I just bought my 1.9L '85, and gave it a full tune up with a new O2 sensor
and all and had it pass CA smog and everything.  And it too runs really rich
on start-up.

-eric
------
Eric Spletzer
San Francisco, CA
'85 Vanagon GL Westy

On 5/5/02 12:22 PM, "jhlauterbach" <jhlauterbach@MSN.COM> wrote:

> Marshall, my 1.9 is fully tuned up, runs better than it ever has, but it
> runs rich on start up, particularly if van has been in hot sun all day and
> outside air temp is above 75 deg. F
>
> John Lauterbach
> Macon, GA
> '84 7-passenger with 1.9L engine
>
> ----- Original Message -----
> From: "Marshall" <mjruskin@SHAW.CA>
> To: <vanagon@GERRY.VANAGON.COM>
> Sent: Sunday, May 05, 2002 3:02 PM
> Subject: Remedy requested for Suspected "rich-running" 1.9
>
>
>> Hi Volks:
>>
>> My neighbour was beside my van when I started it - and he commented on how
> incredibly rich the exhaust smelled.
>>
>> The drivability, FWIW, is excellent. Starts great and runs great. When
> it's warm out, I just turn the key and it starts. When it's cold out,
> requires partial throttle to start.
>>
>> On the digitool, it does seem that the O2 sensor is working well - at
> least, when the van is warmed up.
>>
>> I have a new rotor, cap, fuel filter and spark-plug wires.
>>
>> Questions:
>>
>> 1.    Is the 1.9 always supposed to run very rich at start-up? ( I think
> it is, because the O2 isn't warmed up - so I can't see how the "richness of
> mixture" could be controlled at start-up)
>>
>> 2.    If I replace my tempII sensor, will this reduce richness, and
> improve mpg? (currently quite poor)
>>
>> 3.    Can a vaccuum leak cause richness and poor fuel economy? (remember I
> do have excellent drivability)
>>
>> Thanks,
>>
>> Marshall Ruskin
>> 84 Westy
>>
>>
>>
>>
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