Engine/Transmission (1998.5 - 2002) where to tap in for fuel pressure gauge

[moremph]

Hey all I have to install a few fuel pressure gauges here in a few weekends. Where do you tap into the fuel system for the fuel pressure gauge. I believe i rember reading that oyu can buy a modified bango bolt that has a spot in it for the pressure gauge to tap. Thanks Travis

 

[DHatfield]

You can have it at the bango fitting before the fuel filter or at the fuel pump itself. I have mine at the fuel pump as that is what is the most important to me.

 

[dresslered]

Personally, I would go after the fuel filter. I put mine in the bottom banjo leaving the fuel filter as I am mainly concerned as to the pressures that the VP44 is seeing. If you go pre-filter, I clogged filter will still show good pressure.



Also, install the sender remotely if it is electric. The easiest method is to run a 1/8" NPT grease hose from the tapped banjo to the sender.

 

[KLockliear]

Put it right at the inlet to the VP44. You want to see what is getting into the pump, not what is before it.

 

[Thomas]

If the gauge is for the Cummins in moremph's signature, I doubt he has a VP44

 

[dresslered]

I have to install a few fuel pressure gauges

Unless he is extremely anal, I was thinking it was for some other trucks.

 

[Thomas]

Now I'm really confused.

 

[moremph]

They are for a 99 and an 01 i should have stated it but i did say it was for some other trucks. Anybody have any pics of where they tappe in at or the fittings they used. Did you just get an new bango fitting or bolt or what. Thanks Travis, I am new to these 24 valves.

 

[Thomas]

The 1999 has two plugged holes on the top of the water separator/fuel filter housing with 1/8 inch NPT plugs. The forward port is post filter. No special banjo bolts needed to tap into the low pressure fuel system.



I'd go with a tapped banjo bolt at the location mentioned above by David on the 2001.

 

[dresslered]

The 2001 will need a tapped banjo available from Geno's which is tapped for an 1/8" NPT fitting. Just replace the one under the fuel filter and mount the sender remotely.



You need to consider the water-hammer effect from the injection pump and vibration from the engine when mounting these delicate electric senders otherwise their life will be very short lived. I chose to use the banjo under the filter because; 1) I have retained the factory schrader valve on the injection pump, and 2) have have increased the 'snubbing' effect by locating further from the injection pump. Do a search as there is a lot of good info out there.



The 1999 will be similar except as Thomas states, it comes with the 1/8" ports.

 

[moremph]

would a mechanical gauge with a isolator be better or would you use electrical . Thanks Travis

 

[Rman]

the pulsating effect of the pump is really annoying. I suggest running a line from the point at the vp44, through a needle valve and barely open it, then run the line straight to the guage in the cab. Don't worry about the isolator, they're junk, they leak and don't last long either. Electrical senders hate vibration and need delicate setup to last very long and even then... it's electrical so it's bound to fail (I'm a EE and still don't have faith in solid state electronics in those kind of environments. )



There is other ways to reduce the cab noise, believe me it gets old real fast when under a heavy load. My buddy ran his straight from the pump to the cab and that only lasted one test drive!



good luck, 24v's aren't that bad.

 

[College Cummins]

Hey Travis, Good to see you and Brian got a membership. I should get my gauge in over the break, so if you can wait that long, I can show you exactly where to put it, and show you on my truck. If you want to see what they are talkin about before break, I can show you where on Thursday, before I leave. The 01 should be like my truck, but i'm not sure about the 99. The westach that i got is electric, just cause i didn't want fuel in the cab, cause i'm picky, but if going mechanical, i agree with the above post about using a needle valve in line, because then it is always just a turn away from being shut off if a leak develops. JMHO, Happy Holidays, and God Bless, James