timing belt snapped on Punto
ian.wild
whilst driving! But it still won't start - it tries turning over erratically
and then flattens the battery. What can also be damaged when a timing belt
snaps and what do I need to do now?
Help!!
ric
ian.wild <ian....@breathemail.net> wrote in message
news:38ddd...@news1.vip.uk.com...
Bent valve stems most likely - caused by the pistons ramming them repeatedly
after the failed to close following the camshaft(s) sudden stop because the
belt was no longer there to drive it/them.
Only way you will know for sure is if you get the cylinder head off, but it
sounds pretty likely to me (unless you haven't adjusted the timing properly
following the belt change...)
Ric.
Horseman
ric <enr...@vanni.freeserve.co.uk> wrote in message
news:8bkmcp$khi$1...@news5.svr.pol.co.uk...
You don't need to remove the head to diagnose this - just do a compression test.
--
Horseman.
=============================
j.hor...@virginnet.co.uk
=============================
mike
valves will not contact the pistons.
Sounds like you've not put the timing belt back with the correct alignment
of crank and camshafts.
mike
Horseman <j.hor...@virginnet.co.uk> wrote in message
news:HblD4.3291$OC2....@news2-win.server.ntlworld.com...
Guy King
from "mike" <mwpe...@btinterNOSPAMnet.com> contains these words:
> The Punto has a fail-safe engine in case of the timing belt snapping - the
> valves will not contact the pistons.
Diesel?
--
Skipweasel........one who relieves strangers of what they didn't want.
Horseman
Guy King <guy....@zetnet.co.uk> wrote in message
news:200003271...@zetnet.co.uk...
ric
Horseman <j.hor...@virginnet.co.uk> wrote in message
news:HblD4.3291$OC2....@news2-win.server.ntlworld.com...
>
test.
>
A compression test would not reveal conclusively if bent valves were the
problem, but I suppose it would tell you if you are going to HAVE to
subsequently take the head off.
Ric.
Horseman
Well it would be conclusive enough for most people. What else would a zero
compression indicate after a cam belt failure apart from valve damage?
(Assuming that the car ran okay before the belt went)
Roger
<snip huge DIY-on-a-shoestring tale>
> Have fun Ian, tinkering around is greatly satisfying when you
> have done your best and you switch on and it starts first time.
> "Oh what a feeling!"
I'm impressed. I get this feeling when I change the spark plugs and the
engine starts first time ;-)
--
Roger
Web: http://freespace.virgin.net/roger.cantwell
ICQ: 40038278
*** Please watch the spam trap ***
John Crighton
<ian....@breathemail.net> wrote:
>I have just replaced the timing belt on my Fiat Punto after it snapped
>whilst driving! But it still won't start - it tries turning over erratically
>and then flattens the battery. What can also be damaged when a timing belt
>snaps and what do I need to do now?
>
>Help!!
>
>
Hello Ian,
Several weeks ago, I was thinking about changing the
timing belt on my old 1982, 545cc 3cyl. Suzuki Hatch.
Murphy must have heard me and the belt broke.
I took the head off and saw that the tops of each piston
had two marks on them where the valves had touched.
Being unemployed and hard up, I bought second hand
valves from the breakers yard. A small tin of valve grinding
paste and a stick with a rubber sucker on the end for
lapping the valve contact surface.
I was going to use the old head gasket again but thought
that was being just a bit too tight fisted in a critical area,
so I fitted a new non-genuine head gasket that was less
than half the price of a genuine Suzuki head gasket.
The other gaskets were cut out by hand from sheet
material to save money.
I re-used the exhaust manifold gasket with some sealer to
save money.
The new non-genuine timing belt was one third the price
of the genuine Suzuki belt.
When one is strapped for cash, one has to do one's best, Heh, Heh.
The engine runs again, no better or worse than it did before.
So, I have learnt my lesson about timing belts, Ha Ha,
If in doubt about how old it is, change it before it breaks.
Have fun Ian, tinkering around is greatly satisfying when you
have done your best and you switch on and it starts first time.
"Oh what a feeling!"
Regards,
John Crighton
tom stockdale
rover 216 survived a timing belt failure
mike <mwpe...@btinterNOSPAMnet.com> wrote in message
news:8blp62$cej$1...@neptunium.btinternet.com...
> The Punto has a fail-safe engine in case of the timing belt snapping - the
> valves will not contact the pistons.
> of crank and camshafts.
>
> mike
> news:HblD4.3291$OC2....@news2-win.server.ntlworld.com...
> >
> > >
> > > ian.wild <ian....@breathemail.net> wrote in message
> > > news:38ddd...@news1.vip.uk.com...
snapped
> > > > whilst driving! But it still won't start - it tries turning over
> > > erratically
> > > > and then flattens the battery. What can also be damaged when a
timing
> belt
> > > > snaps and what do I need to do now?
> > >
> repeatedly
> > > after the failed to close following the camshaft(s) sudden stop
because
> the
> > > belt was no longer there to drive it/them.
> > >
> > > Only way you will know for sure is if you get the cylinder head off,
but
> it
> > > sounds pretty likely to me (unless you haven't adjusted the timing
> properly
> > > following the belt change...)
> > >
> > > Ric.
> > >
> >
compression
> test.
> >
> >
Garry Pearce
"ian.wild" wrote:
> I have just replaced the timing belt on my Fiat Punto after it snapped
> whilst driving! But it still won't start - it tries turning over erratically
> and then flattens the battery. What can also be damaged when a timing belt
> snaps and what do I need to do now?
>
> Help!!
Glyn Wilder
on the crank and cam before you put the belt back on?
"Garry Pearce" <ga...@gpearce.screaming.net> wrote in message
news:38EA6939...@gpearce.screaming.net...