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86 accord failed smog... HELP/ADVICE
took it to get smoged from my annual 2 year check and it failed....
the emission control systems all passed but the idle emission test didn't oh by the way this is for a california smog At Idle HC: Max 120 Me 204 CO: Max 1.00 Me 1.88 At 2500rpm HC: Max 150 Me 77 CO: Max 1.20 Me 1.73 Yeah so i have no idea what could be the cause any ideas? i'v heard check air filter, fuel filter, spark plugs but i'm trying not to spend a lot of cash on this... Suggestion? |
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#2
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86 accord failed smog... HELP/ADVICE
Aaron wrote:
> took it to get smoged from my annual 2 year check and it failed.... > the emission control systems all passed but the idle emission test > didn't oh by the way this is for a california smog > At Idle HC: Max 120 Me 204 > CO: Max 1.00 Me 1.88 > At 2500rpm HC: Max 150 Me 77 > CO: Max 1.20 Me 1.73 > > Yeah so i have no idea what could be the cause any ideas? i'v heard > check air filter, fuel filter, spark plugs but i'm trying not to spend > a lot of cash on this... Suggestion? This a carb or FI model (the fuel-injected ones have an "i" tacked on the model name, like "EXi")? You should always put in a new air filter and plugs when going for an emissions test - if they're bad enough that they'll fail you the test, they're probably costing you fuel economy as well, especially on a carbed car. A clogged fuel filter will cause the car to run rich, failing the test and wasting fuel. Bad plugs can cause misfires, failing the test and also wasting fuel. It won't take long for that to cost you more than the price of the filter and plugs. An oil change is also highly recommended before a smog test. |
#3
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86 accord failed smog... HELP/ADVICE
See
http://www.interro.com/techgas.html#anchoreleven , especially "Causes of Excess Emissions." The section on high CO blames the engine control system. The section on high HCs points to fouled plugs and/or old ignition wires. www.interro.com/techgas.html#anchoreleven Per the above sites and what they say about high CO and HCs, I would start by replacing the PCV valve, spark plugs, and wires. You say you do not want to spend a lot of cash, but it sure sounds like your poor ol' Honda would benefit a lot from a tuneup. For one thing, your fuel mileage might increase a lot. For another, the life of other, more expensive ignition system parts can increase. Strongly consider performing all of what's listed at http://home.earthlink.net/~honda.lioness/id11.html . "Aaron" > wrote > took it to get smoged from my annual 2 year check and it > failed.... > the emission control systems all passed but the idle > emission test > didn't oh by the way this is for a california smog > At Idle HC: Max 120 Me 204 > CO: Max 1.00 Me 1.88 > At 2500rpm HC: Max 150 Me 77 > CO: Max 1.20 Me 1.73 > > Yeah so i have no idea what could be the cause any ideas? > i'v heard > check air filter, fuel filter, spark plugs but i'm trying > not to spend > a lot of cash on this... Suggestion? > |
#4
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86 accord failed smog... HELP/ADVICE
If you are in California, Check out the CAP program
http://www.smogcheck.ca.gov/ftp/pdff...P%20program%22 You apply and get approved to use one of a list of authorized garages. You pay $100 and they will do up to $500 worth of work to get you to pass. Usually, bad O2 sensors are the cause. If they are over 50k miles, they are suspect. You can get them pretty cheap but the install can be a pain. It often requires a special wrench and skill at cracking siezed nuts. You could need a new CAT as well. My CAT and O2 sensors on my 89 accord went bad for the first time at about 200,000 miles. Good luck. -c Elle wrote: >See > >http://www.interro.com/techgas.html#anchoreleven , >especially "Causes of Excess Emissions." The section on high >CO blames the engine control system. The section on high HCs >points to fouled plugs and/or old ignition wires. > >www.interro.com/techgas.html#anchoreleven > >Per the above sites and what they say about high CO and HCs, >I would start by replacing the PCV valve, spark plugs, and >wires. > >You say you do not want to spend a lot of cash, but it sure >sounds like your poor ol' Honda would benefit a lot from a >tuneup. For one thing, your fuel mileage might increase a >lot. For another, the life of other, more expensive ignition >system parts can increase. Strongly consider performing all >of what's listed at >http://home.earthlink.net/~honda.lioness/id11.html . > >> took it to get smoged from my annual 2 year check and it >> failed.... >[quoted text clipped - 11 lines] >> not to spend >> a lot of cash on this... Suggestion? -- Message posted via CarKB.com http://www.carkb.com/Uwe/Forums.aspx...-cars/200609/1 |
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86 accord failed smog... HELP/ADVICE
"los via CarKB.com" <u26415@uwe> wrote
> Usually, bad O2 sensors are the cause. If they are over > 50k miles, Maybe put a time limit on them, too. :-) > they are > suspect. You can get them pretty cheap but the install > can be a pain. Hey now, my impression (from removing my old 91 Civic's sensor a few times and reports here) is changing out the O2 sensor is almost always very easy. One may borrow an O2 sensor wrench from Autozone for a fully refundable deposit. A little PB Blaster (worst case), and that sensor comes off no problem. I do second that a new, OEM O2 sensor for older Hondas is cheap. It's under $40 total at https://www.automedicsupply.com/ . I used the latter a few years ago. Service was great. The new (OEM Denso) O2 sensor works great. 40+ mpg most of the year, suburban driving and 45+mpg at 65 mph cruise control windows open summer driving. |
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