100K - Definitely change the timing chain. Plenum is more than likely
leaking as well (PCV test isn't always accurate - check the manifold base
visually by looking down the TB bores).
On the startup issue - could be the fuel pump...seen this too many times on
older vehicles.
- Bernd
-----Original Message-----
From: owner-dakota-truck@bent.twistedbits.net
[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of David Henry
Sent: Wednesday, July 28, 2004 7:38 PM
To: dakota-truck@dakota-truck.net
Subject: DML: 318 Lacks Power (got long)
94 Dakota, 318, 5spd, almost 100k miles.
Gutless V8. Engine severly lacks power. On a cold start it never fires up
the first time. I usually crank for about 5 seconds, rest a couple seconds
and repeat. It usually fires on the 2nd or 3rd try. Warm starts don't seem
to be an issue.
Items recently replaced, as general maint, and easy cheap things to do; Cap,
rotor, coil wire, spark plugs (Autolite 3923), PCV Valve, PCV Breather. The
coil wire was kinda cooked and cracked, so I replaced it with an Accel wire
I had lying around. The spark wires are Magnecor wires that are a few years
old.
O2 sensor was replaced in the last year. Bosh part IIRC.
My mechanic didnt think there was any slop in the timing chain, so it's
still original. I do have a double roller chain and tensioner sitting in
the garage.
Found the following in the archives, and didn't get the card to stick, but
I'm not sure if I let it run long enough or messed something else up. Is
there anyother way to check the intake plenum gasket?
Do a visual or vacuum test on the intake manifold. Haven't done it for a
couple years but it involves pulling the hose leading from the PCV valve at
the intake manifold, plug the hose, and re-attach to the intake manifold. I
put saran wrap over the intake manifold hose connector and push the hose
back on. Remove the breather filter on the other side. Cover the breather
hole something with something like a soft plastic card (palm of hand could
be used with care). Have someone start the engine. In about a minute you
should see card being held to hole by itself or feel suction on your palm.
This means that belly pan gasket is okay. If there is no or little vacuum,
then the gasket is probably blown.
If I can find a way to confirm my manifold is toast, then it looks like it's
time for the MP1 and a new thread :)
Also, does anyone know what section of the FSM has diagnostic stuff for
this?
David 94 CC Sport 4x4, 318, 5spd, Lifted with 33" BFG MT's
This archive was generated by hypermail 2b29 : Sun Aug 01 2004 - 00:46:15 EDT