Thread: Fuel pressure gauge install 93 classic

A hot engine bay and pressurised fuel aren't condusive to mistakes. Are you really sure you need to monitor fuel pressure all the time? A proper gauge fitted to the rail when you actually need a diagnosis seems enough for me.

You're probably right, I thought it would be handy to monitor the fuel Pressure to give me a long term indicator of fuel pump condition, injectors etc and make it quicker to fault find any fuel issues. + I need more gauges to make the dash look even lol

Looking at locations I might try and install just after fuel filter.

2xpost

Ah Come on Beeutey , next you will telling me that LPG is dangerous !!!!!
The guage is an easy fit up , just tee into the Fuel temp sensor (on a 14CUX) (or the Cold start injector on a Flapper). not that hard , you can get pparrallell thread adapters to make it easy/safe . Remember it is only a electric sender unit , no fuel goes into the Cab

Originally Posted by 400HPONGAS

Ah Come on Beeutey , next you will telling me that LPG is dangerous !!!!!
The guage is an easy fit up , just tee into the Fuel temp sensor (on a 14CUX) (or the Cold start injector on a Flapper). not that hard , you can get pparrallell thread adapters to make it easy/safe . Remember it is only a electric sender unit , no fuel goes into the Cab

I don't care if petrol is more or less dangerous than lpg, you need to be very careful with fuel under pressure around the engine. Personally I would tee a pressure sender in the hose after the fuel filter, down the back. That way a leak is less likely to blow up in your face.

I thought the fuel temp sender doesn't come in to contact with the fuel as such but contacts the fuel rail metal to get the temp, maybe I'm thinking of something else?

Thanks

Your Probably right Milid ,you could test the the fitting for sealing by filling with grease and screwing the the sensor back in a few turns ,then pilot drill through with a 1/8 drill to get a pressure signal.(beeutey's idea of fitting it to the output of the rear fuel filter is sounding better !) First of all does the 14CUX system vary the fuel rail pressure according to load/demand the same way the Flapper system does with its Vacuum operated Fuel regulator ? This is the main reason the Fuel gauge comes in Handy,to keep an eye on what that regulator is up to ,apart from all the other minor reasons like fuel pump performance ,filter differential,running out of fuel ,making sure the rail is empty etc etc.So ,for a flapper the fuel guage is very useful, but for a 14CUX may be not so .

14cux runs a vacuum connected fuel pressure regulator, D2 and '99-on P38 don't.