Which Test Port for Fuel Pressure Gague

[TomB]

On Y2K trucks there are 2 fuel pressure test port fittings -The Inlet-protruding from the back of the fuel filter, and the Outlet- protruding from the injection pump next to the overflow valve. Which source would be the best location for the pressure gague? It seem to me that the outlet would give the most accurate readings as any restriction from the fuel filter would be included in the final pressure readings. Could you remove the shrader valve, screw on a 4AN Hose barb fitting and run a hose to a remote sending unit with a 1/8NPT hose barb fitting? Is this too simple? Am I missing anything?

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2000 Qc LWB ETC 6Sp 3:54 LSD, + all the options except leather, BD Stage ll Injectors,Edge EZ, Psychotty& K&N,
BD E-Brake with Shifter Control, ISSPRO EGT and Boost Gauges, Transfer Flow 50 Gal. Alum. Fuel Tank, Line X
16K Hijacker Double Rocker, Pulling a 35Ft. triple slide Spinnaker 5vr.
1996 Viper GTS
Suzuki DRZ400
1100 Yamaha Cruiser

[This message has been edited by TomB (edited 05-12-2001). ]

[This message has been edited by TomB (edited 05-12-2001). ]

 

[Bigsaint]

Tom, I went with the Schrader port pre-filter as the SPA, according to Brandon, was seeing to much fluctuation (sp) post filter. I don't know how it would work with other gauges though. Otherwise, you are correct, just remove the Schrader valve before installing the 4AN fitting. Hope this helps.

Scott W.

White 2001. 5 3500 ETH/DEE 4X4 Quad cab SLT,tow package and camper prep,Husky liners front and rear,DiPricol pyro,boost and oil temp gauges,SPA fuel pressure and temp. gauge,Edge EZ,Psychotty air,Bully Dog stage III injectors,ATS 3 piece manifold,HX40 turbo,4" BD exhaust,4" BD E-brake,McLeod clutch,Mallory 4150 lift pump,Mag-Hytec rear,Go-Rhino grill guard,Lund bug shield,PM tractor utility back up lights,Penda bed mat,365. 8 HP on the dyno and blow by bottle is bye bye !!! I love the smell of diesel in the morning, it reminds me of... . VICTORY !!!
<A HREF="http://albums.photopoint.com/j/AlbumIndex?u=1231655&a=9089608" TARGET=_blank><font color=red>My Truck</font></A>
<A HREF="http://albums.photopoint.com/j/AlbumIndex?u=1231655&a=9089604" TARGET=_blank><font color=red>THE SAINTS</font></A>

 

[dresslered]

TomB-
I think that you've got it! I finally received my autometer electronic fuel pressure gauge (4361) and am going to mount the sender remotely as you describe. I'm thinking that the outlet port would give the more important readings, but I have been concerned with the fluctuations that Sir Bigsaint describes.

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David Dressler
2001 Driftwood 3500 Quad Cab 4x4, 155 inch WB, HO Cummins ETH/DEE, SLT+, 3. 54 LSD, Camper Special, Trailer Tow, Heated Leather, Sliding Window, Jacob's E-Brake, Rhino Liner, VDO Vision (pyro, boost, engine + diff. temp. ), Autometer Ultra-Lite (electric fuel pressure, vacuum), Weather Guard Diamond Plate Saddle Box, Tork Lift camper tie-downs, Mag-Hytec, Mopar Tow Hooks, SmittyBilt Outland Sport Bumper Gaurd, 2-LO kit, AND functional Halo light!
Bigfoot 3000 10. 11 Slide-in Camper. "Do it in a Dually"

 

[Powder Extreme]

When you say remove the Schrader valve, do you mean unscrew the stem inside just like on a tire, then put the 4an fitting over the top?

Jerry

 

[TomB]

Jerry: Yes, that's the proceedure. Remove the internal valve, just like on a tire Schrader.

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2000 Qc LWB ETC 6Sp 3:54 LSD, + all the options except leather, BD Stage ll Injectors,Edge EZ, Psychotty& K&N,
BD E-Brake with Shifter Control, ISSPRO EGT and Boost Gauges, Transfer Flow 50 Gal. Alum. Fuel Tank, Line X
16K Hijacker Double Rocker, Pulling a 35Ft. triple slide Spinnaker 5vr.
1996 Viper GTS
Suzuki DRZ400
1100 Yamaha Cruiser

 

[Powder Extreme]

Okay, next question, I went to the local auto parts store... 4an?? what the heck is that?? They had no idea. Is it the same as 1/4 npt or the sort? Or is 4an a specific size I just need to find a better auto parts store to get?

Thanks

 

[Blackcloud]

A 4an fitting is the same size as the older(R12) refrigeration fittings used on later model vehicles.

 

[Bigsaint]

Chris, I have the SPA FP gauge and use the pre-filter location. So far, no problems with the vibration from the Cummins, guess time will tell. I purchased my FP sender/Schrader adapter from Brandon and he's setting these up so that the sender hangs straight down on a "T" fitting. I was just on the phone with Brandon recently and asked him if he has seen any problems with the Cummins shaking having a adverse affect on the electric senders. So far, NONE, and he has done over 30 SPA installs, I believe. Here's a link to Brandon's site, give him a call if you would like more info on the electric sender/FP install. Great guy to shoot the I TRIED TO BY-PASS THE CUSSING FILTER with and he has really done his homework in regards to this topic.

Brandon's site

Scott W.

 

[ReggieRam]

Hey Guys-

Take a look at the new TDR issue, page 38. It goes over the electronic fuel guage setup, as well as equipment needed and problems associated with it. It seems that those of us with Y2K or later trucks may have some logistical difficulties. If the author is wrong, please let me know since I'm getting ready to put in guages in a week or two (next payday!), and I'd like to have this figured out before I start working.

TIA-
Chris

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2000 3500 QC 4x4, 6 Speed, 4:10, LSD, Raider cap, Carpet kit, Spray-in liner, K&N Filter. "OBNOXIOUS BEAST"

 

[TomB]

Jerry: You need to go to a speed shop or get on the Summit (HTTP//www.Summitracing.com ) or Pegasus website (HTTP//www.pegasusautoracing ) and look under fittings. They both have 800 numbers and helpful techs. Just tell them what you are planning to do and they will source the needed parts.

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2000 Qc LWB ETC 6Sp 3:54 LSD, + all the options except leather, BD Stage ll Injectors,Edge EZ, Psychotty& K&N,
BD E-Brake with Shifter Control, ISSPRO EGT and Boost Gauges, Transfer Flow 50 Gal. Alum. Fuel Tank, Line X
16K Hijacker Double Rocker, Pulling a 35Ft. triple slide Spinnaker 5vr.
1996 Viper GTS
Suzuki DRZ400
1100 Yamaha Cruiser

[This message has been edited by TomB (edited 05-14-2001). ]