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My rx8 kinda shakes from the engine is this not normal for an rx8?

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Old 03-26-2018, 08:58 PM
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My rx8 kinda shakes from the engine is this not normal for an rx8?

Im kinda scared cause i keep hearing how rotarys are meant to be smooth runners
Old 03-26-2018, 09:43 PM
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mine kinda shakes when idling while the ac compressor comes on and when im climbing 7-8k rpm, i guess my motor mounts in bad health.

check ur motor mounts too.
Old 03-26-2018, 09:45 PM
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Thank you i will do just that
Old 03-26-2018, 11:11 PM
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How much does it shake? Anything below a running DVD player vibration shouldn't be a concern.

Rotaries are not the smoothest when idling, especially when the engine mounts are shot.

When I had a 99 Corolla, I could see the headlights move due to the vibration at idle, LOL
Old 03-26-2018, 11:55 PM
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o.. mine's definitely more than a dvd player vibration.. motor mounts blasted?
Old 03-27-2018, 12:14 AM
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From what I have read here, motor mounts on 8s do seem to fail sometimes. These hydraulic motor mounts can have a pretty short life.

You could just jack your car up and do a visual check.
Old 03-27-2018, 07:25 AM
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It only shakes when the car is sitting still
Old 03-27-2018, 07:52 AM
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It could be motor mounts but it could also be an unhealthy engine with a lumpy idle.

My motor mounts were fine but my vibration/shaking went away I finally replaced my low-compression engine with a Mazda reman.
Old 03-27-2018, 11:20 AM
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Is it an automatic? It shakes while stopped but in Drive?

Any dash lights on? Perhaps put up a video?

Does it shake less with A/C off?
Old 03-27-2018, 12:04 PM
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I would just take it to the dealer for your next oil change, mention the shaking and ask 'em to check the motor mounts. Shouldn't cost very much.
Old 04-12-2018, 07:44 AM
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Wink

Originally Posted by Immanoob
Im kinda scared cause i keep hearing how rotarys are meant to be smooth runners
Mine was shaking, not keeping 900 RPM .. new spark plugs , wires and coils with life time warranty (from ryanrotaryperformance) made huge difference.
No hot start problems, cold start slower, but also I learned try to reheat coils for 5 sec first and it seams to work well.
But now engine works so smooth.. more quiet on lower RPM and still... no shaking amazing. Now checking suspension.. after this I am getting ready to rebuild whole car. I love it love it love it.. it gives so much pleasure to drive.
Old 04-12-2018, 07:46 AM
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Originally Posted by Immanoob
It only shakes when the car is sitting still
yeah when you stop on traffic lights.. and then it starts to dance..
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