vacuum lines for distributor

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really stuck on what vacuum lines run from distributor and where to , any help would be great

It should have a 4mm rubber

It should have a 4mm rubber pipe running from the diagphram on the distributor to a nipple on the inlet manifold.

think ive found them but idle fluctuates

it appears to have two coming off the distributor, its running fine now so must be correct? just the idle tends to fluctuate sometimes what might this be Unknw

lots of white smoke from exhaust where oil after headgasket got in could this be playing up the lambda sensor and therefore idle Unknw