Sunday, March 29, 2009

Redwing19 IBA - Bike Prep

In preparation for the 1000 miles in 24 hours IBA run, I purchased a set of spark plugs and air filter figuring to do a quick tuneup. But after getting the fuel tank off--required for air filter access--I decided to also remove the smog equipment.

The smog equipment on a Valkyrie consists of a vacuum actuator controlling a pair of reed valves that feeds air into the exhaust through tubing. A misguided attempt to reduce pollution through dilution, it also causes backfiring on closed throttle because the reed valves wear and leak.

Following instructions I downloaded from the Valkyrie Riders Cruiser Club web site, I began the job of disconnecting, removing, cutting, and filling. Though it took longer than expected (of course it did), I'm happy with the result.

I still have a bit of backfire on the left side from cylinder #2. I think I might have a worn intake &/or exhaust valve--though if I'm lucky a valve clearance adjustment might fix it. If it gets too bad during the 1000 mile run, I'll pull the spark plug wire on cylinder #2 and run it as a 5-cylinder!

Now, on to planning what I'll take along for the ride. Stay tuned.
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