Halp ANHT cal

[Peter Fenske]

Hi All

David is prob right about leakdown. Put a pressure guage on test port
and see if the pressure is maintained.

In my case I richened up the starting pw another 10% and now it coughs on
the first try and starts on the second .. More fuel yet

:peter

Ps would retarding the timing during start help????

Jason and tom,
It sounds like maybe there is an injector that is leaking... After you shut
it off, it sits and drips until there is no fuel pressure left in the rail,
then when you go to restart it, there is too much fuel sitting in the
manifold.  Cleaning/replacing the injectors may help.


At 11:24 AM 7/11/99 -0400, you wrote:
>thergen at svn.net wrote:
> >
> > If it helps, if my '92 v6 4.3 vortec doesn't start on the first try
> > (typically 60F ~ 90F OAT) with the usual 1 - 2 second crank, I have to
> > floor it (clear flood mode) to get it to start.  This holds true whether
> > it's been setting for hours or it's a warm restart.
> >
> > Compared to my '87 cavlier (2.8, dis, maf), which is similiar to one of
> > the cals you've mentioned (map?), the crank was always longer, but I very
> > rarely had to floor it, even if it didn't catch the first crank.
> >
> > Tom
>
>I've got the same problem with my 4.2L AMC I6, 4.3 7747 TBI swap, if it
>doesn't catch the first time I have to go to clear flood mode to get it
>to start and when it does start it blows black smoke, I have decreased
>the fuel during cranking by 50% and this didnt seem to help, what did
>seem to help a little was to reduce the fuel in the VE tables at 0-400
>rpm and 20-40 map to 0 this helped but it didnt make it perfect. I didnt
>touch the other VE tables, so I dont know if decreasing fuel there would
>help even more... I'll try decreasing fuel in the other VE tables and
>report the results.
>
>Jason
>--
>88 Wrangler - 158K miles and counting
>258 I6, 4.0 head, Cherokee header, 2.5" High-Flow Cat & Flowmaster
>GM TBI (Soon to be MPI hopefully), Crane 260H Cam
>TJ Fender Flares
>http://jweir.home.att.net
>CNC 4X4 Member - http://cnc.4x4.org/

==