WS6 Formula
New Member
Not sure if the vacuum advance module is causing your problem, but it is one component that is worth checking out to make sure it is working properly.
My first bike was a 1986 V-Max that I bought new. Something about it just didn't feel right to me so I took it to a dealer as it was under warranty and they said that it needed new plugs, but I just changed them like a week before I brought it in. I took it to another dealer and the mechanic said that there was nothing wrong with it and in fact it was actually the strongest pulling V-Max that he's ridden. That was before I told him that I had installed a Dyno Jet kit.
I also called Yamaha and talked to a technical adviser and he agreed with the dealers that there was nothing wrong with the bike. I then installed the Dyno Jet Stage 7 kit with the Kerker 4-2-1 exhaust and it still didn't feel like it was pulling as hard as I thought it should be. So I dug into it and checked everything and found that the vacuum advance module was wired backwards from the factory. I corrected the wiring and Whoa! What a difference. It felt like a different bike.
My first bike was a 1986 V-Max that I bought new. Something about it just didn't feel right to me so I took it to a dealer as it was under warranty and they said that it needed new plugs, but I just changed them like a week before I brought it in. I took it to another dealer and the mechanic said that there was nothing wrong with it and in fact it was actually the strongest pulling V-Max that he's ridden. That was before I told him that I had installed a Dyno Jet kit.
I also called Yamaha and talked to a technical adviser and he agreed with the dealers that there was nothing wrong with the bike. I then installed the Dyno Jet Stage 7 kit with the Kerker 4-2-1 exhaust and it still didn't feel like it was pulling as hard as I thought it should be. So I dug into it and checked everything and found that the vacuum advance module was wired backwards from the factory. I corrected the wiring and Whoa! What a difference. It felt like a different bike.