HELP!!! Emissions are HIGH..!

[mikemike180]

Can anyone help please
 
Put my (93) fd in for an MOT the other day and it failed big time on the emissions
 
CO is supposed to be 3.500 but it was actually 7.739
HC is supposed to be 1200 but it was actually 2702
 
Everything else was fine
 
Any help would be much appreciated

[philiwily]

Where are you?

[mikemike180]

why?
 
North of Scotland

[philiwily]

I know a man lol. Do you have any mods? Have you changed the plugs lately as this can make a big differance.

[logicalChimp]

Hmmm

Take it for a good hard run to warm the engine up nicely before the test (and get them to do the emissions test at the start, when everything is nice and warm)

New plugs

check the fuel map (if using a mappable ECU)

Check the air-pump (if you\'ve got it)

Fit a cat pipe (if running decat)

[Kieron]

Slip the guy some $$ :Giggle

[Nik da Greek]

If it\'s still got an air-pump, I\'d suspect that going west could well be the culprit. Those are almost the exact same readings mine had when the airpump packed up earlier this year

[mikemike180]

how much money would i be looking at to change the tips? i\'m pretty new to the RX7
 
The airpump was just replaced but it was second hand so i dont know if its ok or not, i think it is...
 
whats the rumours going about saying i dont need to have it emissions tested?

[gmogle]

Have you got bigger primary injectors and a decat ?

[mikemike180]

Its been decated but apart from that its pretty standard

[Nik da Greek]

You do need to have it emissions tested, but because of it\'s age, it\'s a pre-cat test, which is where the 110o ppm hydrocarbon and 3.5% Co levels come from. Sorry, dude. If it was a proper catalysed emissions test, you\'d never stand a cat in hell\'s chance (groan!) of getting through it.

The airpump is controlled by a driver in the ECU. Mine had burned out, which does apparently happen sometimes. You can tell if it\'s working, the electromagnetic clutch on the pump should be engaged from idle and disengage at round about 3,000 rpm.

Getting tips replaced? That\'s an engine rebuild job, assuming you\'re referring to the apex seals? Which costs a lot.....why do you think you need to change the tips?

[Nik da Greek]

Its been decated but apart from that its pretty standard

Doh! :Hammer Well, there\'s yer problem! No point having a running airpump if there\'s no cat for it to pump air into!

[mikemike180]

mmm...lol let me get back to you on that, it might not be decated...

[Jono FD3]

nik has hit the nail on the head there.... no cat, no function for the air pump resulting in high emissions, but your\'s shouldn\'t be put through a cat test anyway as it is pre 95, but it should go through a std emissions test at an MOT!

Jono

[mikemike180]

Sorry guys its not been decated