Does the Magnum engines use 2 PCV valve?
How about changing the fuel filter?
-----Original Message-----
From: Andy Levy [mailto:andylevy@yahoo.com]
Sent: Friday, November 02, 2001 1:59 PM
To: dakota-truck-moderator@bent.twistedbits.net
Subject: Re: DML: Is my engine dying? (longish)
WOW. The list never ceases to amaze me. Thanks to everyone who's posted so
far. I was afraid my post last night was so long people would pass it by.
I
think my shopping list for tonight is:
cap
rotor
plugs
wires (have to mail-order)
PCV valve
Any other real cheap, easy stuff I can replace while I'm in there? What
about
the EGR valve (while we're throwing around 3-letter valve names)? May as
well
do all these "little" things while I'm at it. Now I get to use my shiny new
FSM! More below:
Bob Tom wrote:
> The injectors do make a clicking sound when they open and close.
> Under certain circumstances, the injectors will stop opening and
> closing when decelerating.
>
> OE exhaust manifolds do not usually leak but will make a ticking
> sound upon startup when engine is cold. If the leak isn't too large,
> the ticking sound will disappear when the exhaust gases get hot
> and the metal expands.
I get it both hot and cold.
>
> >My gas mileage has also been poorer than I think it should be. I'm
> >getting 13 MPG *at best* in town, and am hard-pressed to get over 16.5
> >at 70-75 MPH. I used to be able to pull 17-18 at those highways speeds.
>
> When put together with the ticking sound (if it's pinging), these symptoms
> sure point to a leaking belly pan gasket. Are you experiencing a
> more-than-normal oil level drop as well?
>
> What is your mileage? The O2 sensor(s) and its circuitry conditions
> could also explain your mileage loss. The sensor gets lazy over
> time. Dirt etc. contamination is also a common cause of failure
> of the sensor (thinking of the wild things that everyone does with
> their trucks at Jon's BBQ).
My first thought was the gasket as well, but I didn't see much in the
manifold
2 weeks ago when I had the TB off.
I'm at 41K right now. I suppose those O2 sensors might have gotten dirty at
Jon's, there was a small amount of crud flying around :). O2 sensors are a
little over my "well, let's try it" price but if the other stuff doesn't
work
out, I'll go for it.
> >At Daktoberfest, Jim Knox thought he heard a misfire when I had it in
> >Neutral and got the revs up.
>
> Misfire will cause the O2 sensors to send false readings to the PCM
> resulting in increase gas usage as well as dumping raw gas into the
> exhaust. Have you smelled any gasoline fumes around the truck?
Maybe, but I haven't been checking close. I'll try to be more observant.
> >Would it be worth pulling and cleaning the fuel injectors? What's the
> >procedure for this, and do I need a special socket?
>
> Do you have the url for Jon's MPI installation? The section for removing
> the injectors (no special tool required) may be there. If not, let me
> know, and I'll copy it from the printed installation guide. The only
> messy part if purging the gasoline from the line and the rails.
I can find it on the site; if I can't locate it, I'll drop you a private
line.
>
> >I really, really, really do not want to bend over and pay the dealer to
> >look at this. I'm well out of warranty at this point. I want to do as
> >much as I can myself before resorting to a dealer visit. Is it possible
> >that my belly pan gasket is only very slightly leaking, not enough for
> >oil to come in? Valve lifters? andy
>
> Do the ignition maintenance first? Maybe try to localize the
> ticking location. See what improvements occur and let us know.
>
> Good luck.
>
> Bob
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