With Snow white for a front spark plug its certainly pointing to fueling, couldn't see anything that would be giving an air leak, but may well be worth us removing and taking a closer look at the front inlet manifold in case it has a split in it, you'll know exactly what I mean Phil Maybe take the vac gauges up there next, but they would probably only identify an air leak below the point where the vac gauge connects to Checkout the Desmo Due Paddock on Facebook |