Hi guys, I’m looking for some diagnostic help. 1985 VF500f2 I’m mechanically minded but I’ve never worked on a V4 before. So I go to fix up my old VF500 that’s been sitting for a few years. Stripped/ checked/cleaned the carbs, all looks ok, fuel pump works. Changed spark plugs, have a spark on each lead. (Currently using my car battery with made up leads) It just won’t start tho. it did run one time, when I had forgotten to tighten up the rubber manifold connectors tight, it fired up and ran away a bit so I shut it down. Mechanically it sounded sweet, so I know it’s a runner. Last night I gave it a wee squirt of easy start but still NOTHING!! So I’m back to thinking it’s the spark? Surely I should get something with that spray? The sparks are white, I thought they may be weak but a biker friend said they were fine. I’ve cleaned all the connections on the coils, swapped cables over (and back again). tested 2.8A resistance through the coils, It sounds like it’s close to starting but won’t catch and backfires. Does the spark need to be blue? Or does anyone have any suggestions?