Think my fuel metering unit is buggered.The reason being,my car won,t start.Have got a spark but no fuel.It,s going through the filter and into the metering unit,but doesn,t come out of the 4 pipes to the injectors

 

When i undo the 3 different unions below,fuel spirts out of them under pressure

 

But when i undo this 1 of 4 ,no fuel spirts out,so fuel is definatley entering the metering unit,but not coming out of the 4 pipes to the injectors


I also think it could be the black block on the side of it.

Anybody help..(SAFECHAV) E.C.T

 

Firstly.............LOVING the pointy pictures

Right.......the 3 unions you indicate, show there is fuel pressure.

Now, you won't get fuel out of the actual injector pipes unless the flap is being pushed down (thats how the fuel is metered).

So, you could try, making the pump run non stop and gently pushing the flap, and you should hear the injectors spraying (don't do it loads you'll flood the engine)

Personally though, i'd whip the air box/filter off and crank the car over and look to see if the flap bobs up and down, i would almost guarantee you have an air leak!! In which case, the flap won't move

 

If i push the flap down will the fuel come out of the already undone injector pipe union??

 

as above try getting someone to turn the engine over whilst u press the flap down a couple of times

see if there any resistance this should get your fuel upto the injectors!

 

Iv,e got the same problem on my s1 but when i push the flap down still nothing happens, it has fuel at the cold start valve but not at the injectors

 

Right,just been down and tried it.No joy.I took out the injector,rested it on the rocker cover.Pushed the flap down and turned it over.No fuel spraying out of the injector.Engine does run for about 1 .1/2 seconds.


ANY IDEAS?

 

i,m getting exactly the same been workin on it all day and have got nowhere was wondering if it is the presure thing on the side? is there any way of testing it?

 

you need to push the flap down when you are turning the engine over or bridge the fuel pump relay

 

That,s what i just did,turned it over while the flap was being pushed down,but still nothing coming out of the injector. FUCKING M..F.I



Could it be the FUEL E.C.U? or are we defo talking the FUEL METERING UNIT

 

can u feel pressure on the paddle when pushing it down?

 

put the pipes back on and crank the car over. get somebody to see if the plap moves while you cranking, if not you have an airleak somewhere. if it moves then unit prob fucked

 

To both of you:

If you get no fuel out of the injectors when the pump is running with the flap depressed then there is a problem obviously.

Try pulling the plug off the EMPA and seeing if you get fuel to the injectors then.

 

will try that later does the EMPA just control the fuel pressure to the injectors? because there is pressure at the cold start valve

 

Ah right well in your case then theres obviously something a little simpler up

Undo the cold start valve pipe and bridge the pump, if nothing comes out i'd 99.9% say its the pump at fault (or no petrol in the tank )

 

There is plenty of fuel coming out of the cold start pipe tank is full it was running ok one day then the next it wouldn't start it just runs for about a second or two then cuts out starting to pul my hair out now

 

I thought you just said there was nothing at the cold start valve?

 

Do you know what voltage the EMPA needs to work, or how it works is there any way to check it

 

I don't know the voltage no. It will be AC anyway, not something you could easily check on a meter either.

It allows on boost enrichment aswell as over-run shut off.

Pull the plug off, see if you get fuel at the injectors then......

 

ok will do that thanks alot for your help will reply later with any news

 

Right i,ve been out this morming to have a look at it .A bit of joy at least.If i press the flap down and hold it the engine runs,but very roughly like it,s runnung on 2 or 3 cylinders.Let the flap up and it cuts out.???



So it seams the metering unit is metering the fuel,but not very well.Just want to confirm with anyone before i splash the cash.

 

In that case, as i said further up, crank it over and look for the flap bobbing up and down.

I doubt it will do this, which means you have an air leak

 

Does bob up and down slighty,about 6mm.Have checked for air leeks on breather pipes e.c.t..Surely it should run with an air leak if you keep the revs up?



Also fuel doesn,t come out of the injectors even when flap is pushed down.I,ve tried every thing to get the fuel out of the injectors but no joy.If i had an air leek,wouldn,t fuel still come out of the injectors?

