Re: [DML] exhaust and idle

["Tom Niemczewski" <tomciodmc@xxxxxxxxxxxxxx>]

How do you know that it was right on the money? Did you have it tested with 
a gas analyzer? An emissions inspection is not going to tell you if it's set 
right because you are checking the gasses passed the catalytic converter and 
its job is to make sure the gasses are clean. That's why when you set the 
mixture you have to connect the analyzer upstream of the converter.
I did set the mixture by feel once only because I did not have access to an 
analyzer or dwell meter and went for an emissions inspection. It passed with 
flying colors. Only two days later when did finally have the tools it turned 
out that the adjustment was way out of the limit of the lambda circuit. Even 
though it was way off the car still passed without any problems.....
The thing is that you simply CANNOT adjust the mixture by feel and get it 
right. It will be good enough to make the car drivable, it might pass 
emissions but it will not be right. You need the tools to do it right.
Like John have said, this is a good way to get the car to run again, but in 
the end it needs to be done with an analyzer.
Do it right and see how much power a stock DeLorean has. I have had many D 
owners ask me what I have done to my car because it's so quick...... and 
they are always very surprised when I tell them that it's 100% stock.

Tom Niemczewski
vin 6149 (in Poland!)
Google earth: 52°25'17.30"N 21° 1'58.00"E
tomciodmc@xxxxxxxxxxxxxx
www.deloreana.com



----- Original Message ----- 
>I adjusted my mixture by feel and it was right on the money. After my
> first emissions inspection following that procedure, the readings
> confirmed my adjustments.
>
> --- In dmcnews@xxxxxxxxxxxxxxx, "John Hervey" <john@...> wrote:
>>
>> Tom, Yes I do recommend an analyzer be done for the final fix. But,
> After
>> adjusting about 50 cars I find that I'm almost on the money. But,
> Yes the
>> analyzer be done. Believe it or not, some people can't get to a shop
> with
>> the equipment and this way will get them on the road.
>> John Hervey
>>
>> -----Original Message-----
>> From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On
> Behalf Of
>> Tom Niemczewski
>> Sent: Saturday, July 15, 2006 10:05 AM
>> To: dmcnews@xxxxxxxxxxxxxxx
>> Subject: Re: [DML] exhaust and idle
>>
>> Hello
>>
>> John, do you really adjust the mixture by feel alone?? If the answer is
>> 'yes' then I say that no wonder so many DeLoreans start and run
> poorly and
>> have no power. You cannot do that by feel! You are right saying that a
>> little bit goes a long way.. and if you would do it like it should
> be done
>> by using a gas analyzer you'd know that 1/8 of an inch might take
> you from
>> one limit to the other limit of the lambda circuit...






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