Re: Re: Re: 4.7L HO Again!

From: Gmblows@aol.com
Date: Tue Sep 10 2002 - 23:31:41 EDT


Did you check for vacuum leaks around the intake manifold?

> I'll look into that.
>
> In the never ending quest to solve the problems with my truck, I went to
the
> dealer today to take a look at it through the eyes of a DRB-III.
>
> Everything seems to be ok, except #8 misfired 15 times in about 2-4 seconds
> (At WOT).
>
> What could be causing this? Bad ignition coil? The whole thing still pings
> pretty bad at medium/heavy acceleration. Could this all be related?
>
> Thanks
> william
> ----- Original Message -----
> From: "BKBridges" <bbridges@flometrics.com>
> To: <dakota-truck@dakota-truck.net>
> Sent: Monday, September 09, 2002 4:14 PM
> Subject: DML: Re: 4.7L HO Again!
>
>
> >
> > William,
> > The new valve springs will reduce float due to the higher lift at full
> rpm.
> > Id do it in the long run, but its not manditory to get it running
> right....
> > A scanner shure would help to figure out whats going on!
> > Bruce
> > ----- Original Message -----
> > From: "Willliam H. Hiatt III" <william@hiatt.net>
> > To: <dakota-truck-moderator@bent.twistedbits.net>
> > Sent: Monday, September 09, 2002 12:01 PM
> > Subject: DML: 4.7L HO Again!
> >
> >
> > >
> > > In my never ending quest to solve Ed's (as well as my) pinging problem,
> I
> > > stumbled across this:
> > >
> > > The 4.7 flows 22.5 lb/hr @ 49psi, while the 4.7 HO flows 25.8 lb/hr @
> > 49psi.
> > > Is this difference in the injectors, or is it all in the PCM? I'm
> thinking
> > > my pinging is because the truck is leaning out when you snap the
> throttle
> > or
> > > on acceleration.
> > >
> > > Also, the 4.7 valve springs are as follows:
> > >
> > > 6.69 coils
> > > 3.28 wire diameter
> > >
> > > While the 4.7 HO valve springs are as follows:
> > > 7.30 coils
> > > 4.77 wire diameter
> > >
> > > Is this something to warrant changing as well (I know it won't affect
> > > pinging/etc, but just for longevity sakes)
> > >
> > > And last but not least, the 4.7 HO spark plugs. They have a platinum
> rivet
> > > located on the tip of the center electrode. Why would Dodge run these
> > > platinum plugs in the HO?
> > >
> > > Thanks
> > > william
> > >
> > >
> > >
> >
> >
>



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