Spark plugs keep going black

[Madness]

I still haven't got the exhaust gaskets done caould this be causing the problem? when I back off the throttle at high revs it make like a popping sound

You will get "popping" if your headers aren't sealed properly just as you described. It shouldn't cause the power to come & go though.

[knight rider]

You will get "popping" if your headers aren't sealed properly just as you described. It shouldn't cause the power to come & go though.

could it be that the bike was still cold & couldn't get the power on until it's warmer?

[breakaway]

Yes, bikes will perform like shit if you try to fang it when cold.

[knight rider]

Yes, bikes will perform like shit if you try to fang it when cold.

ahhh I see that must've been it then thought it would've warmed up but it's pretty cold outside so maybe just needs a bit longer to warm up

[breakaway]

Make sure you warm it up before you give it a good thrashing, you will damage it if you try it when it's cold.

[F5 Dave]

Yes it should be warm & yes the ex gaskets should be sealed ideally, but it sounds like you are fouling a plug or so. Dynojet needles are known for wearing the tubes faster as they can be a bit rough. Well, the older ones. This was one of the selling points of Factory over DJ.

[knight rider]

seems to take ages to warm up. could it have something to do with the exhaust gaskets?

[F5 Dave]

not cutting in & out

[knight rider]

nah it's more like a chugging then once the revs gets higher it takes off again weird. maybe a squashed fuel hose somewhere?

[F5 Dave]

is it the later W/C model? Suzi thermostats are too cold for 90s. Read my thread on RF900s for replacement thermostat & how to modify.

Fuel line will only affect on motorway by running out of gas feeling. The chugging at low revs could easily be a plug fouling that often cleans up a bit at higher revs. On an 11 you may not miss the extra top end power, just will drink more gas.

[edit note it is a water cooled 93]

[knight rider]

it has the 1996 wt motor init