failed emission high NOx

My 89 Toyota pickup recently failed emission test for high NOx (1483
std reading 2954).
I checked out the egr system as per the service manual and didn't find
anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
about 20K miles ago and the truck rund fine.
I did however have to wait over an hour in the line and had the engine
shut off. By the time I got to the emissions test, the engine was
pretty cold. Could this have caused this?
Thanks for comments.

On Nov 14, 5:42 pm, RZ > wrote:
> My 89 Toyota pickup recently failed emission test for high NOx (1483
> std reading 2954).
> I checked out the egr system as per the service manual and didn't find
> anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
> about 20K miles ago and the truck rund fine.
> I did however have to wait over an hour in the line and had the engine
> shut off. By the time I got to the emissions test, the engine was
> pretty cold. Could this have caused this?
> Thanks for comments.

No.

1. EGR failure.

2. Ignition timing too far advanced.

3. Lean air/fuel ratio-too little CO and/or too much O2.

4. Defective reduction portion of converter.

5. Compression too high due to combustion chamber deposits.

6. Cylinder imbalance due to intake valve deposits or plugged
injectors.

7. Overheating (general or localized).

8. Excessive oxygen in the exhaust from a leak or AIR problem.

9. Defective heated intake, EFE system or heat riser.

10 Jumped valve timing.

11. Wrong spark plug heat range or overheated plugs from improper
seating.

12 Burning oil.

13 Vacuum leak.

Yes. Catalytic converters don't work when they are cold.

RZ wrote:
>
> My 89 Toyota pickup recently failed emission test for high NOx (1483
> std reading 2954).
> I checked out the egr system as per the service manual and didn't find
> anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
> about 20K miles ago and the truck rund fine.
> I did however have to wait over an hour in the line and had the engine
> shut off. By the time I got to the emissions test, the engine was
> pretty cold. Could this have caused this?
> Thanks for comments.

i have heard of people failing the emissions test with a cold engine,
say 1st thing in the morning, then they went back later in the day and
passed with a hot engine.

I have heard using washer fluid in your breather filter will lower the
NOX. They put washer fluid on there filter just before going into get
it checked, apparently this reduces NOX by a few points.

On Nov 14, 4:42 pm, RZ > wrote:
> My 89 Toyota pickup recently failed emission test for high NOx (1483
> std reading 2954).
> I checked out the egr system as per the service manual and didn't find
> anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
> about 20K miles ago and the truck rund fine.
> I did however have to wait over an hour in the line and had the engine
> shut off. By the time I got to the emissions test, the engine was
> pretty cold. Could this have caused this?
> Thanks for comments.

Did I miss your engine size and trans somewhere in the post?

You've received one correct reply so far. Here's another. Of all the
emissions gasses that would fail due to a cold engine, NOx is not one
of them. You need to fix your plugged EGR passage, shorted EGR temp
sensor, loose or cracked hose(s), too advanced ign timing, failed EGR
VSV, or lean running condition FIRST, then reevaluate for other
problems that need to be diagnosed AFTER all mechanical systems are
working properly.

Toyota MDT in MO

Comboverfish wrote:
>
> On Nov 14, 4:42 pm, RZ > wrote:
> > My 89 Toyota pickup recently failed emission test for high NOx (1483
> > std reading 2954).
> > I checked out the egr system as per the service manual and didn't find
> > anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
> > about 20K miles ago and the truck rund fine.
> > I did however have to wait over an hour in the line and had the engine
> > shut off. By the time I got to the emissions test, the engine was
> > pretty cold. Could this have caused this?
> > Thanks for comments.
>
> Did I miss your engine size and trans somewhere in the post?
>
> You've received one correct reply so far.


That would be the one about spraying washer fluid on your filter, Right?

Speaking of spray-on applications - Did the guy selling the 'new product
to save gas" for 9.99 really say to spray it on the gas pump?

