Re: Re: RE: Engine knock question (97, 318)

From: Shane Moseley (smoseley@ix.netcom.com)
Date: Tue Jul 10 2001 - 21:23:33 EDT


It is the K&N. Been there - done that. Read my last post to the guy w/the
pinging Dak. Sorry I missed your last post.

As far as running lean - I very seriously doubt that is the case. Just because
you are (potentially) introducing more air into the motor - this doesn't mean
you are running even the slightest bit leaner. Its a control loop - when the O2
sensor senses more air in the exhaust - The PCM lengthens the injector
pulsewidths (introduces more fuel) to compensate - to reach the magic 14.7 to 1
(Air to Fuel) ratio.

Try putting the stock breather back on and try running it early in the am or
late at night when the air is not so hot. I bet the pinging is at least
reduced. I'm not saying it will go away completely. There are a plethora of
things on our trucks that can make them ping - unfortunately. Thats the price
we pay for the performance they produce - at least according to Ma-Mopar's
formula.

Latr,

Shane

jay & dana wrote:

> Hi Ron, Thanks
>
> So far the K&N is the only mod I have done to date. Intake was stock. And
> I did reset the PCM according to Bernd's instructions that he seems to post
> so often because of new comers questions (Thanks Bernd). So if everything
> is leaned out does this mean that a better, freer flowing exhaust might
> help?
>
> Thanks again
> Jay
>
> -----Original Message-----
> From: Ronald Wong <ron-wong@home.com>
> To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
> Date: Monday, July 09, 2001 8:42 PM
> Subject: DML: RE: Engine knock question (97, 318)
>
> >Sometimes it isn't so easy. Is the FIPK the only mod? Was your intake
> >stock prior to this? If so, you're introducing a lot more air than before.
> >I wonder if you've leaned out everything. Did you reset your PCM?
> >
> >Ron
> >00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
> >For modifications see my DML Profile (URL follows)
> >http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY
> >
> >
> >-----Original Message-----
> >From: owner-dakota-truck@buffnet.net
> >[mailto:owner-dakota-truck@buffnet.net]On Behalf Of jay & dana
> >Sent: Monday, July 09, 2001 5:26 PM
> >To: DML
> >Subject: DML: Engine knock question (97, 318)
> >
> >
> >I just installed my K&N FIPK #57-1509 in my truck, easy install, but now I
> >notice at WOT I hear a slight engine knock. It never did this before, as I
> >drove my truck at WOT many times just before this minor mod. Before
> >installing the K&N I opened the TB blades and checked for oil, was none
> >except for a minor oil "sweat" for lack of a better word. If anybody have
> >any ideas or opinions they would be greatly appreciated.
> >I know that colder plugs help with engine pinging but this is not a ping,
> >it's a definite engine knock.
> >
> >TIA
> >Jay

--
'96 IndyRam-HisIndy-MPI TB Pulleys RTcam MPComp HVoilpump DynaGearDoubleRoller
WindageTray CompTAs
'96 IndyRam-HerIndy-numbered(#142)"Track Truck"
'74 Triple-Black Dodge Challenger Rallye 360 EFI R&D vehicle
'93 Dakota CC 318 - soon to be mine 8)



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