Fuel Problems Need some input - Competition Diesel.Com

largeride · 07-14-2012, 01:26 PM

Ever since the truck sat all winter we cant seem to get enough fuel. Last year it had very black smoke and the EGTs were around 1600 to 1700. This year at the first hook EGT went to over 1900 and stay the the whole pass. It has a P Pump build by Schied and a Fass 200 GPH. We have the p pump check on a bench and Its fine.

Just wondering if anyone has any Ideas?

Here is a videohttp://www.youtube.com/watch?v=vf61z...ature=youtu.be

Jim Fulmer · 07-14-2012, 04:08 PM

Lean.....explains the EGT's......watching!

Jim

12vriviera · 07-14-2012, 04:13 PM

My first guess would be fuel pump pressure. Or it just can't keep up anymore.

largeride · 07-14-2012, 04:43 PM

Data logger for that pass was 35psi out of the fass pump. And the p pump was a 800 cc

jedeka · 07-14-2012, 11:52 PM

You can have pressure but not enough volume.

Diehard Ram · 07-15-2012, 10:04 AM

Your low on pressure. You need more. You need to be above 60 psi.

largeride · 07-16-2012, 02:07 PM

Is 60psi possible with the fass pump? We run number 6 an line now think it should be bigger?

12vriviera · 07-16-2012, 02:19 PM

For 800cc ppump? Yes, at least-8 at 60psi or more, and dual feeds wouldn't hurt

largeride · 07-16-2012, 05:35 PM

Quote:

Originally Posted by 24vriviera

For 800cc ppump? Yes, at least-8 at 60psi or more, and dual feeds wouldn't hurt

The pump maxed out is 900cc we have it set at around800. I have the stuff to go to number 8 and thats the project for tonight. Fass said today to run 45 psi and do it by putting a shut off on the return side of there pump. Gonna try that for this weekend. We also put new filters on it this winter,and going to change them just in case.

dieseljunkie · 07-17-2012, 08:22 AM

I would run -10an at least then dual feed with 2, -8an to the p-pump.

*2Tone12V* · 07-17-2012, 08:30 AM

Quote:

Originally Posted by Diehard Ram

Your low on pressure. You need more. You need to be above 60 psi.

Quote:

Originally Posted by largeride

Is 60psi possible with the fass pump? We run number 6 an line now think it should be bigger?

Keep your pressure at or above 45 psi and your fine.

*2Tone12V* · 07-17-2012, 08:30 AM

Quote:

Originally Posted by dieseljunkie

I would run -10an at least then dual feed with 2, -8an to the p-pump.

x2...

TheHammer · 07-17-2012, 04:33 PM

2tone12v.......i sent you a pm. was hoping you could respond. so this issue doesnt happen to me....thanks

largeride · 07-17-2012, 07:10 PM

well we tried to duel feed the pump. was going to use the fitting on the intake side for the return. but can't because the fitting hits the sheet medal intake and the other ports are no drilled. any other ideas? also I was wrong the supply and return lines are number 8. We are now going to number 10 supply to IP and number 12 to the fass pump

largeride · 07-19-2012, 01:32 PM

Well I'm kinda embarrassed to tell what the problem was but hopefully it will help someone out in the future. We rebuilt the dash this winter and the fuel shut off cable was moved and never adjusted there for shutting the fuel off a little. Thanks for all the help and the good thing is we have bigger supply lines and high pressure. Here is a picture of the dash.

RAMICATOR · 07-19-2012, 03:20 PM

it happens. a buddy of mine did it, he just forgot to push the cable all the way it. we put a spring on the shutoff arm on the pump so it wouldnt happen again.

07-14-2012, 01:26 PM	#1
largeride Name: largeride Title: Green Behind the Ears Status: Not Here Join Date: Jun 2010 Member`s Gallery Posts: 75	Fuel Problems Need some input Ever since the truck sat all winter we cant seem to get enough fuel. Last year it had very black smoke and the EGTs were around 1600 to 1700. This year at the first hook EGT went to over 1900 and stay the the whole pass. It has a P Pump build by Schied and a Fass 200 GPH. We have the p pump check on a bench and Its fine. Just wondering if anyone has any Ideas? Here is a videohttp://www.youtube.com/watch?v=vf61z...ature=youtu.be

07-14-2012, 04:08 PM	#2
Jim Fulmer Name: Jim Fulmer Title: Too Much Time Status: Not Here Join Date: May 2006 Location: Quanah Tx. Member`s Gallery Posts: 5,013	Lean.....explains the EGT's......watching! Jim __________________ 01' 12V, S/B, Q/C, 4WD 98' 12V, S/B, Q/C, 2WD

