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Old 12-24-2017, 09:18 AM   #1
Skoolie
 
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Join Date: Dec 2017
Location: Arkansas
Posts: 143
Year: 2005
Chassis: School bus
Engine: Cummins
Everyone with a vp44 pump needs to read This

https://www.bluechipdiesel.com/vp44_diagnostics.html?imz_s=upsps1gpha7omnqsokurob fom3
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Old 12-24-2017, 10:06 AM   #2
Traveling
 
Join Date: Nov 2015
Location: Midwest
Posts: 2,573
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
Some good info there.

I have that injection pump on my 24V Cumins. The most important thing is that it gets good flow of fuel as it cools the pump. If the lift pump is weak, the VP44 will burn itself out.

I upgraded lift pumps (Raptor Air Dog) and put it by the tank to PUSH the fuel. Add a low fuel pressure alarm/light. Add a fuel pressure gauge.

Here is more good info


I replaced ALL my fuel lines with overkill 3000 psi hydraulic hose.

When I go to start it after sitting for weeks, I just bump the key and she's running- no more lost prime.
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Old 12-24-2017, 10:08 AM   #3
Traveling
 
Join Date: Nov 2015
Location: Midwest
Posts: 2,573
Year: 2003
Coachwork: BlueBird
Chassis: TC2000
Engine: 5.9L Cummins
Rated Cap: '00
Don't forget to check your harmonic balancer.
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Old 12-24-2017, 12:43 PM   #4
Skoolie
 
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Join Date: Dec 2017
Location: Arkansas
Posts: 143
Year: 2005
Chassis: School bus
Engine: Cummins
Huh? Harmonic balancer
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Old 12-24-2017, 12:44 PM   #5
Skoolie
 
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Location: Arkansas
Posts: 143
Year: 2005
Chassis: School bus
Engine: Cummins
That is a good site
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