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Old 01 Jun 2009, 08:50 pm
jim beam
 
Posts: n/a
Default Re: '93 civic failed emission or suspicious emision test ?

Steve wrote:
> robb wrote:
>
>>
>> maybe the emmision machine was reading 2700 when he had it reved
>> up to 5K ? i do not know but someone probably knows there are
>> alot of experienced and smart people here.

>
> Well, it was stated that the tester was having a hard time positioning
> the machine's tach pickup...


that's the worst thing about the op's description of the test - the tach
reading, unless it's a obdII vehicle, is taken by putting a sensor on
one of the plug leads, under the hood, not a "paddle" on the dash. and
revving the engine is perfectly kosher if the cat is cold or there is a
misfire.

bottom line, the test was good. the op's description was unreliable.
and his paranoia unjustified. the emissions result was perfectly
consistent with the failure that followed.



> and 2700 is suspiciously close to 1/2 of
> 5000 (maybe the car's tach was actually reading 5400). IF the tach
> pickup was only getting every other spark (like from only one coil of a
> 2-coil pack on a 4-cylinder) then it could easily read 1/2 the correct
> value.
>
> Get it tested again somewhere else- that'll give you a final answer.
>

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