I was recently driving our 1996 Dodge Caravan with a 3.0L engine and
when I was turning a corner the van died and stopped running. Earlier
that day my wife had told me she smelled something funny but I didn’t
have time that morning to check it. Once I diagnosed that is was a
bad timing belt I found out that the smell was the timing belt
rubbing/burning through the belt covers.
So after I replaced the timing belt and got everything back together,
I started the van only to hear a repetitive "tick-tick" sound from
the engine, lifters, valve train, or something of that nature,
accompanied by white smoke at the exhaust. But wait, thats not all.
There is also, what sounds like a growling sound, almost like
something is loose somewhere (it’s really undescribable). And once
the engine warms up, I can hear and feel a "tick-tick" at the duty
cycle purge control valve of the EVAP system. The duty cycle purge
control valve is turned on by the PCM only when the vehicle has warmed
up. It has something to do with controlling/recycling the fuel vapors
through the system.
When I replaced the timing belt, it was shredded, so I had to match my
timing marks up manually. I know that for every one revolution of the
camshaft sprockets, there are two corresponding revolutions of the
What if a person were to have the crankshaft sprocket 360 degrees off,
to where the camshaft was at 180 degrees when it should be at 360
degrees? Or what if one camshaft sprocket is off, etc?
1) Would the van even start if this is the case?
2) Is my engine not burning the fuel correctly, if so, could this
explain the duty cycle purge control valve making the ticking sound?
3) Have I bent a valve, is my timing off, etc?
I’m about to pull it back apart, so any help would be much
Posted using the http://www.autoforumz.com interface, at author's request
Articles individually checked for conformance to usenet standards
Click to see the full signature.