Talbot Express Engine Problem
George
> I have a Talbot Express camper van - 2 litre petrol engined - which
> has done 61,000 miles. I've just returned from a 3500 mile journey
> round Europe where I had no problems at all until the last 2 days or
> so when the engine started to misfire after running for about 40 mins
> - usually when driving up an incline or hill or at speed. Since
> returning home I've stripped the fuel and ignition system - replaced
> the fuel pump and filters, cleaned the carb & jets and replaced the
> air filter. Replaced the spark plugs, ignition leads, distributor cap
> & rotor arm. I took it for a run on Saturday for 90 miles and after
> about 70 miles it started misfiring again. I've spoken to 2 local
> Pegeuot dealers who have agreed with what I've down but now suggest a
> cylinder head stripdown as it "must" be valves/springs at fault!
> Before I go this route - do any of you mechanics out there have any
> alternative thoughts of what may be the possible cause of this
> problem? I would appreciate any theories.
>
> Thanks in advance
>
> George
Mark G Phillips
wrote:
Could be the coil breaking down/overheating, causing the misfire. If
you can, try an alternative coil. Should be cheap from a scrap yard.
Don't forget to replace any condensor fitted across the coil as these
are cheap as well.
If there's a ballast resistor in circuit with the coil, it could also
be that. Check the resistor with an ohm meter when cold, take it for a
run and once it starts to misfire, check the resistance again to see
if it's changed.
If it's electronic ignition, then it could be the module, but I don't
know how you'd check it.
Mark.
--
It may not be all the "Stuff" in the Universe that's important,
it may be the spaces in between....
Hilary
you could have got some dirty petrol and youre getting sediment sucked up as
you empty your tank. Might be work flushing the tank??
"Mark G Phillips" <mphi...@delphius.freeserve.co.uk> wrote in message
news:8dr3uusqd3qe362qb...@4ax.com...
Peter Goddard
>
for about 40 mins
>
> > - usually when driving up an incline or hill or at speed.
I had a similar problem with mine. Turned out to be water ingress into a
small two-pin connector in an ignition lead dangling behind the front
grille. Perfectly placed to catch road spray...(It's normally found under
the plastic box covering the rest of the ignition components next to the
radiator.) After cleaning the plug & socket contacts and sealing with goo it
hasn't missed a beat.
David Miller
> > >> round Europe where I had no problems at all until the last 2 days or
> > >> so when the engine started to misfire after running for about 40 mins
> > >> - usually when driving up an incline or hill or at speed.
Just a thought.... it's not a blockage in the fuel cap (or other
vent) causing a vacuum in the tank, is it? When that happens, it
takes a while to build up (your 40 minutes?) and would show most when
greatest flow of fuel is needed (uphill or going fast?). At least
it's cheap to check!!
Peter & Andrea
I had a similar problem for the first 2 years I owned Fiat Ducatto
(same engine etc.)
I did all the things you did , each seemed to cure the problem for a
while.
In the end it turned out to be an incorrect fuel filler cap.
The cap was vented, and it should be unvented.
Therefore when the engine was hot, in the summer, going up long hills
the fuel pump was creating a vacuum in the fuel lines causing the
petrol to vapourise . Therefore the engine was short of petrol.
The tank should be pressurised so as to provide petrol to the pump
suction rather than the pump having to such from the tank.
I changed the fuel filler cap and no problem since.
On the petrol tank there is a pipe hanging down with a plastic "2 way
valve" on the end.
It works as a pressure control valve and vacuum release valve.
If you take it off and try to blow thro it, you should detected a
different pressure required to blow in differtent directions.
This may not be your solution but it is worth a look.
Good luck
Peter
