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2nd time failing emissions

 
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Old 10-29-2011, 03:33 AM
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2nd time failing emissions

hi everybody i have a h22a1(1995 Honda prelude) and it keeps failing emissions. very recently i replaced the spark plugs,dizzy cap and rotor,new dizzy,oil change,new fuel pump o2 sensor,cat,and i cleaned the egr ports in the intake manifold. The first emissions test was twice as much as the recommended limit (this was before i did all the mentioned repairs) the second was perfect except for hydrocarbons,it was high(spec is 1.200 my car is at 1.220) i ck timing at the dizzy and its perfect. Can the valve adjustment be a problem? or do i simply clean the hell out of it meaning sea-foam or the equivalent ? i have run out of ideas i ran the lude long enough to get it up to temp and still failed please help
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Old 10-29-2011, 03:38 AM
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Re: 2nd time failing emissions

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Originally Posted by flipmode303 View Post
hi everybody i have a h22a1(1995 Honda prelude) and it keeps failing emissions. very recently i replaced the spark plugs,dizzy cap and rotor,new dizzy,oil change,new fuel pump o2 sensor,cat,and i cleaned the egr ports in the intake manifold. The first emissions test was twice as much as the recommended limit (this was before i did all the mentioned repairs) the second was perfect except for hydrocarbons,it was high(spec is 1.200 my car is at 1.220) i ck timing at the dizzy and its perfect. Can the valve adjustment be a problem? or do i simply clean the hell out of it meaning sea-foam or the equivalent ? i have run out of ideas i ran the lude long enough to get it up to temp and still failed please help
Well... what about your exhaust?
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Old 10-29-2011, 09:50 AM
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Re: 2nd time failing emissions

my exhaust has no leaks and its brand new from the headers all the way back
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Old 10-29-2011, 12:23 PM
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Re: 2nd time failing emissions

That doesn't necessarily mean that it isn't doing it's job. Do you have a catalytic converter? That's the emissions bit on the exhaust, everything after the cat isn't for emissions.

Edit: I saw that you said you have a new cat. What kind of cat is it? Also, figure how rich you're running, that could help a bit.
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Old 10-29-2011, 01:16 PM
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Re: 2nd time failing emissions

An HC failure is usually an ignition problem -- high HC is nothing more than incomplete combustion. The one item you didn't say you replaced was spark plug wires -- those deteriorate electrically over time, especially as hot as it gets under a Prelude's hood, so your new dizzy may not be effectively transmitting the pulse to your new plugs. Get a good set of stock wires, and that may solve your problem.

It would also help to know where you are -- each state has different criteria for what you're responsible for if you don't pass emissions. Virginia, for example, has a cap on what you're required spend before they just give you a bye.
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Old 10-29-2011, 02:18 PM
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Re: 2nd time failing emissions

the plug wires for sure i will replace thank you i was thinking the same today.my cat is a high flow one from magnaflow also im in colorado they have a exempt but you have to spend over $700 at a shop not if you did it yourself witch sucks because i do all my own work thank you guys for the help
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Old 10-29-2011, 11:36 PM
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Re: 2nd time failing emissions

do all that was metioned and then give it an italian tune up. Just clean the **** out of the exhaust lol.
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Old 10-29-2011, 11:42 PM
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Re: 2nd time failing emissions

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Originally Posted by flipmode303 View Post
the plug wires for sure i will replace thank you i was thinking the same today.my cat is a high flow one from magnaflow also im in colorado they have a exempt but you have to spend over $700 at a shop not if you did it yourself witch sucks because i do all my own work thank you guys for the help
why do you have to pass emissions in colorado? for the past few years i have not had to do an emissions test when i have had to renew my tags.
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Old 10-30-2011, 09:27 AM
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Re: 2nd time failing emissions

will do the italian tune up lol.....in denver you have to get emissions done every 2 years i dont know how springs works but in weld county you have to get emissions on diesel trucks or cars gas vehicals are exempt thanks for all the good info guys im going back to the testing center on tuesday will update if i fail
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Old 10-30-2011, 02:47 PM
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Re: 2nd time failing emissions

That's pretty common in many states -- simple traffic density drives large municipal areas to testing. I'm torn...I'm just old enough to remember Los Angeles smog in the mid-'60s, so I believe the emissions controls are necessary, but in my experience, most states that implement testing do it half-hearted. There's no reason a decently-tuned car of any vintage shouldn't be able to pass emissions standards, but most places will give a pass to any smoking POS after punishing the owner a bit, or simply exempt older vehicles, no matter how poorly they run. It really becomes little more than a small, state-supported industry that accomplishes little.
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Old 04-15-2012, 10:17 PM
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Re: 2nd time failing emissions

I'm bringing this back because I'm still failing . My car also stalls out some times while driving I put in new spark plugs and wires adjusted my valves and still don't pass .timing is right on ,what could it be it don't have a mis can it be the fuel pressure regulator? I don't have codes no light is on also when it stalls it does it several times but if I turn the lights and blast the radio it won't die and it only happens when my car is hot my main relay is new ignition switch is also new
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Old 04-15-2012, 10:47 PM
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Re: 2nd time failing emissions

How's your timing belt/mechanical time?
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Old 04-16-2012, 12:09 AM
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Re: 2nd time failing emissions

Are u running on a stock air intake?
Get your codes checked! Yes you can get your code checked even if its not a 96 or newer. Is you're Cat still good?
Fuel Filter when was the last time you changed it?
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Old 04-16-2012, 07:36 AM
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Re: 2nd time failing emissions

Timing is perfect just replaced the timing belt ,I replaced the fuel filter about a year ago and I don't have any codes.I would hope my cats still good after replacing it only 4 months ago o2 sensors new coolant temp sensor is new dissy is new spark plugs wires new so are plugs I don't have any exhaust leaks or vacuum only thing I can think is my fuel milage sucks somethings got to ne wrong with my fuel system
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Old 04-16-2012, 07:46 AM
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Re: 2nd time failing emissions

how about bad valve seals and adjusting valves?

ever cleaned your injectors?
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Old 04-16-2012, 02:46 PM
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Re: 2nd time failing emissions

I have already adjusted the valve lash,I don't think I have a problem with the seals because my car don't smoke at all (can you replace these with the head on ) no I have not cleaned the injectors but I got a brand new set I will throw in there by Friday
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Old 04-18-2012, 10:26 PM
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Re: 2nd time failing emissions

I vote timing. Check it and check it again. I've installed multiple and sometimes installed the same one twice because timing was off. Just my two pennies.
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Old 04-18-2012, 11:05 PM
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Re: 2nd time failing emissions

quick fix pay off the emissions tester and there ya go.....

thats all I used to do when colorado was doing emissions test
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