should the fuel pump prime each and every time the ignition's turned on regardless if the car fires/starts/runs or not?

Cheers
Sime

 

providing the ignition has benn off for a few seconds.

The prime part of the fuel pump relay fails a lot.

 

ok thanks for that, i just got a multimeter on it and it wasn't giving power to the pump when cranking everytime so i think its faulty

 

they dont always, early cars ive had do but then both my 90specs wont if it hasnt turned over and thus used some pressure

 

thats still a fault with the relay, it's common.

 

mmm surely it must be faulty if its not powering the pump when cranking ?

 

mine dont not all the time and its bob on

 

The relay should always prime when the ignition has been off for about 10+ seconds. If you turn it back on before 10ish seconds it wont prime. Anything after that and its faulty, although the prime wont stop the car running but may make cold starting poor.....

 

got a new one from ford and sorted it...Ł30

 

they do sting you dot they

 

mine never starts on cold first time, takes afew cranks, reckon this could be due to the relay?

where is the fuel pump relay?

 

under driver side foot well tucked up under dash the big pink one!

 

 

TURBO BOI i doubt very much its the relay.

Try unplugging your cold start injector if it isn't already.

 

doesnt start at all with that disconected, just dies with it off

 

When you say it dies??? but you say it doesn't start at all?

 

it will run once for mayb for 1 second and die, if i try to start again it will jus crank and crank and nothing happens untill i reconnect the cold start valve then it will start with more cranking but still not on the key. hot start is fine tho always on the key

fitting efi in afew weeks anyway but thought if it had been the relay it would have be nice for it to start first time for the last few wks on mfi