White smoke and code 16688 issue

Hi folks,

After some advice regarding mk3 toledo issue.

It's a 2005 1.6 petrol. (Big ass model!).

There's a fault showing on vcds lite, 16688 - cylinder 4 - misfire. There's also a bit of white smoke if you plant it in 1st or 2nd.

Initially with the smoke I checked coolant for a leak but it's not leaking or overheating. Still a possibility for the head?

Then I scanned and saw the fault so is there a likelihood it's connected?

Am thinking first thing would be a compression test or is would that be waste of time?

Cheers

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Sorry forgot to add about 2 weeks ago the TCS light came on the dash and the engine light also which flashed intermittently. The car seemed sluggish as if in some sort of limp mode and very jumpy or chuggy.

I rescanned but no further faults and the lights went out after a day or 2 and haven't been back

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Well to save a bit I stuck a bottle of stop smoke in and it seems to have done the trick for now.

Also changed the plugs and one HT lead and running like a dream!

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