Finally to truck out but it has not Power!!!!!

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Finally to truck out but it has not Power!!!!!

Postby Collers9640 » Thu Nov 02, 2017 6:21 am

Ok so after I fixed every other problem with my truck I took it out for a drive and now the truck has no power, frustration is setting in.
I have already turned the pump up so I know that’s not it.

The motor Will Rev up but there is no power behind the rpms. It feels like it just stops fueling at about 1/4 throttle.

Is it possible the fuel pin could be stuck or something? The motor sat for a while but the pump is a fresh rebuild and was done professional and put on a flow bench so I’m at a loss..
Any Ideas
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
Collers9640
fuel screw!!!!
 
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Re: Finally to truck out but it has not Power!!!!!

Postby CumminsPower59 » Thu Nov 02, 2017 9:19 am

How is the fuel supply? Got a pressure gauge on it somewhere after the lift pump? Sounds like it's not getting enough fuel.
Ike

91 W350 SRW, 3.07's, NV4500, 370's, THD LPPP, Super HX40, 2nd gen IC swap, BHAF, Isspro's, 2" lift, 285's on 3rd gen 17"'s.
04 VW Jetta Wagon TDI 5speed
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Re: Finally to truck out but it has not Power!!!!!

Postby Pausma » Thu Nov 02, 2017 9:51 am

x2 on fuel pressure
could try a new fuel filter also, simple things first!
91 D350, adjusted fuel pump, custom exhaust, pyro, tach and boost gauges
2001 2500 4x4 stage 2 afe intake, custom exhaust, edge insight
06 VW jetta tdi 5 speed, custom exhaust, egr blockoff, 1.5 malone tune
Pausma
fuel pin?
 
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Re: Finally to truck out but it has not Power!!!!!

Postby Remps » Thu Nov 02, 2017 11:38 am

I'd try lubing the horizontal pin that rides on the fuel pin as well, if it's stuck in a dry o-ring it could cause the exact issues you're having. Put a little grease on the fuel pin as well so you can see if the horizontal pin leaves a track. It's good preventative maintenance to lube the o-ring where the afc line connects to the cylinder head as well, while you're pulling the pump top off.Tightening and loosening a dry 25 yr old o-ring repeatedly can cause them to crack. Which can potentially cause further issues.
'90 D250 R/C,727,IC,6x.009's,1/8" bump,fuel psi,straight pipe w/5" stack.
'90 W250 R/C,47rh,K@N,HX35,1/8" bump,2nd gen IC,boost,egt,trans temp.3.07's.
'96 2500 S/C L/B,2wd,NV5600,3.54 L/S,cai,egt,pacbrake,mbrp exhaust,10 plate.
Bring back the Bank of Canada, PRE- 1974.
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14mm rotor
 
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Re: Finally to truck out but it has not Power!!!!!

Postby Gots_a_sol » Thu Nov 02, 2017 2:52 pm

Make sure you have the correct banjo bolt on the return outlet of the pump. The proper one has a tiny orifice to restrict flow.
-Joe

00 Excursion - 12v/nv4500, he351cw, 5x12s, 366 spring, THD piston pump, 4" intake/exhaust
Gots_a_sol
fuel screw!!!!
 
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Re: Finally to truck out but it has not Power!!!!!

Postby Collers9640 » Fri Nov 03, 2017 3:26 pm

Lift pump and fuel filter are brand new
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
Collers9640
fuel screw!!!!
 
Posts: 161
Joined: Wed Feb 24, 2010 4:25 pm
Location: Charleston SC
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Re: Finally to truck out but it has not Power!!!!!

Postby Collers9640 » Fri Nov 03, 2017 3:28 pm

Do you have a pic of the correct banjo bolt?
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
Collers9640
fuel screw!!!!
 
Posts: 161
Joined: Wed Feb 24, 2010 4:25 pm
Location: Charleston SC
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Re: Finally to truck out but it has not Power!!!!!

Postby Gots_a_sol » Fri Nov 03, 2017 4:32 pm

Image
-Joe

00 Excursion - 12v/nv4500, he351cw, 5x12s, 366 spring, THD piston pump, 4" intake/exhaust
Gots_a_sol
fuel screw!!!!
 
Posts: 390
Joined: Fri May 28, 2010 11:45 pm
Location: Charles Town, WV
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Re: Finally to truck out but it has not Power!!!!!

Postby Collers9640 » Sat Nov 04, 2017 8:50 pm

- I verified that I have the correct banjo bolt on the return line.
- I have a new lift pump installed
- I have a new fuel filter installed

I still have to check the fuel Pin.

Does anyone have any more ideas or things I can check.
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
Collers9640
fuel screw!!!!
 
Posts: 161
Joined: Wed Feb 24, 2010 4:25 pm
Location: Charleston SC
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