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Starting Member
Group: Forum Members
Last Login: 9/26/2008 5:51:01 AM
Posts: 1,
Visits: 3
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| I bought my roadstar in 2007 used,its a 2006 1700 and it came with aftermarket bub pipes.It had 500 miles when i bought it, and it ran perfect.As I put more miles on, my exhaust is poping now and I'm fouling plugs left and right.I put on 8000 miles on this year and it seams that the problem is getting worse with milage.I hear about how lean it is from dealers,but how can I be fouling plugs then?The back cylinder plugs are black and the fronts are fine,with on carburater I don't get it! Please Help! And the dealer says there's nothing wrong!
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Senior Member
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Last Login: Today @ 10:45:56 AM
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| Welcome to the forum. I do hope someone will make some suggestions. Take it to dealer? Get a shop manual give it a go yourself? If you put a fresh plug in the rear cylinder, how many miles does it last before the popping and fouling start? What kind of fuel milage did you get when it was running good and what are you getting now? Is it using more oil as this problem has worsened? Have you taken a compression test on both cylinders? If so, what did you get? Will it sit and idle for a long time with a fan blowing on it? Or does it foul the plug even at idle? Is the end of the muffler a dry sort of sooty? Or is it oily? Had any service work done to it this year? A compression test will indicate that the rear cylinder is in good/poor shape compared to the good running front cylinder. Low compression will not burn fuel. Maybe a valve needs adjustment? If the cylinder checks out ok, then its ignition or carburation related. Are there valve seals on the bike? Maybe one failed and allows oil to weep into the cylinder. Are you losing coolant? Maybe, the head gasket has a leak and coolant is drowning the spark? Solid state ignition systems are nearly bullet proof. But the pickup at the crank can be fooled if the wire is abraded where it passes out of the case. Finally, the carb may have a loose jet, bad float, broken o-ring or something that lets too much raw fuel into the manifold. There is no reason to believe that the raw fuel will drain to each cylinder equally. Do all the non-invasive tests that you can and collect your results. Do the compression test. Let us know how it goes for you.
nobody rides half as well as they know how.
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Starting Member
Group: Forum Members
Last Login: 11/21/2008 3:47:51 AM
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I had same thing, sounds like SVS. You need to take it back and keep insisting. Should be under warranty. Go sign up to roadstar clinic. com and search SVS. You have it bad enough to remove the jugs and you will need new rear valves. It will look like charcoal has been dropped into that cylinder. http://roadstarclinic.com/ MC
Experience is a tough way to lean, because.... you get the test first and the lesson afterwards.
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Senior Member
Group: Forum Members
Last Login: Today @ 6:41:41 AM
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Go sign up to roadstar clinic. com and search SVS. You have it bad enough to remove the jugs and you will need new rear valves. It will look like charcoal has been dropped into that cylinder. Are you saying there is a known issue with the valvetrain and he's oil fouling the plugs?
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Starting Member
Group: Forum Members
Last Login: 11/21/2008 3:47:51 AM
Posts: 11,
Visits: 54
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Pretty much, Carbon buildup and sticky valves, normally on a 1700 one of the two cylinders will run richer. Mine looked like someone tossed two or three chunks of charcoal into the cylinder. The older model's like the 1600's were really bad, the 1700 they re-worked but my experience as well as others is we still have a problem. Mine goes in again Friday, it's back!
Experience is a tough way to lean, because.... you get the test first and the lesson afterwards.
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