20-07-2014, 08:47 AM
I'm more than happy to help if I'm not working ![Smile Smile](https://www.306oc.co.uk/forum/images/smilies/smile.png)
Having seen the issue I'd say it's definitely rings. Stem seals/valve guides tend to let the oil into the cylinder overnight causing a smoky start, this is worse when its revved.
I'd still try pouring a strong solvent into the bores through the spark plug holes and leaving it a couple of days.
![Smile Smile](https://www.306oc.co.uk/forum/images/smilies/smile.png)
Having seen the issue I'd say it's definitely rings. Stem seals/valve guides tend to let the oil into the cylinder overnight causing a smoky start, this is worse when its revved.
I'd still try pouring a strong solvent into the bores through the spark plug holes and leaving it a couple of days.