92 Camry V6 3.0

Please help,

My 92 Camry V6 3.0 has failed emission test twice for the same resaon,
which is low HOx/252 ( standard should be around 937) and high HC/180 (
standard should be around 124) and high CO%/3.52 ( standard should be
around 0.69). Prior to emission test I have repaird the following
I have new Timing belt, spark plus, wires, 2 main belts, radiator,
radiator cap, water pump, thermostat, power steering pump, power
streering high pressure hose, lower engine mounts, sway bar bushing,and
PVC valve

<hannaari@optonline.net> wrote in message
news:1154805828.910978.13350@i42g2000cwa.googlegroups.com...[color=blue]
> Please help,
>
> My 92 Camry V6 3.0 has failed emission test twice for the same resaon,
> which is low HOx/252 ( standard should be around 937) and high HC/180 (
> standard should be around 124) and high CO%/3.52 ( standard should be
> around 0.69). Prior to emission test I have repaird the following
> I have new Timing belt, spark plus, wires, 2 main belts, radiator,
> radiator cap, water pump, thermostat, power steering pump, power
> streering high pressure hose, lower engine mounts, sway bar bushing,and
> PVC valve
>[/color]

Where are you located?

I have never heard of HOx. Assuming you mean oxides of nitrogen (NOx), your
vehicle did not fail because of low NOx because lower is better.

The high HC and CO could be caused by an ignition system misfire, which
could be related to the spark plugs and spark plug wires you recently
replaced. Did you use OEM spark plugs and wires? If not, I would start by
using OEM plugs and wires.
--

Ray O
(correct punctuation to reply)

Dear Ray,

Yes I did not fail because of low NOx, I failed becuase of high HC and
CO, I am located in New Jersey. and my plugs and wires are original
from Toyota dealer, also forgot to mention I replaced the Distributor.
Ray O wrote:[color=blue]
> <hannaari@optonline.net> wrote in message
> news:1154805828.910978.13350@i42g2000cwa.googlegroups.com...[color=green]
> > Please help,
> >
> > My 92 Camry V6 3.0 has failed emission test twice for the same resaon,
> > which is low HOx/252 ( standard should be around 937) and high HC/180 (
> > standard should be around 124) and high CO%/3.52 ( standard should be
> > around 0.69). Prior to emission test I have repaird the following
> > I have new Timing belt, spark plus, wires, 2 main belts, radiator,
> > radiator cap, water pump, thermostat, power steering pump, power
> > streering high pressure hose, lower engine mounts, sway bar bushing,and
> > PVC valve
> >[/color]
>
> Where are you located?
>
> I have never heard of HOx. Assuming you mean oxides of nitrogen (NOx), your
> vehicle did not fail because of low NOx because lower is better.
>
> The high HC and CO could be caused by an ignition system misfire, which
> could be related to the spark plugs and spark plug wires you recently
> replaced. Did you use OEM spark plugs and wires? If not, I would start by
> using OEM plugs and wires.
> --
>
> Ray O
> (correct punctuation to reply)[/color]

<hannaari@optonline.net> wrote in message
news:1154892699.623845.5330@n13g2000cwa.googlegroups.com...[color=blue]
> Dear Ray,
>
> Yes I did not fail because of low NOx, I failed becuase of high HC and
> CO, I am located in New Jersey. and my plugs and wires are original
> from Toyota dealer, also forgot to mention I replaced the Distributor.[/color]

Hydrocarbons (HC) are unburnt fuel, and so high HC means high amounts of
unburnt fuel, either because the fuel is not burning completely or the
mixture is too righ - that is, the fuel ratio is too high for the amount of
air

High Carbon Monoxide (CO) comes from a fuel mixture that is too rich.

The combination of high HC and CO could be caused by a misfire - one or more
spark plugs are are not firing; incorrect ignition timing, or a righ fuel
mixture.

How does the engine run at idle? Does it run smoothly? Does it idle
normally or fast after it is warmed up?

Why did you replace the distributor? How long ago was it replaced?

What is the condition of the air filter? If you shine a light through it,
can you see light?

What is the condition of the black plastic tube between the air filter and
the throttle body? Is it free of cracks or
holes or leaks where it connects to the air filter housing or throttle body
housing?

A competent technician or your Toyota dealer can also check O2 sensor
operation since it controls the air/fuel mixture.

