Need help!
I have a Vstar 650 classic, all stock.
Here's my problem:
Starts up no problem. It's running too rich. Symptoms: Spark plugs totally black, fouled. Oil very black, backfiring when decelerating, very bad MPG at around 30, was 50 before.
What I did: replaced all jets, cleaned carburetor, checked float level, changed gas, turned pilot air screw 5 times out (normal 2.5 times).
Still backfiring...
What else can I do?