 

Right, if the flap bobs up and down, you don't have an air leak.

Have you tried unplugging the EMPA as i said above?

 

Isnt it only 16i's that have fuel shut off on over-run? (as the dash lights indicate )

 

No you tart, thats econo lights And they tell you when you're ramping the fuck out of it (which is failry obvious when your right foot is planted on the floor anyway )

Pretty much every car with electronic fuel control shuts the fuel off on over-run to save fuel, even XR3i's do that

 

Bollocks you fudd, one light is permanently on (red) iirc and when you lift off, the other light lights (green) up to let you know the fuel cut off is working!

"The fuel injection was Bosch K-Jetronic with fuel saving decelaration fuel shut off valve. The decelaration fuel cut off valve sensed decelaration and shut down the fuel delivery system between pre-set rev limits. "

taken from turbosport, ive never heard/read/saw anything to say an RS turbo or XR2i has it. . infact im 95% sure it was significant to the 16i, i'll confirm it when my pal comes online, he restored his old 16i and knows everything their is to know about them

 

Davvy, you cock sucker

MFI XR3i's have a shut off valve, which bypasses the air flow from the flap, and cuts back in at around 1500rpm. It only cuts the fuel if the engine speed is above 1500RPM, and if the throttle is fully closed (hence the little wire MFI XR3i's have on the throttle housing)

MFI RST's, have the fuel shut off on over run by the EMPA, as is the full boost enrichment (only KE can give additional fueling increases in this manner where as K Jetronic cannot)

Anything like a XR2i with EFI will always have fuel shut off on over-run, controlled by the ECU not opening the injectors.

Econo lights on an RS1600i and anything else with them are merely pretty flashy lights, read any Ford handbook, look at any wiring diagram with them on.

2 bulbs, connected to 2 vacuum switches.

And, as quoted from my original Orion Operators Guide

Econolights (Where fitted)

For maximum fuel economy, endeavour to drive in such a manner that both lights (particularly the red one) only illuminate momentarily, or not at all.

Amber warning light: Illuminates when the car is driven less economically

Red warning light: Illuminates when the car is driven uneconomically

And just to totally destroy you, heres the picture evidence





I win

 

who is this cunt anyway?

It doesnt say anything about that being a 16i dash, it has a clock, so it's not even got a rev counter

 

AFPMSL

I was taught by the best (you)

 

Slow on the edit there

i can post more pretty pictures if you please?

 

No thanks, think we've ruined this boys topic enough, not that im giving in or anything

 

Worst cop out ever but so be it

 

i had a similar prob, it was the fuel pump. it was giving the system pressure on priming but not enough flow to keep the engine going.


i would try taking the fuel line to the filter off and see what the pumps giving

 

Right,took the EMPA (the one with 2 wires,not 3)made no difference.Also took off the union at the filter and cranked it over,petrol chugging out all over the place.Am convinced it is the metering unit at fault,not distributing the fuel correctly.Goes into the metering unit but doesn,t come out and go to the injectors.


COME ON SAFECHAV,SORT IT OUT What do you think?could it be the fuel pump???

 

Right, well you've proved the pump is sending fuel, its unlikely but there is
a chance the pump might not be generating enough pressure.

The EMPA could be fucked inside and not allowing the fuel to pass, or it could be the metering unit but they usually over fuel or leak, not stop supplying fuel.

Do you know anyone with an RS that would lend you their EMPA for a simple swap and test?

 

All my mates have sold there rs turbo,s and got RELIABLE cars Did want to drive it to FORD FAIR,but looks like i,ll be making a few purchases for it instead.Will let you know what the FUCK it was after sunday,but thanks for all the advice.

 

Don't give up get it sorted and take it to Ford fair!!

Im going to be going. although its looking like on my larry at this rate

You're not all that far away

 

Don,t think i will be able to sort it before FORD FAIR .Will get the parts from there and get it done sunday evening.Just hope it is what i think it is.Will purchase new fuel pump and second hand metering unit Luckily iv,e got other transport to get there.