Gunson G4172 Motorcycle Colortune Kit 10mm

Although the smallest spark plug size makes it slightly difficult to see the combustion, not a problem with more standard sizes, it does a great job of helping to tune carburettors.

not enought info in the book about things that dont work (like on no3 pot i could see it arcing )or a colour chart

Had high expectations for this product.Was immediately shocked by the poor quality as soon as I unpacked it. Like something you would get in a christmas cracker. Cheap plastic and design.Also didnt work great for me could barely see anything . Waste of money

never used the kit but with your very good advise on tuning multiple carbs was absolutely priceless thankyou lots for an incredible tip with a simple piece of rubber tube thanks to this was able to set the carbs on my zzr 1100 Thankyou ! Barry

Husband brought it for his bandit.... Dosnt work on Bandits. £30 for it being useless for the bike. Double check your bike is compatible 1st.!!!

Didn't work for me on a 2002 zx7r, had to use ht extension as my plugs are deep in the head and the spark just kept mostly arcing out to the head causing the bike to misfire and sometimes cut out, for the few moments it didn't arc out its difficult to see what colour the spark is unless you rev it a bit which is not how you adjust the mixture, had to turn all lights off in garage to see anything, also the copper washer got stuck in the head after removing the plug and I did only put it in very lightly as described in manual. This is a cheap and tacky thing but then again what do you want for £40