical to the 5.9 except bigger of course. I'm
> wanting to turn up my injection pump to get a little extra juice
and
> was wondering is someone could pinpoint where and how to turn it
up.
> I have two matching pusher buses right now and one of them
> runs like a scalded dog and the other one's a slug in comparison.
> Both get the same fuel mileage for the most part (around 7-8mpg).
> Both have new fuel and air filters and clean diesel, so I'm down to
> try and juice up the pump.
> The one that has more power also smokes a little more, with a
> more detectable smell of diesel than the other from the extra fuel,
> so I'm thinking that someone has already turned up the pump on the
> faster bus. All specs as far as temp, oil press, rear axle, etc are
> the same, which is why I want to try the injection pump next. Any
> suggestions? I'm sure it's simple but I always like to ask anyone's
> experience.
>
> Thanks,
> Steve
> http://www.360partybus.com
> 2 QBRE Bluebird 8.3 partybuses
>

[Gregory OConnor]

Steve, the diesel smell is not a sign of better larger burn but a
sign of inefficient injector spray. sounds to me like the lesser
power one has a 'weak pump' or a 'small volumn set of injectors' or
a 'Turbo issue'. When I have a prob in my 5.9 I drop 2 quarts ATF in
30 gal. of fuel and put 50/50 mix of ATF /Fuel in a new fuel filter.
Maybe the diesel smell and smoke is normal?
Greg
California
94pt40 --- In WanderlodgeForum@yahoogroups.com, "Gregory OConnor"
wrote:
>
> Steve, Randy has a 8.3 in a Ford 650 go to Wanderlodge or
Wanderlodge
> all. He is a great guy and very Knowledgable.
> Greg California
> 94pt40
>
> --- In WanderlodgeForum@yahoogroups.com, "transit360"
> wrote:
> >
> > Hi guys,
> >
> > Does anyone here have any experience with the 8.3 Cummins?
To
> > me, it looks identical to the 5.9 except bigger of course. I'm
> > wanting to turn up my injection pump to get a little extra juice
> and
> > was wondering is someone could pinpoint where and how to turn it
> up.
> > I have two matching pusher buses right now and one of them
> > runs like a scalded dog and the other one's a slug in comparison.
> > Both get the same fuel mileage for the most part (around 7-8mpg).
> > Both have new fuel and air filters and clean diesel, so I'm down
to
> > try and juice up the pump.
> > The one that has more power also smokes a little more, with
a
> > more detectable smell of diesel than the other from the extra
fuel,
> > so I'm thinking that someone has already turned up the pump on
the
> > faster bus. All specs as far as temp, oil press, rear axle, etc
are
> > the same, which is why I want to try the injection pump next. Any
> > suggestions? I'm sure it's simple but I always like to ask
anyone's
> > experience.
> >
> > Thanks,
> > Steve
> > http://www.360partybus.com
> > 2 QBRE Bluebird 8.3 partybuses
> >
>