Smoking engine

[Ruairidh Dunford]

Good morning Adrian,

Sorry to hear you have not yet solved your issue.

I use the same pistons and rings as you and have on a very frequent basis and I have not had any issues as you describe. My latest set were fitted in in May to the engine I am currently using to tour France in (it has run 2500 miles since being installed and is at the point where I consider it run in) - exhaust is clear and oil consumption has settled to very little with continued improvement, we are using it daily and this I find a very good way to bed everything in.

In your position I would be looking at glaze busting the bores - this should be done by a professional who you know and trust, if not sure, ask A7 engine builders local to you for a recommendation. I have established an excellent relationship with my local machine shop, who bore blocks the way ‘I’ want them done, others will have done the same near to you. Take all four pistons, numbered to the bores, with you. They can measure and comment on anything they find, which may be very useful and affect the way forward.

Once this work is complete post some photos here of the bores for comment, get another set of rings from the same source, gap and fit them.

I shared elsewhere my run-in routine, this is tried and tested and I can link to it, if necessary.

I am confident this will resolve your issue or highlight the cause more clearly.