Leaking Injector?

[Rekin]

Hey,

I noticed that after quite a spirited drive, the next morning the car was dropping to 200rpm when clutching in to come to a stop and then reving back up to 750rpm. Then once idling the car would feel a bit rough.

Had a poke around the engine bay and saw this

Injector no.1 (the one closest to the radiator?) seems to be covered in dirt and I can see yellow stains around the plenum.

Being at the front, it would no doubt pick up dirt coming through the car, but just want to confirm this aint no normal dirt build up?

I put in the injectors about a year ago and had them flow tested and new seals.

Would this be related to my near stalling when coming to a stop and then a rough idle? Its not as rouch as a disconnected cylinder, but you can feel it sort of hunting.

Would this be injector leaking? Or the seal? Or not pushed in enough?

Thanks

[mad082]

i think the stalling issue may be more caused byt the IAC than the injector, but i could be wrong. the yellow could be a bit of spilt oil from an oil change or something like that.

[Rekin]

i think the stalling issue may be more caused byt the IAC than the injector, but i could be wrong. the yellow could be a bit of spilt oil from an oil change or something like that.

ive stripped down the IAC and gave it a proper clean thats why im not leaning towards it.

IAC controls the air flow in the air/fuel mix. Im thinking that if the injector is leaking, thats causing problems on the fuel side of the air/fuel mix which should be similar to a IAC problem?

[some_cs_student]

On the old R31 (injector leaks are common) yellow around the injector was a sign of a leak, and it idled poorly / did not accelerate well.

I would clean it and then see if it leaks again after that...