hello to all

has anyone put a small hole in thier aiv pipe to stop the gurgling will it have any side affects ti the car in any way.

cheers chris

I've had all my Avi's removed mate, that'll get rid of the gurgling!

Oh and this is just half of it!!!!!!!

 

hello to all

has anyone put a small hole in thier avi pipe to stop the gurgling will it have any side affects ti the car in any way.

cheers chris

 

Yes, I've done this and (a) the gurgling has stopped and (b) there have been no ill effect on the car.

 

There are those who remove the AIV's entirely without bad effects on the running of the car.

 

HTH

 

Dan

i tried to remove some avi's off my pc the other day as well :x: :D

i tried to remove some avi's off my pc the other day as well :x: :D

yeh me too some jpegs some square pegs and a couple of round pegs too.

 

any way where is the best place to drill the holes and what size..

call me dumb if you like but what are AVIs on the car that is?

call me dumb if you like but what are AVIs on the car that is?

they are aiv's not avi's :headvswal

As for the AIV (air injection valves) 'gurgling', they are in the front fender wells behind the plastic shielding at the rear of the front tires. Very few 90-92 ZXs have escaped a failure of these. Symptoms include the 'gurgling' sound at idle that stops just off idle and returns on decel back to idle. Also the car will fail the idle portion of most smog inspections, since the ECU adds 7% more fuel when they operate so the extra air they pump to the catalytic converter has some fuel to burn to keep the cat up to temp. If the AIVs are not sucking air into the exhaust the fuel just passes through making things worse then ever. The fix is to try to clean and align the reeds in the AIVs, replace reeds, or replace the AIVs as an assembly.

thanks you spotter.lol

so where is the best place to drill the hole then.

i would imagine it would be at the bottom of the 'U' where the pipe bends back up. this is where the water tends to sit.

As for the AIV (air injection valves) 'gurgling', they are in the front fender wells behind the plastic shielding at the rear of the front tires. Very few 90-92 ZXs have escaped a failure of these. Symptoms include the 'gurgling' sound at idle that stops just off idle and returns on decel back to idle. Also the car will fail the idle portion of most smog inspections, since the ECU adds 7% more fuel when they operate so the extra air they pump to the catalytic converter has some fuel to burn to keep the cat up to temp. If the AIVs are not sucking air into the exhaust the fuel just passes through making things worse then ever. The fix is to try to clean and align the reeds in the AIVs, replace reeds, or replace the AIVs as an assembly.

 

I've always wanted to know what that f***ing gurgling is :D Wahey now just to work out how to remove the begger

My right hand AIV appears to be gaping where the two wedge sections join (if that makes sense), if this whole system can be removed it sounds good, but what are the implications for the MoT without it on a 1991 car?