(08-03-25, 03:55 PM)unfazed Wrote:(08-03-25, 12:51 PM)Sannox Wrote: So far, no air intake blockage, got a K&N filter in, lightly oiled and all clean in there, plugs are NGK and measure correct resistance as do the plug caps and coils. Got the carbs stripped, everything looks clean, no splits in the internal rubber, rubber headers have no splits or any perishing, no internal corrosion. Will keep going, got a compressor and blower so can blow through jets etc to make sure all clear. Never checked the TPS in the whole time I've had the bike (15 years) will be checking that once all back together.
Due to the design of the TPs the tracks can wear internally or the spring loaded wiper section can weaken. sometimes it throws up a code on the tacho 3000 revs then 0 and then back to normal operation, but not always.
Fake NGK plugs are a big issue, especially those bought on line. You have to be completly sure of where you get them. The problem was so big that NGK put a notice on their website.
How to identify fake NGK SPARK PLUGS - Niterra
There are many videos on how to check them on youtube
Forgot to mention the Diaphragms colu have pinhole splits. Not seated properly, this is unlikely, but possible
Plugs are ok, got them from M&P, I never buy them online. All put back together and took it for a test ride, seems ok so far, clean revving to 10k (rare it take it past 10k) through the gears. Diaphrams seated ok, if any pinholes, I can't say I noticed any, the rubber was fine as far as I can tell, no cracks nor splits etc.
All I did was clean everything and put it all back together, could have disturbed some tiny bit of residue or muck. I did take out the fuel tap/filter and make sure that was clean too.
Got a compression test kit on the way, will need to balance the carbs, but so far so good.