kieranfarr

having a real problem with my 88 mfi xr3i when i first turn the key the fuel pump primes then when i go to start the car will fire on the cold start valve for about 2-3 seconds before cutting out again, i tried cracking off the banjos on the top of the metering unit which feed the injectors but nothing although the banjo bolt itself feels wet could it be the fuel pump? if so can anyone tell me were this is as there seems to be one under the bonnet and one near to the fuel tank quite confused.

primedog

would think theres only one pump at the rear with the tank and under the bonnet would be the accumilator and a filter. u could try by passing the relay and putting the pump on a constant, then crack off the banjo connector on the fuel filter slightly and if thers fuel in the tank and the pumps working it should feed the filter. (best to have a mate turn ignition on for a few seconds wile ur at the ready to turn the spanner to tighten the filter back up at first splirt of fuel)

the_frozen_one

iTrader: (1)

You pushed the flap down with the ignition on to check for air leaks?

kieranfarr

which flap are you referring too?

kieranfarr

right been out today and tried bypassing the relay which didn't relay help it (doing the same as before) also tried working the flap but there is only about 10mm of play in it is this normal? just no fuel to injectors, help appreciated.

kieranfarr

eureka! got it going with curiosity really took the metering head off and there was a piston on the bottom of it cranked it over and it fired but i had disconneced the air hose so reconnected that and started again gave it some revs and the little piston shot out so decided for curiosty sake i would put the head back on and see what happens, i now own a running xr3i

Lordfarquhar

Hi there, having the same problems with my car...what piston are you talking about?

mk2grp1

this piston i am guessing