This time of year i always drench the leads and that area in WD40, never had any issues before with that.Good blast with an airline or can of air into the hole upwards is the best way to clear anything.Even more important is to blast the area with air before removing plugs, so you don't get any shite falling into the plug holes.
Cheers gents this is now on my agenda, had a devil of a job changing the plugs last dime due to debris down where the plug go in.She runs a bit lumpy first thing in cold wet mornings always though it was just because the engine was cold.
Quote from: celticdog on 20 December 2018, 07:59:54 amCheers gents this is now on my agenda, had a devil of a job changing the plugs last dime due to debris down where the plug go in.She runs a bit lumpy first thing in cold wet mornings always though it was just because the engine was cold. How old are the plugs?I much prefer the Iridium plugs in my bike, I do notice a big difference, and they're not that much more expensive if you look around, plus they'll last longer anyway so no real money loss.
Quote from: darrsi on 20 December 2018, 12:30:28 pmQuote from: celticdog on 20 December 2018, 07:59:54 amCheers gents this is now on my agenda, had a devil of a job changing the plugs last dime due to debris down where the plug go in.She runs a bit lumpy first thing in cold wet mornings always though it was just because the engine was cold. How old are the plugs?I much prefer the Iridium plugs in my bike, I do notice a big difference, and they're not that much more expensive if you look around, plus they'll last longer anyway so no real money loss.Yeah they're due a change next service which will be in Feb just before the old girl goes for an mot. I've always used the cr8e's but I'll give the irridiums a go this time as a treat now she's reached 50K
Lack of time meant I only got back to this yesterday and only for a couple of hours.I’d ordered a 10mm x 1mm tap which extracted an astonishing amount of grit from the plug hole. That explains why it needed so much torque to get the plug out… I was surprised it didn’t shear off.With the plug hole blocked off to stop debris dropping in it was then possible to clear the drain hole between the two plug wells. No way would an air line have done the job, the passage was stuffed with tight packed oily grit and needed a long drill bit to dig it all out.Still have to persuade plug 2 to come out in one piece then I can clean out that thread... and then there's the right hand half of the engine, which is likely to be worse.
Quote from: Fazerider on 21 January 2019, 09:49:17 amLack of time meant I only got back to this yesterday and only for a couple of hours.I’d ordered a 10mm x 1mm tap which extracted an astonishing amount of grit from the plug hole. That explains why it needed so much torque to get the plug out… I was surprised it didn’t shear off.With the plug hole blocked off to stop debris dropping in it was then possible to clear the drain hole between the two plug wells. No way would an air line have done the job, the passage was stuffed with tight packed oily grit and needed a long drill bit to dig it all out.Still have to persuade plug 2 to come out in one piece then I can clean out that thread... and then there's the right hand half of the engine, which is likely to be worse.The right side will most likely be worse. The bike leans to the left on the side stand so the left side of the engine points down and has a chance to drain whereas the right side points up so all the rain water and dirt collects on that side around the spark plugs. Take your time when you're undoing those plugs and clean the area as best you can. Sometimes working the plugs in and out with a bit of oil helps to clear the threads
Quote from: His Dudeness on 21 January 2019, 06:55:33 pmQuote from: Fazerider on 21 January 2019, 09:49:17 amLack of time meant I only got back to this yesterday and only for a couple of hours.I’d ordered a 10mm x 1mm tap which extracted an astonishing amount of grit from the plug hole. That explains why it needed so much torque to get the plug out… I was surprised it didn’t shear off.With the plug hole blocked off to stop debris dropping in it was then possible to clear the drain hole between the two plug wells. No way would an air line have done the job, the passage was stuffed with tight packed oily grit and needed a long drill bit to dig it all out.Still have to persuade plug 2 to come out in one piece then I can clean out that thread... and then there's the right hand half of the engine, which is likely to be worse.The right side will most likely be worse. The bike leans to the left on the side stand so the left side of the engine points down and has a chance to drain whereas the right side points up so all the rain water and dirt collects on that side around the spark plugs. Take your time when you're undoing those plugs and clean the area as best you can. Sometimes working the plugs in and out with a bit of oil helps to clear the threadsYes, I’ve left a mixture of oil and WD40 soaking plug 2 which I only managed to shift by half a turn before my courage ran out. The force needed to move it that far was alarming.On the upside, it was a pleasure to screw plug 1 into its lovely clean hole: smooth and easy all the way in. I wish Yamaha had drilled independent drain holes for plugs 2 & 3, the fact that the outermost plugs are in the way makes clearing the passageways very difficult. I bet practically every FZS600 out there (apart from Fazersharp’s) has them blocked.Even better, of course, would be if Yamaha had devised a seal that completely closed the area off from rain and dirt.
It would be shite that has gone down the hole, so i'm guessing you should be trying to clear it by pushing it upwards maybe?