--

Ray O
(correct punctuation to reply)
[color=blue]
> Ray O wrote:[color=green]
>> <hannaari@optonline.net> wrote in message
>> news:1154805828.910978.13350@i42g2000cwa.googlegroups.com...[color=darkred]
>> > Please help,
>> >
>> > My 92 Camry V6 3.0 has failed emission test twice for the same resaon,
>> > which is low HOx/252 ( standard should be around 937) and high HC/180 (
>> > standard should be around 124) and high CO%/3.52 ( standard should be
>> > around 0.69). Prior to emission test I have repaird the following
>> > I have new Timing belt, spark plus, wires, 2 main belts, radiator,
>> > radiator cap, water pump, thermostat, power steering pump, power
>> > streering high pressure hose, lower engine mounts, sway bar bushing,and
>> > PVC valve
>> >[/color]
>>
>> Where are you located?
>>
>> I have never heard of HOx. Assuming you mean oxides of nitrogen (NOx),
>> your
>> vehicle did not fail because of low NOx because lower is better.
>>
>> The high HC and CO could be caused by an ignition system misfire, which
>> could be related to the spark plugs and spark plug wires you recently
>> replaced. Did you use OEM spark plugs and wires? If not, I would start
>> by
>> using OEM plugs and wires.
>> --
>>
>> Ray O
>> (correct punctuation to reply)[/color]
>[/color]

Dear Ray,

The engine runns OK at idle, when the engine warm up the RPM at idle
goes down, I replaced the distributor about a year ago, it was part of
the tune up the dealer recommended. also I have 167k miles on my car,
the air filter is OEM new replaced about 2 weeks ago. the plastic tube
has been replaced about a year ago also, from the junk yard from 1993
Toyota car, and it has no cracks at all.

Thanks in advance.
Ray O wrote:[color=blue]
> <hannaari@optonline.net> wrote in message
> news:1154892699.623845.5330@n13g2000cwa.googlegroups.com...[color=green]
> > Dear Ray,
> >
> > Yes I did not fail because of low NOx, I failed becuase of high HC and
> > CO, I am located in New Jersey. and my plugs and wires are original
> > from Toyota dealer, also forgot to mention I replaced the Distributor.[/color]
>
> Hydrocarbons (HC) are unburnt fuel, and so high HC means high amounts of
> unburnt fuel, either because the fuel is not burning completely or the
> mixture is too righ - that is, the fuel ratio is too high for the amount of
> air
>
> High Carbon Monoxide (CO) comes from a fuel mixture that is too rich.
>
> The combination of high HC and CO could be caused by a misfire - one or more
> spark plugs are are not firing; incorrect ignition timing, or a righ fuel
> mixture.
>
> How does the engine run at idle? Does it run smoothly? Does it idle
> normally or fast after it is warmed up?
>
> Why did you replace the distributor? How long ago was it replaced?
>
> What is the condition of the air filter? If you shine a light through it,
> can you see light?
>
> What is the condition of the black plastic tube between the air filter and
> the throttle body? Is it free of cracks or
> holes or leaks where it connects to the air filter housing or throttle body
> housing?
>
> A competent technician or your Toyota dealer can also check O2 sensor
> operation since it controls the air/fuel mixture.
>
> --
>
> Ray O
> (correct punctuation to reply)
>[color=green]
> > Ray O wrote:[color=darkred]
> >> <hannaari@optonline.net> wrote in message
> >> news:1154805828.910978.13350@i42g2000cwa.googlegroups.com...
> >> > Please help,
> >> >
> >> > My 92 Camry V6 3.0 has failed emission test twice for the same resaon,
> >> > which is low HOx/252 ( standard should be around 937) and high HC/180 (
> >> > standard should be around 124) and high CO%/3.52 ( standard should be
> >> > around 0.69). Prior to emission test I have repaird the following
> >> > I have new Timing belt, spark plus, wires, 2 main belts, radiator,
> >> > radiator cap, water pump, thermostat, power steering pump, power
> >> > streering high pressure hose, lower engine mounts, sway bar bushing,and
> >> > PVC valve
> >> >
> >>
> >> Where are you located?
> >>
> >> I have never heard of HOx. Assuming you mean oxides of nitrogen (NOx),
> >> your
> >> vehicle did not fail because of low NOx because lower is better.
> >>
> >> The high HC and CO could be caused by an ignition system misfire, which
> >> could be related to the spark plugs and spark plug wires you recently
> >> replaced. Did you use OEM spark plugs and wires? If not, I would start
> >> by
> >> using OEM plugs and wires.
> >> --
> >>
> >> Ray O
> >> (correct punctuation to reply)[/color]
> >[/color][/color]

<hannaari@optonline.net> wrote in message
news:1154901911.977860.147160@n13g2000cwa.googlegroups.com...[color=blue]
> Dear Ray,
>
> The engine runns OK at idle, when the engine warm up the RPM at idle
> goes down, I replaced the distributor about a year ago, it was part of
> the tune up the dealer recommended. also I have 167k miles on my car,
> the air filter is OEM new replaced about 2 weeks ago. the plastic tube
> has been replaced about a year ago also, from the junk yard from 1993
> Toyota car, and it has no cracks at all.
>
> Thanks in advance.[/color]

Hmmm, I've never heard of a distributor being replaced as part of a tune up,
although distributor caps are replaced.

