Spark plugs

[GSF]

check the compression and carb slides, these models are good at losing ring tension that drops compression they then carbon up the plugs as the combustion temp is not hot enough. they also wear out the sealing face of the carb slides on high milage bikes the mixture then goes out the window fouling the plus again. You could try running a cr7e to give the plug a bit more life.

Yeah, my Bandit has a dicky piston ring on the #2 cylinder so compression is slightly down. Other three are fine, shouldn't develop into an issue while I own the bike - only 6 months until 6F.

You're dead right though, when I first got it there was a huge amount of mucking about with carbs to be done and I went to a slightly hotter plug. After that it has been running mint ever since with a carby synch and fiddle every couple of months.

[turner]

Yeah dude, you may want to check this. My '92 Bandit 250 eats NGK CR8Es, which are the OEM plug.

ye, you are right, dont know how i misread that ????

[GSF]

ye, you are right, dont know how i misread that ????

Yeah, I thought a B-sized plug seemed odd. Bike shop I used to work at, we used a lot of B-size NGK plugs and they usually (from memory) went into big twins like Hinckley Bonnies, Norton Commandos, that sort of thing.

I don't know if you're already wise to this, but there are some good resources that have been bloody invaluable to me in the last two years I've owned the little Bandit.

1st is this Sunnyside Feelin' dude, it's all in Japanese. Run it through Google Translate and go to the Bandit 250 section. Sometimes it turns into really cryptic Jinglish but you get the hang of decoding it after a while. Good maintenance info and specs.

http://www1.synapse.ne.jp/s-hara/

2nd is the message board Bandit Alley, I get lots of good help with the 250 there.

Also find a workshop manual for the Suzuki Across, it's got the same engine as the 1990-1994 Bandits.

http://suzukiacross.org/downloads/