Motorcycle Questions? Ask a Mechanic.
Hi and welcome to the site, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.
Initially, please click HERE. Using the diagram, please post back which particular part is "...glowing red hot..."
Additionally, post back with the burn colors of the old sparkplugs.
For any part of the exhaust to glow red would almost always point to an incorrect fuel mix.
With the engine off, is that portion turning gold or blue ?
It should be closed as it would offset the air/fuel mix of cylinder 1 and would affect also the others particularly when idling.
Normally, rurning Gold would point to a slightly rich fuel mix while blue would be lean.
A likely possibility is that #1 sparkplug was not firing (cleanly) before hence the vacuum leak has no (heating) effect but of course would cause very poor fuel consumption since running (efficiently) on only 3 cylinders.
Yes on the closing of the vacuum (leak).
And it would help to determine the burn color of the sparkplug tips as it would point to whether the mix is rich, lean or correct.
Sorry, but "...getting fpr..." ?
Hold the fuel pressure regulator but yes on closing the vacuum leak.
Observe the F4i for a couple of days and then check the burn color of the spark plug tip. If:
To my knowledge no; well not exactly catalytic converters on 2002 models but rather a closed loop since it has an O2 sensor.