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T00T3R · 04-12-2013, 10:48 AM

I know this has been asked and I have read a bunch of threads about it first but I just want to know what the logical/cheapest order of fixing things would be to get my car to pass.

So I have a 97 Toyota Mark II which I recently imported, 1JZGTE, and it has a cat back, apex'i power intake and that's it in terms of engine related mods.

I went for aircare today and and I passed the CO and NOx tests with flying colours but I failed HC with 0.8980 and allowable is 0.5. From what I've read, this is due to un-burnt fuel....so what should I replace first?

Should I replace the spark plugs? Maybe install the stock intake back into the car?

Thanks for any help!

PS: Oil/filter was changed 4000kms ago with fully synthetic 10w30, spark plugs were changed around the same time, coils I believe are factory, original ones from JDMland, and I drove the car for about 1hr prior to the test, using Shell 91.

04-12-2013, 10:48 AM	#1
T00T3R NEWBIE ACCOUNT! Join Date: Apr 2008 Location: Vancouver Posts: 21 Thanked 0 Times in 0 Posts Failed 0 Times in 0 Posts	Aircare Question...FAIL HC I know this has been asked and I have read a bunch of threads about it first but I just want to know what the logical/cheapest order of fixing things would be to get my car to pass. So I have a 97 Toyota Mark II which I recently imported, 1JZGTE, and it has a cat back, apex'i power intake and that's it in terms of engine related mods. I went for aircare today and and I passed the CO and NOx tests with flying colours but I failed HC with 0.8980 and allowable is 0.5. From what I've read, this is due to un-burnt fuel....so what should I replace first? Should I replace the spark plugs? Maybe install the stock intake back into the car? Thanks for any help! PS: Oil/filter was changed 4000kms ago with fully synthetic 10w30, spark plugs were changed around the same time, coils I believe are factory, original ones from JDMland, and I drove the car for about 1hr prior to the test, using Shell 91. Last edited by T00T3R; 04-12-2013 at 10:57 AM.