Timing problem

I have a 1400 Uno Pacer. This problem has happend twice to me. I drive the car suddenly just dies on me. Try to start it, nothing. A slyte backfire through the card. Losen the distributor and advance the
timing. The car starts and goes again. Reset the timing with a timinglight and everything is fine. Make sure the distributor is secured properly. All goes well for a few days and the whole scenario happens again. What can the problem be that the car self ajusts its timing. The distributor is not lose. Help please. Thanx
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Have had several Uno's, what year, carb implies conventional distributor and ignition coil. Adjusting the timing, and it starts, may be a red herring. Timing would have to be quite a way out to stop it starting, I assume the first thing you did was to mark the postion of everything, so you can see if they have shifted.
Vacuum advance unit ok. No punctured diaphragm? You advance timing car starts, vacuum advance also advances timing.
You may have muck in the carb, blocks a jet, engine stops, wait a while, or have air cleaner off - remove jets - blow through, and all comes good. If it's a lump of muck it is held blocking the jet by suction, engine stops, suction disappears, blockage frees, for a short time.
Engine won't start, if your timing light is a simple series flash tube, wire in series with a plug and see if it flashes. Or get one of the neon tube testers that go in series with a plug.
Fuel pump pumping ok? Coil ok? Hall sensor, electronic unit, driving coil ok?
Quite often you can have a heat related problem which comes good when everything is back to ambient. Some ign. coils fail when hot. Just a few thoughts.
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"" wrote:
> > > I have a 1400 Uno Pacer. This problem has happend twice to > me. I drive > > the car suddenly just dies on me. Try to start it, nothing. > A slyte > > backfire through the card. Losen the distributor and advance > the > > timing. The car starts and goes again. Reset the timing with > a > > timinglight and everything is fine. Make sure the > distributor is > > secured properly. All goes well for a few days and the whole > scenario > > happens again. What can the problem be that the car self > ajusts its > > timing. The distributor is not lose. > > Help please. > > Thanx > > Have had several Uno's, what year, carb implies conventional > distributor and ignition coil. Adjusting the timing, and it > starts, > may be a red herring. Timing would have to be quite a way out > to stop it starting, I assume the first thing you did was to > mark > the postion of everything, so you can see if they have > shifted. > > Vacuum advance unit ok. No punctured diaphragm? You advance > timing car starts, vacuum advance also advances timing. > > You may have muck in the carb, blocks a jet, engine stops, > wait a while, or have air cleaner off - remove jets - blow > through, and all comes good. If it's a lump of muck it > is held blocking the jet by suction, engine stops, suction > disappears, blockage frees, for a short time. > > Engine won't start, if your timing light is a simple series > flash tube, wire in series with a plug and see if it flashes. > Or get one of the neon tube testers that go in series with a > plug. > > Fuel pump pumping ok? Coil ok? Hall sensor, electronic > unit, driving coil ok? > > Quite often you can have a heat related problem which > comes good when everything is back to ambient. Some > ign. coils fail when hot. Just a few thoughts.
Thanks for the info, but found the problem. I wanted to remove the distributor so I was busy to set the engin to TDC when I saw that the cambelt had a tooth missing. When I removed the cambelt cover I saw that a few teeth was missing. The belt must have jumped the intermediate shaft. Luckily I saw it now, could have cost me a lot of money if it broke. Thanks anyway.
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