It does sound like the lifters not being fully pumped up. I would recommend
running a thicker oil - like 20w50. I had the same problem and the 20w50
eliminated it. Also, I wouldn't worry about running the 20w50 (you'll get alot
of opinions on this) as my truck has been running it for over 130K miles w/no
problems and my wife's truck has been running it for 86K miles w/no problems.
Another huge benefit is that at initial startup since the hard parts still have
much more oil on them w/the thicker oil - the startup friction (which results in
about 80-90 percent of engine wear) is significantly reduced. It will not bleed
out of the lifters like the 10w oil will.
Latr,
Shane
Chris Reck wrote:
> I've had the same problems for the past two years in the winter. Dealer
> said there isn't a problem. Once the truck runs for 15 minutes on the
> highway, it goes away. On mine, it almost sounds like someone playing a lot
> of spoons under my hood.
>
> I was told that the lifters are not getting enough oil in the beginning of
> the warm-up, thus resulting in the noise. I am always afraid that this is
> the start of something more serious, but as I give it gas and get out of
> first (auto), the pinging goes away. It doesn't come back again until I
> start slowing down past 15 mph; but not after it warms up. I've had this
> before and after changing the stock air filter to a custom K&N cone filter.
>
> Anyone else have ideas?
>
> Chris
> 99 CC Sport 4x4 Amethyst (with Autolites).
>
> ----- Original Message -----
> From: Wes Weems <wweems@fix.net>
> To: <dakota-truck@buffnet.net>
> Sent: Tuesday, March 05, 2002 10:05 PM
> Subject: DML: Odd running conditions
>
> > Ok I got a 3.9l v6 dakota (1997)
> >
> > Recently I replaced my sparkplugs (3923's), with champion platinum plugs
> > (thats all kragen had) with the bone stock gap, whatever they were gapped
> > at...
> >
> > Heres what I've noticed... truck appears to run 10x better between 1k-2500
> > rpms...
> > Truck runs really well when warm though pings....
> >
> > truck runs HORRIBLE when cold... pinging like a mofo....
> >
> >
> > Recently I did the timing chain TSB (tensioner etc) and stuff... but I
> gotta
> > know why my truck would run way worse when its cold than when its warm...
> > perhaps a sensor on the outs?
> >
> >
> > ANY insight would be great/
> >
> > Wes
> >
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:04:07 EDT