hi basically i bought a series 2 and it was missing the ecu and few little bits. got an ecu but it runs really rich and hardly starts, when it does start it chucks out loads of black smoke and can smell the petrol. Is there any way i can adjust the fuel? have tried adjusting metering unit but no good. When i disconnect the petrol pump it runs lovely for those couple of seconds so its gotta be the fueling. anyone help?

 

you tried unplugging the cold start injector (the blue one)?? Ive had this jam open before when i had rst's in the past.

 

You may well find your metering head is knackered, i had one that overfuelled on one cylinder. See if you can get the emissions down but if its reading eratically you could well need a new metering unit.

The cold start injector only operates when the key is held in the cranking position, so unplugging it wont make a difference because it doesnt spray fuel once the engine is running. And if its stuck open it will be because its knackered internally, not an electrical fault.

 

have you put the correct wires to the correct sensers on the back of the inlet

 

I have tried swappig the connecters around but still no joy, i bet it is something silly but dont know what!

 

Check you have all the wires connected on the battery, if you leave the small thin wires off they run like poo

 

yea checked that too. if i stop the fuel pump the engine runs as it should ror that 1 second so its definatly fuel prob

 

you can adjust the fuel fressure on the fuel pressure regulator but i wouldnt attempt this unless you have some way of measuring co... you will likely melt the engine on boost if you do~!

 

Hi,

The s2 fitted with mfi, does not have a adjustable fuel regulator as efi,
the fuel pressure can be played with through the fuel pressure actuator
connected to the metering unit, could be cold start valve or thermo time switch that runs the cold start valve, fuel pressure related which you need some decent kit to test primary and differential pressure hot and cold test, for KE system,
to see what is at fault ie regulator/ fuel pressure actuator/ metering unit(fuel distributor)
you could also have a bad coolant temp sensor which tells the ecu one of the ecu's what temp the engine is and it uses this as info for running the engine, loads of things really, you need someone who knows the system,
to check it out,

Regards Dave R.

 

bump! still no luck

 

Have you tried another metering unit?

 

hi all
sounds like the same problem i had could get my car to keep running after it got run a little changed everything even the cam as i was running std cam on chipped ecu any way my motor was running rich and kicking out black smoke when under load and stunk of petrol like you i tried to sort out the over fueling was told to pull out the multi plugfrom the fuel pressure acuator whilst the car is running and it run fine no fuel smell no black smoke and it run fine give this a go and see if it works if it does you could need a new pressure acuator hope this helps.[/u]

 

ah ile give that a go. forgive me for bein dunce but which one is the pressure actuater?

 

Hi,

The fuel pressure actuator is on the side of the metering unit, some are
grey and some black,(small square box with electric plug attached)
unplug the connector, when the engine is warm the current is zero,
but you need it for full load enrichment ect, so if it does run ok, you need
to check the system is giving the correct ma, voltage from start enrichment, warm up,etc. it may just be you need a new actuator,or CTS,
Also check the hose from the metering unit to turbo is tight & check the air sensor plate is not sticking in its travel
Regards Dave R.

 

hi
Rite, i spoke to an old fella who has done a lot of work on rst's and he says he is almost certain its the metering unit as it was sat around for a year or so the O-rings dry up inside and just fcuk them up. I did already buy another one but i recon its got same problem. So now i am goin to take my mates off his car and try it so i know for sure. mission!

 

That would be EXTREMELY coincidental to buy another metering unit with the exact same fault..........

 

thats what i thought but if both units have been sat with no fuel in then they will have same prob. I will know for sure once ive tried my mates which runs fine

 

I used a metering unit which had been sat out in the rain for over a year and it worked, admittedly it overfuelled on one cylinder but the car started and ran!

 

lol your just lucky! well im gonna try me mates then i will know then. I dont know what else to try

 

Try it, got nothing to lose have ya.

Im not convinced myself but its worth a shot

 

i will let you know

 

could it be the ecu? I bought the car without one so could i have bought the wrong one? theres loads of different ones for the erst aint there?

 

Unlikely, theres only 2 different fuel ECU's anyway

 

look on the back of the inlet manifold and see if a yellow plug is connected or snapped sounds to me like the fueling plug is knackerd

 

"fuelling plug" ??

 

sorry not fueling plug cold start he he rushing at work at moment

 

The cold start injector only sprays while cranking, it doesnt operate with the engine running.

 

but surely not having the rite ignition ECU aint gonna help is it?

 

the only real difference is the later ones require a knock sensor, they will work without one but the ignition curve is very flat due to massive retard, but its easy to bypass

 

got another metering unit and it works!! not perfect but just needs a tune.
now got a problem where it wont start once its hot! any ideas?

 

Could be losing its fuel pressure when you switch off

 

its ok now, just needs a good run and tune up. cheers mate