Good info, but Bob Tom said this over a year ago.
Richard in San Antonio
On Tue, 5 Jun 2001 22:43:38 -0500 "mrdancer"
<mrdancer2@home.your.underwear.com> writes:
>
>
> --
> --
> "Suter, Rick" <RSuter@bizfon.com> wrote in message
> news:E22DA6225145D51180E70090273FA83F01AC1F@PLATO...
> >
> > What is the diagnosis for the belly pan/PING issue on 5.2l
> engines? (I
> know
> > I'll have to TELL the dealer how to do it!)
>
> SOURCE: MoPar Performance News, Tech Tips, by Larry Shepard - Mopar
> Chief
> Engineer
>
> The problem is related to the gasket that seals the cover to the
> bottom of
> the manifold on the Magnum engines. If this gasket does not seal
> properly,
> the engine can suck in oil vapors from the lifter valley and cause
> the
> engine to detonate due to the aggressive spark advance curve used in
> the
> Magnum computers. Remembering where this gasket is located, this is
> not the
> first thing that you want to do. It could be expensive and time
> consuming
> to pull off the intake to check. However, we have a helpful tip. To
> determine if there is a proper seal, remove the PCV (Positive
> Crankcase
> Ventilation) valve from the right hand valve cover, but leave the
> PCV valve
> attached to the hose from the intake manifold. Remove the breather
> hose
> from the left-hand valve cover that goes to the air cleaner.
> Plug-off the
> connection at the valve cover. With the engine idling, place your
> thumb
> over the opening where the PCV valve was located. After 10-15
> seconds you
> should feel pressure, which indicates that the gasket is sealing. If
> you
> feel a vacuum, the gasket is leaking and needs to be repaired. The
> best
> repair is to remove the intake manifold, remove the bottom plate and
> discard
> the failed or leaking gasket. Clean all the surfaces thoroughly, and
> apply
> a bead of Mopar RTV sealant, PN 82300235 to the bottom of the
> manifold.
> Re-install the plate, let dry and then re-install the manifold.
> Refer to
> the service manual for manifold installation tips and details.
>
>
>
>
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