Yoon

My 924 has moved from Australia to Korea.

My 924 failed the smog check because of too much CO ( about CO 2.7% - Max is 1.2%).

Other smog is pass.

My 924 has not Catalytic Converter because
my 924 is Australia 98RON lead fuel version.

I have installed a used Catalytic Converter and
I'm use a 98RON Premium Unlead.
But Co is still 2.7%.

How to decrease Co level ?

Thanks!

CBass

Get good spark plugs

Could be bad timing too. No reason you can't put a couple of cats on it, and remove them later.

Yoon

Thanks for your answer ^^

I have put new spark plugs and new distributor
cap & rotor.

Timing is ok. Engine run very smooth.

Everyone said that CATS help reduce CO and
I put on that for under regulation.

Is that problem of K-Jet CIS system?

How to decrease CO ??
HELP ME.~~

CBass

ask for help at <a href="http://www.924board.org" target="_blank">www.924board.org</a>

I think it would be a fault of one or more of a few things.

1) weak ignition spark

2) bad timing

3) bad emissions equipment(air pump, cats, charcoal filter)

4) too rich of a fuel mixture(thats not usually a problem with CIS)

5) a serious vacuum leak somewhere.

does it start hard, idle rough, or lose power high in the rev range?

adrian jay

q

BigPorscheGuy39

Go out and buy 10 gallons of Toluene (Tekron) and put some in your tank...about 5 gallons should do but you've got lots just in case...get your mechanic to test it... <img src="graemlins/icon501.gif" border="0" alt="[icon501]" />