[Gmecm] 7747 High BLM at idle

[Charles McDowell]

Man, I've checked over and over for leaks.  I think I'm okay there.  I don't
have a number for vacuum off the top of my head, and I didn't log all the
data last time.  I can see the last 13 raw data samples from the MAP and I'm
around 45.  I'm not sure how to coonvert that to inches or kpa or
whatever... based on my last converted values (235 = 97 kpa) it would come
out to about 19 kpa, but that seems really low.  The offending VE cell is
800rpm/30kpa.

-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf
Of DV Fagan
Sent: Friday, August 19, 2005 6:17 PM
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] 7747 High BLM at idle

Charles,
What is the manifold vacuum at idle?  You might check your vacuum lines.

--- Charles McDowell <charles at taildragger.info> wrote:

> My truck has been running okay, but I finally decided to get around to 
> gathering some more data to fine tune things.  I hooked up winALDL and 
> drove around for a while.  As I drive around, all the BLM table values 
> in winALDL show 124-133 or so - not bad really.  The weird thing is 
> that when I pull in someplace, put it in park and idle it, the idle 
> BLM cell (800/30 in winALDL) just climbs and climbs up to almost 150.  
> That same cell shows something like 133 if I look at it before 
> starting to idle.
> 
> Any ideas what this could be, or where to even start looking?  It's a 
> 7747 for a SBC 350 with automatic, converted from carb.
> 
> TIA
> 
> 
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> 



		
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