running rich

[quattronutter]

mine was 3b yes,with rs2 turbo,black recaro recliners orange mb quattro dash and mb 5spd box,check your idle valve too,to make sure its working,just a case of going through the lot if you cant vag com it,its very easy to overlook a broken wire in the loom after such changes,been up that road a few times now....

[volcano rs]

i'm almost 100% thats the car.i'll try my rs2 injectors again this problem only started since i took them out or i might have disturbed the wiring for the injectors . i haven't really messed with anything else that i can think of and it was running fine like i said except the smoke .

[quattronutter]

im glad someone managed to finish it off,might do another one in a few yrs if there are any panels about still,either that or a lightweight integrale...

[volcano rs]

no he hasn't he has actually stripped it to bare shell he is changing the colour and fitting a roll cage and making it a track car .it was on its side on a stand . everything is off the car .

[volcano rs]

here we go again boys . someone suggested the water temp sensor rear of the head could cause running problem when cold anyone know the part number for aby type and roughly how much and is it dealer part only? .

[Mark Halligan]

Jamil

is it defo black smoke from running rich? If you idle a newly built motor for too long without bedding those rings in, you can glaze the bores and burn oil. Not what you want to hear I know..................

[volcano rs]

hello mark it seems to clear when it warms up and it definetly smells like rich mixture i can tell the difference between oil burning smell and fuel mixture .also got an air lock in the water system which i cant seem to get rid of its in the heater matrix.heater is blowing cold air. the pipe to heater matrix is slightly warm and the one coming out from heater matrix is cold the valve is ok any ideas ?

[Mark Halligan]

the pipe to heater matrix is slightly warm and the one coming out from heater matrix is cold the valve is ok any ideas ?

Is the matrix blocked, can you flush it through with a hose to check?

[volcano rs]

i can try not much room to get my hand in there but it has to be done . i have to sort this out so i can take it for a run .thanks

[twoqu]

here we go again boys . someone suggested the water temp sensor rear of the head could cause running problem when cold anyone know the part number for aby type and roughly how much and is it dealer part only? .

Could see how that might effect things the other way round. If it told the ecu that the engine is cold when it was hot, there would be a certain amount of enrichment.
Obviously if its cold anyway.....
Still don't think you shouldn't run those RS2 inj yet. They must be overfuelling. The fact they appear to mask the problem is irelevant. Need to find the prob! Would have thought if you had a ign prob that more fuel would make it worse

[volcano rs]

hi twoqu i've kept faith in s2 injectors for now . i used loads of wd40 on all the connectors, maybe there was moisture on connectors. it only runs a bit rough on idle .when i rev it a bit it doesn't miss and seems ok .

[twoqu]

hi twoqu i've kept faith in s2 injectors for now . i used loads of wd40 on all the connectors, maybe there was moisture on connectors. it only runs a bit rough on idle .when i rev it a bit it doesn't miss and seems ok .

Well that progress. It has been wet lately! Might be worth going around all the critical engine ones to make sure, especially the maf one. Not sure whether you can use WD or are better off with some kind of contact cleaner.
Thats what I was saying before about rushing. You need to methodically check everything. Although I can't see how getting a good contact at the injectors would stop it running rich.

[volcano rs]

finger seems to point to the sensor behind the head.

[newsh]

finger seems to point to the sensor behind the head.

No doubt about this, it can make the engine run rich.

[AAH!]

Dirty injectors can make it run rich.