Re: carbon build up

Posted by Fish'n Jim On 2017/7/23 19:29:04

We used to go "blow the carbon out" in the old days. (Is EPA listening?) Even when proper, low compression and out of adjustment will increase deposits. (aka; coking reaction)
Instead of tuning carb by "ear", use exhaust gas analyzer/take to shop w/ one. That's about the only way to get the proper air/fuel ratio for today's gas. About all you can do is minimize it by keeping in tune. Another "we're spoiled" thing of today v back then.

If your getting much oil (blue smoke exhaust) in the cylinder, then it's a ring issue. So oil additives won't help, per se.
I've already stated what I think about the additives market so I won't indulge. And there's a bit of difference in materials then v now, so predicting performance w/o actual test data is speculative at best.