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Engine Shake When Turned Off...Normal?


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Up front: nicely running stock '75 with newer engine mounts (<1yr)

When the car is turned off, the egine gives a good 'kick' meaning one good shake or 'rock'. Is this normal?

Engine is in good running shape and is a factory rebuild with ~50,000, and as I mentioned new engine mounts.

One thing is for sure, this is not 'dieseling' sometimes associated with carbon build up, etc.

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Timing? Dieseling is also caused by bad timing, not just carbon buildup.

Also does your carby have a cut of solenoid? If so it could be on the way out.


1971 - 2002 RHD VIN 1653940. Agave (stock with Pertronix & 32/36 Weber) - "Cactus"

1972 - 1602 RHD VIN 1554408. Fjord (with 2L motor, 5spd & LSD - Weber 40/40 to come) - "Bluey"

1984 - E30 318i VIN WBAAK320208722176 - stock daily driver

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I can work at a picture, but don't think it will help. It was equipt with emission equipment, but all has been removed.

As I said this is NOT dieseling/running after the ignition is killed

The cut-off solenoid is functional.

I'll try to be more specific: When the ignition switch is turned off the engine stops like it should. But as it is stopping it gives one GOOD shake.

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It's normal. Look at your trans mount first. Then try to rock the engine with your arms and see if it moves around a bit. Mine does it when it idles high and in general, the mounts are a bit tired. Also the M10 is not a perfectly balanced motor, hence no harmonic balancer.

Also I have noticed that a 2006 focus I drive at work likes to rock the motor once the ignition is off.

68' 2002 DD

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