> hi. this is a new porduct, we just spray the lique on the gas pump
> when we pump our gas into the car. The method is so simple. Im very
> happy with the result, so do u think UN9.99 worth to buy ?
>

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On Nov 16, 9:54 am, jim > wrote:
> Comboverfish wrote:
>
> > On Nov 14, 4:42 pm, RZ > wrote:
> > > My 89 Toyota pickup recently failed emission test for high NOx (1483
> > > std reading 2954).
> > > I checked out the egr system as per the service manual and didn't find
> > > anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
> > > about 20K miles ago and the truck rund fine.
> > > I did however have to wait over an hour in the line and had the engine
> > > shut off. By the time I got to the emissions test, the engine was
> > > pretty cold. Could this have caused this?
> > > Thanks for comments.
>
> > Did I miss your engine size and trans somewhere in the post?
>
> > You've received one correct reply so far.
>
> That would be the one about spraying washer fluid on your filter, Right?

Yes, of course! The poster said "They put washer fluid on there
filter just before going into get
it checked, apparently this reduces NOX by a few points." With 3
'points'
out of the way, it should be cake to reduce the next 1468 points
simply using proper diagnostic and repair methods.

Toyota MDT in MO

Comboverfish wrote:
> On Nov 16, 9:54 am, jim > wrote:
>> Comboverfish wrote:
>> > On Nov 14, 4:42 pm, RZ > wrote:
>> > > My 89 Toyota pickup recently failed emission test for high NOx (1483
>> > > std reading 2954).
>> > > I checked out the egr system as per the service manual and didn't find
>> > > anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
>> > > about 20K miles ago and the truck rund fine.
>> > > I did however have to wait over an hour in the line and had the engine
>> > > shut off. By the time I got to the emissions test, the engine was
>> > > pretty cold. Could this have caused this?
>> > > Thanks for comments.
>>
>> > Did I miss your engine size and trans somewhere in the post?
>>
>> > You've received one correct reply so far.
>>
>> That would be the one about spraying washer fluid on your filter, Right?
>
> Yes, of course! The poster said "They put washer fluid on there
> filter just before going into get
> it checked, apparently this reduces NOX by a few points." With 3
> 'points'
> out of the way, it should be cake to reduce the next 1468 points
> simply using proper diagnostic and repair methods.

Oh, you're just being cynical. With a premium washer fluid you should be
able to get seven or eight points.

--
Angry American flags attack Hillary Clinton!

On Nov 16, 6:37 pm, clifto > wrote:
> Comboverfish wrote:
> > On Nov 16, 9:54 am, jim > wrote:
> >> Comboverfish wrote:
> >> > On Nov 14, 4:42 pm, RZ > wrote:
> >> > > My 89 Toyota pickup recently failed emission test for high NOx (1483
> >> > > std reading 2954).
> >> > > I checked out the egr system as per the service manual and didn't find
> >> > > anything wrong.. I changed plugs, cap, rotor, wires, pcv, air filter
> >> > > about 20K miles ago and the truck rund fine.
> >> > > I did however have to wait over an hour in the line and had the engine
> >> > > shut off. By the time I got to the emissions test, the engine was
> >> > > pretty cold. Could this have caused this?
> >> > > Thanks for comments.
>
> >> > Did I miss your engine size and trans somewhere in the post?
>
> >> > You've received one correct reply so far.
>
> >> That would be the one about spraying washer fluid on your filter, Right?
>
> > Yes, of course! The poster said "They put washer fluid on there
> > filter just before going into get
> > it checked, apparently this reduces NOX by a few points." With 3
> > 'points'
> > out of the way, it should be cake to reduce the next 1468 points
> > simply using proper diagnostic and repair methods.
>
> Oh, you're just being cynical. With a premium washer fluid you should be
> able to get seven or eight points.
>
> --
> Angry American flags attack Hillary Clinton!

LMAO!

http://www.prestone.com/products/win...sherFluids.php