Engine/Transmission (1994 - 1998) Fuel Pressure Gauge

[JBlackwell]

Originally posted by Joe G.

The banjo on the side of the pump is the best place. You don't need any more hoses and stuff up by the filter to get in the way.

Did you use a 1/8" - 27 Pipe Tap??? I need to do mine?

 

[JGheen]

Originally posted by Joe G.

The banjo on the side of the pump is the best place. You don't need any more hoses and stuff up by the filter to get in the way.

Show me a pic of this banjo bolt, please. I believe I am getting confused with which bolt it is. Are you talking about the one behind the AFC where the clean fuel from the fuel filter goes into the pump?

 

[Joe G.]

Sorry about being so slow in replying. Here are two pictures of my fuel pressure connection to the banjo bolt on the side of the injection pump. The first one is from above looking just behind the air horn. The AFC is just to the right of this picture. The second picture is looking from the front of the truck.



The needle valve is to damp the pressure spikes from the lift pump. There is also a snubber right behind the needle valve. I'm not sure that they are necessary for my Westach guage, but I had a mechanical guage on before. Didn't like it so I got the Westach.



Drill the banjo bolt from the rear so the hole is straight. Tap it for 1/8 NPT. Remember, like all pressure guage connections, be VERY clean with your work and make sure all chips are cleaned up before installing the banjo back on the pump. I used a grease gun hose to get from the fitting to the fender well where I mounted my pressure sensor.



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[JGheen]

Thanks, Joe



That was the bolt I was thinking of but wanted to be sure. How far do you have that needle vavle screwed in to reduce the pressure spikes?

Good lookin' set-up, though, time for me to order some -3 AN fittings and steel braided line.

 

[Joe G.]

Set the needle valve closed. Then open it slowly while the engine is running until the gauge barely works. The pressure spikes from the lift pump will wreck a mechanical gauge unless they are damped as much as possible. Some electronic sensors will die eventually too. Westach claims that their sensor is not affected by the pressure spikes, but I feel better with them damped.