05-09-14, 05:51 PM
First, don't sweat. Compression testing and all that implies are a long way off! 
By all means check the intake stubs but even heavily cracked ones tend to stay air tight.
I'd start by taking off the plug cap, cutting 1cm off the lead and refit. You could have a poor contact between lead and cap, which you might have inadvertently 'made good' by your plug testing.
Consider also a fuel-related misfire. If the float needle seat O-rings start to leak, you can get a rich misfire on the affected carb.
What's the year and mileage of your steed? Ridden regularly? Any recent servicing or mods we should be aware of?
Mike
By all means check the intake stubs but even heavily cracked ones tend to stay air tight.
I'd start by taking off the plug cap, cutting 1cm off the lead and refit. You could have a poor contact between lead and cap, which you might have inadvertently 'made good' by your plug testing.
Consider also a fuel-related misfire. If the float needle seat O-rings start to leak, you can get a rich misfire on the affected carb.
What's the year and mileage of your steed? Ridden regularly? Any recent servicing or mods we should be aware of?
Mike