iv tryed a metering unit in my new rs turbo no fuel comeing out of the injectors but fuel to cold start same as my old one need help changed pump fuel relay, new plugs leads dizzy ect still no joy

 

funny things the mfi metering units, do ya get anything to the injectors when ya push the flap down

 

Did you change the whole metering unit or only the bottom half?
Very strange problem if you changed the whole thing! lol
Could only be injectors not opening... but all 4?? Doubtful, they normaly leak not jam shut!
Did the new metering unit come with a EMFPA (black box on right hand side of MU) or are you using the one off your old one?

 

came with all black plugs full unit as well got loads to cold start but none
out of top both units the same tryed putting the flap down

 

I dont know if the black fuelling ecu can shut the fuel off 100% but might be worth trying another on of those?!

 

yeh could take the fuel ecu off my other rs was going to try the other
metering unit as well got a day off tomro

 

if both of them are doing the same would it be anything to do with the loom

 

going to cheak all the wireing tomro seems odd tryed running battery to fuel pump still no fuel just loads to cold start

 

yeh seams strange that its priming but nothing else

 

this problem on my car was the fuel pipes were the wrong way round, but mine is a conversion

 

going to try meter unit and fuel ecu if no joy will start cheaking the wireing

 

what happens if you crack the banjo bolts open slightly on the metering head for the injectors and bridge the fuel pump relay out.

 

Hello mate,

Really sorry i never got back to you with the metering unit you asked about, it seems to have gone missing but i could have always shoved it in my lock up and forgotten....

Any how, if you have tried two metering units with no joy, i suspect your problem will be with a fuel regulator (if the same one was used both times), fuel accumulator or the fuel pump. With the plug disconnected from the black box on the side of the fuel distributor fuel should still come out of the injectors when the flap is depressed.

Is it possible that both meting units were pants?

Rob,

 

Sounds like a silly one. but is the car timed correctly? My friend had this problem for ages and it turns out the car was 180 degrees out on the timing so the fuel wasn't being pumped through.

Just a thought if its a recently rebuilt engine or something.

 

thanks for info spending weekend trying to sort the prob

 

put a new metering unit into day got a small amount of fuel out of the top of meter head seems better then the last one. could the fuel pump be playing up

 

does it prime then loose pressure

 

seems to going to try a pump