Post 816590 by Bigsi15 on 2018-06-17 10:22:44
Hi all So how long do you go between replacing spark plugs? I run genuine plugs on a nearly stage 2 tuned 850 which generally get driven like an old person but they have been in there a couple of years maybe 30k miles. Don’t really want to replace them unless needed! Do they give any signs when they are old?? Thanks!