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- DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)

- - Shaky engine on cold start (https://www.miataturbo.net/diy-turbo-discussion-14/shaky-engine-cold-start-91371/)

elior77

11-28-2016 04:22 AM

Shaky engine on cold start

Hey,

It is a 95 miata with turbo (t28) on it, I installed a DIYPNP in it - works great.

On cold start the engine is vibrating alot... what could it be ?

I have a 97 miata, turbo too and DIYPNP too - no shacking on cold start...

Thanks !

akbloom

11-28-2016 11:42 AM

Tuning? Sounds like your cold start enrichment needs adjusting.

adryargument

11-28-2016 03:08 PM

Not enough fuel, starting to choke.
However my car can idle on 3 cylinders, which causes it to shake like hell - enough to shake the gearstick erratically.

elior77

11-29-2016 09:19 AM

The cold start afr is 13ish I have a full log of a cold start - I don't think it needs more fuel - but I'm willing to try.

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