07-14-2012, 04:13 PM	#3
12vriviera Name: 12vriviera Title: That Guy with that car Status: Not Here Join Date: Mar 2009 Location: north texas Member`s Gallery Posts: 6,846	My first guess would be fuel pump pressure. Or it just can't keep up anymore. __________________ Brandon Carr. Owner of the 24V RIV Competition Diesel.Com - Bringing The BEST Together I am a pushover https://www.facebook.com/#!/24VRIVIERA

07-14-2012, 11:52 PM	#5
jedeka Name: jedeka Title: Too Much Time Status: Not Here Join Date: Oct 2009 Location: Boone, Iowa Member`s Gallery Posts: 1,413	You can have pressure but not enough volume. __________________ 1996 Dodge Ram 2500 4x4, 5 spd. 4.88 gears, 2.5" turbo, Smokem inj, 5000 rpm springs, NV271, South Bend dd clutch, 33x12.50-15 STS tires, 6 inch stack, custom valve springs 2005 3500 4x4 dually, auto, KORE leveling coils, 19.5 wheels, Smarty Jr

07-15-2012, 10:04 AM	#6
Diehard Ram Name: Diehard Ram Title: Sled puller no more Status: Not Here Join Date: Dec 2009 Location: Xenia,Ohio Member`s Gallery Posts: 688	Your low on pressure. You need more. You need to be above 60 psi. __________________ Thanks, Gavin oo Daily Driver 06 Mega Cab 06 Jeep Liberty Diesel

07-14-2012, 04:43 PM	#4
largeride Name: largeride Title: Green Behind the Ears Status: Not Here Join Date: Jun 2010 Member`s Gallery Posts: 75	Data logger for that pass was 35psi out of the fass pump. And the p pump was a 800 cc

07-16-2012, 02:07 PM	#7
largeride Name: largeride Title: Green Behind the Ears Status: Not Here Join Date: Jun 2010 Member`s Gallery Posts: 75	Is 60psi possible with the fass pump? We run number 6 an line now think it should be bigger?

07-16-2012, 02:19 PM	#8
12vriviera Name: 12vriviera Title: That Guy with that car Status: Not Here Join Date: Mar 2009 Location: north texas Member`s Gallery Posts: 6,846	For 800cc ppump? Yes, at least-8 at 60psi or more, and dual feeds wouldn't hurt __________________ Brandon Carr. Owner of the 24V RIV Competition Diesel.Com - Bringing The BEST Together I am a pushover https://www.facebook.com/#!/24VRIVIERA

07-17-2012, 08:22 AM	#10
dieseljunkie Name: dieseljunkie Title: Wasted Wages Status: Not Here Join Date: Dec 2007 Location: Littlestown, PA Member`s Gallery Posts: 1,068	I would run -10an at least then dual feed with 2, -8an to the p-pump. __________________ 02 24V HO, NorthEast P-pump, , E.D. inj, ED twins, O-ringed, ARP studs, P&P and Balanced by Advanced Engine. Thanks,JWP Fab, E.D., Pure Diesel Power, GrandRock, Mumau Diesel,and Advanced Engine. 2010 FPP 2.6 points champion 2010 NADM 2.6 points champion

07-17-2012, 04:33 PM	#13
TheHammer Name: TheHammer Title: broke Status: Not Here Join Date: May 2012 Location: juneau wi Member`s Gallery Posts: 738	2tone12v.......i sent you a pm. was hoping you could respond. so this issue doesnt happen to me....thanks

07-17-2012, 07:10 PM	#14
largeride Name: largeride Title: Green Behind the Ears Status: Not Here Join Date: Jun 2010 Member`s Gallery Posts: 75	well we tried to duel feed the pump. was going to use the fitting on the intake side for the return. but can't because the fitting hits the sheet medal intake and the other ports are no drilled. any other ideas? also I was wrong the supply and return lines are number 8. We are now going to number 10 supply to IP and number 12 to the fass pump

07-19-2012, 01:32 PM	#15
largeride Name: largeride Title: Green Behind the Ears Status: Not Here Join Date: Jun 2010 Member`s Gallery Posts: 75	Well I'm kinda embarrassed to tell what the problem was but hopefully it will help someone out in the future. We rebuilt the dash this winter and the fuel shut off cable was moved and never adjusted there for shutting the fuel off a little. Thanks for all the help and the good thing is we have bigger supply lines and high pressure. Here is a picture of the dash.

07-19-2012, 03:20 PM	#16
RAMICATOR Name: RAMICATOR Title: They Call Me Boner Status: Not Here Join Date: Jun 2006 Location: Rock Fall, IL Member`s Gallery Posts: 448	it happens. a buddy of mine did it, he just forgot to push the cable all the way it. we put a spring on the shutoff arm on the pump so it wouldnt happen again. __________________ 98.5 2500 4x4 5 speed.