I know its not the right thing to do

[turboshed]

But to get through the MOT as i have tried many things and still the reading im getting for COs is just under 6%. Could i unblock the hole in the turbo to AFM pipe that i blocked when i got a catch tank? I am hoping this would lean out the mixture enough. Im running stage 3.

thanks

[voodoo_melon]

Facelift of pre-facelift? If it's a prefacelift lean it right off using the screw on the afm.

Does your fpr have a vacuum on it at idle?

[turboshed]

prefacelift but its stage 3 so i have a Z32

How will i know if the FPR has vacumn at idle?

[voodoo_melon]

Unplug the rubber vacuum hose off it and stick your finger on the end... if it's sucking it's ok, if not there's a problem somewhere.

[turboshed]

just been ou to try it and theres a sucking on the plenum side but nothing on the fpr side is that ok or not?

[SX Drifting]

Sucking on plenum side and not FPR is correct, Do you have any other running problems?

[turboshed]

not that i have noticed all seems to be ok none that spring to mind

[turboshed]

do you think then if i unblock the hole that was linked the cam covers to the standard afm to turbo pipe that this would lean the mixture enough from nearly 6% co to the within the 3.5% needed to pass

[voodoo_melon]

Do you still have the hot start solenoid? That will stop the vacuum getting to the fpr for 3 mins iirc. If it's there, bin it... have a look for hot start solenoid bypass on here.

There should definitely be a vacuum on it though or the fuel pressure will be 1 bar too high.

[turboshed]

well i got it and disconnected it a while ago (hopefully correctly) also car runs around 60oC when warm too

[voodoo_melon]

If the hot start solenoid has been dealt with the fpr should be linked straight to the back of the plenum...

[turboshed]

yer goes straight from the FPR into the back of the plenum.......

[voodoo_melon]

Ok well as long as there's a vacuum on the hose then that's ok... could be the fpr but there's more things to try before changing that as it's a bit of a tight squeeze.

Have you checked the ecu temperature sensor? Should be 2.5kOhm at 20C and 0.3kOhm at 80C.

Check all the stuff mentioned here (http://www.sxoc.co.uk/vbb/showpost.php?p=1307641&postcount=6) :D

Also make sure it's properly hot and razz it around a bit before you take it in for it's mot :smash:

[SX Drifting]

The best way to check is going to be with a fuel pressure gauge and taking a reading.

[turboshed]

yer checked the engine temp sensor got about 0.36 at about 60-65oC so i think thats ok. Its really starting to do my head in now. Could it be the Z32 AFM? Set TPS and idle up so i know thats ok

[turboshed]

i did notice today the near the fuel filter smells of fuel and on closer inspection the top of the fuel filter is slightly damp with fuel i think but i know its not coming from the fuel filter hose as thats really tight looks as if its coming from the seal round the top of the fuel filter

[voodoo_melon]

As a last resort you could stick a clamp on the fuel line :wack:

On a more serious note you should sort out that leak, don't want fuel leaking however little there is :no:

[turboshed]

yer might look at the fuel filter tomorrow if its not dark after work. Could the filter be part of the problem?

[voodoo_melon]

To be honest I doubt it. If anything it'd restrict the flow if it was blocked but I don't see how it'd cause overfuelling.

[turboshed]

yes silly me. So do you think unblocking the hole that would normally have a breather connected to the cam covers stc in the standard afm to turbo pipe will lean out the mixture? Hope you can understand that

[SX Drifting]

Your better off finding the cause. It's not suppose to run that rich so it won't do much good bodgeing for the MOT

[turboshed]

yer i know i do hope to find the problem but i need to use the car for work and if the car has no MOT the its not good whereas if i can get it through it can be fixed after hopefully if i can find the fault

[voodoo_melon]

If unplugging the hole gets the emissions down enough to pass the MOT then might as well go for it so at least you can keep it on the road.

[turboshed]

Now im compltely confused. when bavk to MOT garage today thinking that as i unblocked the hole it would be alot better as the .

thibk it might be something to do with the airflow meter possibly as when i disconnect the plug into it, it takes 4-5 seconds for the revs to change.