Hi
I know there has been a few of these posts but i really need some help.
my rst won't start. i had a problem with the fuel pump and relay but i have replaced those, now i'm not getting any fuel to the injectors. There is plenty of pressure when i crack the feed from the fuel filter to the fuel distributor, but there is nothing going to the injectors.
Can someone please help me.

Thanks in advance

 

Manually press the flap inside the metering head. it may be stuck.

 

Sometimes the metering unit gets air locked. You might have to crank it over and hold the metering flap down with the 4 banjo bolts slack to allow the air to escape.

Be carefull not to burn the starter out as they can get quite hot with continual cranking.

 

I pressed the flap down and the fuel came through as you said it's wan't very powerful though, i thought the fuel should come through alot stronger.
what can be causing this? can i take the fuel meter off and clean it up? maybe it's clogged up?

 

You need to bridge the pump and have it running when you press the flap down, if you simply pressed it while the pump wasnt running you will just be using whatever pressure is left in the fuel line.

 

bttt

 

tezza_RS

1) Does it spark?

 

Jano_OddKidd- yes the spark is good. the car just turns over fine but just won't start up. some times when it's cranking it stutters abit as if going to start but doesn't.

 

Sounds like its out of tune.

Dose the fuel pump work when cranking?

How much advance is there on the dizzy?

Have you changed anything since it was running?

Have you tried pushing the metering unit flap down ONLY by 1-2mm when cranking. You will need a freind to help or a bit of wire bridged on the starter motor if your on your own.

If you keep turing it over and pushing the flap you will flood the engine and end up with wet fouled plugs so you may need to remove them and clean them.

 

Jano - This timing on the dizzy is lined up with the mark on the head and the cam is timed to 0 on the pully side. i haven't changed anything since it last started. the pump runs while cranking. can i adjust the co screw? will this affect it? when you say out of tune what do you mean?

 

I mean that the engine needs to be setup with a COmachine and also the cam timming etc etc.. Obviously the car will need to start first.

DO NOT adjust the screw. Let someone who knows what they are doing adjust it if needed. Its not something you can guess pal.

 

I won't go messing with it don't worry.
are there any other things i can try to get it started?

 

I have just taken the metering unit off the car tonight. as i removed the boost pipe from the bottom of the unit fuel poured out from the pipe. i know this shouldn't happen. any ideas why this has happened? is the fuel distributor at fault?
how much are metering units new or rough prices for good second hand ones?

 

happned on mine mate , pressed the flap on the meetering unit down down and got a face full of petrol , sounds like the meetering unit is shafted , whack another one and it'll fire up

 

New they are Ł1800

Second hand Ł75

 

1800 fuck that,you can get decent management for that

 

Right then still having a problem getting the car started.
Had the fuel distributor off and cleaned it up, now the fuel and pressure at the injectors is good. car turns over very slowly now though. got excellent spark and fuel now, any ideas?
also when the ignition is on ond the pump primes there is a strange noise from the fuel distributor, when i crack an injector off it goes, is this air in the system? if so how do i bleed the system to get rid of this?

 

is it a squealing sounds ?

 

try turning over the engine and while doing that, undo the pipe thats comes from the fuel filter to the metering unit.

If there is any air in the fuel system it should free itself.

 

Yeah it's like a suealing sound. is this air?
by releaseing the pipe from fuel filter to metering unit this will stop this happening?
i'll try this later today and see if it's ok after. will this still cause it not to start?

 

It will cause it not to start if you have no fuel pressure. My own car done the same thing last week where it had not been started for 8 years

I had to change the mix unit and bleed the air. Once i did the fuel pressure was right as the flap in the metering head was firm and had around 2-3mm movement.

If you have fuel pressure the flap under the filter will be firm.

Regards

 

The fuel pressure is good on 1-2 and 4 but 3 is quite weak. will this be caused by the air problem?

 

how do you know that?


You cant test MFi injectors like you can and EFi injector pal. Cracking off the injector wont do anything as it requires the cylinder to such the juice.

 

While cranking i cracked each fuel pipe off at the fuel distributor to check if the fuel is getting through. on 1-2-4 the fuel came out with pressure while on 3 it just trickled out. this was just a test that i did, how can i do it properly to make sure?

 

Obviously im not trying to teach you to suck eggs but that shouldnt happen from being sat?? Thats what the one way valve is for?

tezza_RS, you could pull all 4 injectors out and connect them up and compare how they spray, as they will all spray at the same time, but thats guna make quite a mess