Very sorry to say that after being a great fan of NGK plugs, as was my neighbor, we both experienced serious and identical misery. Please don't shoot, I know most bike guys LOVE NGK's! Me too, until recently. Seems to me you'd first want to verify the correct plug # and heat range of plugs used.Īlso brand. Any suggestions will be greatly appreciated!Īpologies for length here, can't seem to avoid it.

Should I start by readjusting the idle screws or would something else be more appropriate. Tonight it fouled the plug while I was idling along in traffic but last week the plug fouled after I shut it down and then restarted a short time later. I know its rich but I'm not sure where to start working to fix it. I find it confusing that one plug fouls out and the others don't seem to. Got to my destination, shut the bike down, came back 20 minutes later, the bike started right up but cylinder #1 was not firing - plug fouled. I was on surface streets but not too much traffic. Last weekend I rode it approximately 10 miles and it was running great. It was running great when it suddenly dropped a cylinder (#4) - plug fouled.

Tonight I rode the bike approximately 15 miles through stop and go traffic. I just got it to the point that I can really ride it but I can't seem to fix this issue. I'm having trouble keeping my '75 750F from fouling spark plugs.

Blood bowl fouling