Re: [DML] losing power (vacuum leak)

["content22207" <brobertson@xxxxxxxxxxxx>]

Could be. Lean mixtures burn much hotter than rich ones. Check out the
pic of my vacuum leak damaged spark plugs in #5939's photo album
(cracked line to the HVAC mode switch did that). Vacuum leaks can
cause combustion chamber temps to soar astronomically -- same effect
as dialing up the oxygen on a welding torch.

Over advanced ignition time will also elevate combustion chamber temps
(longer burn time).

Even properly functioning contemporary engines suffer from both lean
mixtures and aggressive timing. That's why they burn so much hotter
than earlier models, as Castrol points out in its TV commercials. IMHO
stock B28F falls into the same category.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "Larry Donn" <lumpyd2003@xxxx> wrote:
> 
> 
> I was told the car was running very lean. The exhaust was white hot. 
> Would that more likely be a vacuume leak?
> 









To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/dmcnews/

<*> To unsubscribe from this group, send an email to:
    dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/