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For starters, this is the first carburated engine I've ever worked on, though it's a simple one, I'm still learning.
My b18 has run solid for the year that I've owned it, up until last thursday... I filled up with premium and pulled out of the station, she died at the first light I came to - started right back up and got me home. The next morning on the way to work, she gave up! backfires galore!
She was due for a tune-up anyway, so I replaced the cap, rotor and plugs, checked for spark - two wires were bad, replaced those... still backfiring...so here comes my carberatto quandry: I've go 4-bolt SU's - when the motor is idling, and I open up the forward carb, she revs just fine, but when I open up the rear, the motor cuts out / backfires... I'd imagine it something to do with the fuel mixture? An thoughts?
Michael H.
Portland OR
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