I think the dealer will have to check the O2 sensor function and if that
checks out, check ignition system function.
--

Ray O
(correct punctuation to reply)
[color=blue]
> Ray O wrote:[color=green]
>> <hannaari@optonline.net> wrote in message
>> news:1154892699.623845.5330@n13g2000cwa.googlegroups.com...[color=darkred]
>> > Dear Ray,
>> >
>> > Yes I did not fail because of low NOx, I failed becuase of high HC and
>> > CO, I am located in New Jersey. and my plugs and wires are original
>> > from Toyota dealer, also forgot to mention I replaced the Distributor.[/color]
>>
>> Hydrocarbons (HC) are unburnt fuel, and so high HC means high amounts of
>> unburnt fuel, either because the fuel is not burning completely or the
>> mixture is too righ - that is, the fuel ratio is too high for the amount
>> of
>> air
>>
>> High Carbon Monoxide (CO) comes from a fuel mixture that is too rich.
>>
>> The combination of high HC and CO could be caused by a misfire - one or
>> more
>> spark plugs are are not firing; incorrect ignition timing, or a righ fuel
>> mixture.
>>
>> How does the engine run at idle? Does it run smoothly? Does it idle
>> normally or fast after it is warmed up?
>>
>> Why did you replace the distributor? How long ago was it replaced?
>>
>> What is the condition of the air filter? If you shine a light through
>> it,
>> can you see light?
>>
>> What is the condition of the black plastic tube between the air filter
>> and
>> the throttle body? Is it free of cracks or
>> holes or leaks where it connects to the air filter housing or throttle
>> body
>> housing?
>>
>> A competent technician or your Toyota dealer can also check O2 sensor
>> operation since it controls the air/fuel mixture.
>>
>> --
>>
>> Ray O
>> (correct punctuation to reply)
>>[color=darkred]
>> > Ray O wrote:
>> >> <hannaari@optonline.net> wrote in message
>> >> news:1154805828.910978.13350@i42g2000cwa.googlegroups.com...
>> >> > Please help,
>> >> >
>> >> > My 92 Camry V6 3.0 has failed emission test twice for the same
>> >> > resaon,
>> >> > which is low HOx/252 ( standard should be around 937) and high
>> >> > HC/180 (
>> >> > standard should be around 124) and high CO%/3.52 ( standard should
>> >> > be
>> >> > around 0.69). Prior to emission test I have repaird the following
>> >> > I have new Timing belt, spark plus, wires, 2 main belts, radiator,
>> >> > radiator cap, water pump, thermostat, power steering pump, power
>> >> > streering high pressure hose, lower engine mounts, sway bar
>> >> > bushing,and
>> >> > PVC valve
>> >> >
>> >>
>> >> Where are you located?
>> >>
>> >> I have never heard of HOx. Assuming you mean oxides of nitrogen
>> >> (NOx),
>> >> your
>> >> vehicle did not fail because of low NOx because lower is better.
>> >>
>> >> The high HC and CO could be caused by an ignition system misfire,
>> >> which
>> >> could be related to the spark plugs and spark plug wires you recently
>> >> replaced. Did you use OEM spark plugs and wires? If not, I would
>> >> start
>> >> by
>> >> using OEM plugs and wires.
>> >> --
>> >>
>> >> Ray O
>> >> (correct punctuation to reply)
>> >[/color][/color]
>[/color]

On Sun, 6 Aug 2006 17:09:36 -0500, "Ray O"
<rokigawaATtristarassociatesDOTcom> wrote:
[color=blue]
>
><hannaari@optonline.net> wrote in message
>news:1154901911.977860.147160@n13g2000cwa.googlegroups.com...[color=green]
>> Dear Ray,
>>
>> The engine runns OK at idle, when the engine warm up the RPM at idle
>> goes down, I replaced the distributor about a year ago, it was part of
>> the tune up the dealer recommended. also I have 167k miles on my car,
>> the air filter is OEM new replaced about 2 weeks ago. the plastic tube
>> has been replaced about a year ago also, from the junk yard from 1993
>> Toyota car, and it has no cracks at all.
>>
>> Thanks in advance.[/color]
>
>Hmmm, I've never heard of a distributor being replaced as part of a tune up,
>although distributor caps are replaced.
>
>I think the dealer will have to check the O2 sensor function and if that
>checks out, check ignition system function.[/color]

If, as the OP noted, the entire distributor and not just the cap, was
replaced then I wonder if the timing is correct.
FWIW
YMMV