Re: [DML] Hot exhaust
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [DML] Hot exhaust

Since the cylinders are leaning out under boost air leaks are less of
an issue. My guess is some kind of quirk causing cylinders 1 & 2
injectors to be metering less fuel than required. I would swap them
around to see if the problem moves or measure them somehow against the
others to be sure they are balanced against the others. Depending on
the system they may be indidually calibrated so you can put more or
less in each cylinder by modifying the fuel map. Pulling the spark
plugs will confirm that the cylinders are running lean. Meausuring EGT
from each cylinder is another way to tell. Before running the motor
again I would do a compression test and leak-down test to make sure
each cylinder is working and there is no damage. I would not suspect
an ignition timing problem since the other cylinders seem to be
running alright. I would recheck that there is no mistake with the
firing order and that the wires are not cross-firing between 1 & 2.
David Teitelbaum
vin 10757

--- In dmcnews@xxxxxxxxxxxxxxx, Martin Gutkowski - DMC Ltd
<martin@...> wrote:
> Nick is running an EFI/Electronic ignition setup that means that air 
> leaks are a moot point unless huge because he is running speed density 
> metering. Ditto distributor mods - he isn't running mechanical timing. 

To address comments privately to the moderating team, please address:

For more info on the list, tech articles, cars for sale see

To search the archives or view files, log in at 
Yahoo! Groups Links

<*> To visit your group on the web, go to:

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    (Yahoo! ID required)

<*> To change settings via email:

<*> To unsubscribe from this group, send an email to:

<*> Your use of Yahoo! Groups is subject to:

Home Back to the Home of PROJECT VIXEN

Copyright 2006  All rights reserved.

Opinions expressed in posts reflect the views of their respective authors.
DMCForum Mailing List Archive  DMCNews Mailing List Archive  DMC-UK Mailing List Archive