It never rains it pours with this Fiesta
Ok.. got all the starter problems and electrical problems sorted!
So put it all back together start the car up and surprise surprise it started up and sounded great.. then I smelt fuel
Turned the engine off and looked under the car and there was a massive puddle of petrol, it was pissing out from the rubber pipe between the metal lines under the car and the plastic pipes from the pump, even thou it was all connected.
So today I replaced all the connecting pipes and put new clips on from Ford. I then turned the ignition on and the fuel pumped whirled away etc but I could hear a hissing, so turned off the ignition and checked under the car to see no leaks etc so I checked under the engine and the fuel filter was fine but petrol was pissing out of the top of one of the injectors!!
So took the inlet etc off pulled off the injector and the o-ring had a very slight split so changed that and put it all back together and the primed the fuel pump again and the petrol had stopped pissing out of the injectors but was pissing out from under the car again!!
Have I got a fuel pressure problem? how does the fuel system work in the sense of should it be returning to the petrol tank? Its almost as if the fuel pump is too powerful for the fuel lines? Should the fuel pressure be constant even with the engine off? any suggestions?

Need help PF!

 

cant help ya m8 but ill say this...................................



Fuck me you have got patience!!!!


Keep at it fella all these little gremlins will soon clear up and then i see a beast appearing!!

 

Cheers mate these problems have gotta stop soon!...

 

They can only go on till everything new

 

Fuel pressure is normally regulated on the return to the tank. So you should have full pressure upto the regulator then reduced pressure back down. Is the regulator working ? Adjustable ? Correctly set ??

 

*Novice mode* Untested how would I test it??

 

Fit a Schrader valve into both the feed and return lines, and use a normal tyre pressure guague to take a reading if you havnt got anything else

 

So If i buy/borrow and fuel pressure guage what pressures should I be looking at?

 

45 psi ish in the in (feed) line will give you a good start.

 

Think I may have worked out the problem, the grub on the regulator was almost all the way in.
Took the return off the bottom and with a cup underneath primed the pump and nothing came out, gave the grub a couple of turn out (anti clockwise)and it started squirting out on priming the pump, releasing the excess fuel
Lets hope this was the problem.
How do you set up a fuel reg thou! only with fuel guage? if so where do you take the measurements from? can do from the return off the reg but what about the feed?