Hi,

Ive just bought a nice s2 took it to the rollers! this is when the trouble started i need a part off the fuel metering unit its a gray little box with a two bolt fixing and has a two or three pin connection!! can anyone help as i need a new one!!

Cheers
Ric.

 

Rare as rocking horse shit mate, i did have one till not that long ago when mines went screwy

If you cant get one buy a metering head off ebay (which i think there is one or two) and then pull the actuator off that and if you like your techy stuff try doing a rebuild on the meter unit.

If its any odds, the grey and black ones are the same.

best o luck

 

I got hold of one i bought a complete metering unit for 35quid BARGIN!!!! i bolted the part on and she fired up no probs then i shut her off to fit my BnM shifter then she wouldnt start after that???? anyone got any ideas why not??

Cheers,
Ric.

 

the fuel pressure needs setting.

 

Hows that done?? is it a long job sorry about all these questions am new to rs's but there awsome cars!!

Ric.

 

It is easily done, but also easy to do wrong.

The little box you have replaced is an Electro magnetic fuel pressure actuator. The black ecu u can see behind the heater box takes inputs from all the sensors in the engine bay. It then sends a signal to the EMFPA which varies the fuel pressure depending on engine and driving conditions.

It works by increasing or decreasing from a base fuel pressure. This base fuel pressure can be adjusted, and is different for prerry much every car/EMFPA. So you have fitted one of another car, and it's not right for yours.

Without fuel monitoring equipment, you never know what your actually adjusting to, which is never a good thing. The EMFPA actuator adjusts the fuelling across the whole of the rev range. There is also a 3mm allen screw by the metering head, which adjusts justs the idle fuelling. The car is not firing probably because the mixture is too lean.

Before you try adjusting anything, you should do a simple test. Take the airfilter off, and you will see the metering flap. Push it - it should move down an inch or so.

Now, get someone to crank over the engine. You should see this flap moving up and down a few mm. If it doesn't - the car will never start, and you have an air leak somewhere. If it is pulsing, then while someone is cranking, push it down a little more. I mean a LITTLE, it's very sensitive. If the car starts, or at least tries too, it means that your idle mixture is too weak.

 

Sounds like you no your stuff, the cars is in a garage at the moment the geeza is trying to sort it out tomorrow but he charges 35quid an hour!! so its not cheap but he knows his stuff like you mate i need to get my head in some books and keep off the stella hard twat!

Ric.