Redex causing issues ??? Or just a coincidence ???

[reds]

the plot thickens !!!

taken bike out tonight on fair old jaunt - about 45mins / 30miles

pulled it up on driveway and it started pissing brown coolant out of the overflow tanks rubber hose (the one that runs down into the loop at the bottom of the fairing ) it was also idleing at about 2K revs as opposed to the usual 1K

does this shed any light on the rattling ? or is it another issue altogether ???

[tk400]

have you tried draining the tank yet and using a new batch of fuel...It will be running lean because of the redex and this would cause a raised idle speed ...would also cause a raised engine temp..hence overflow....????? maybe....

cheers

Regards TK400

[reds]

didnt hve time to take it off last night, its doe just over 100 miles now, so figured if fill it up now shouldnt have much redex left in it

[reds]

took it tp petro, station today, was idling at 3k revs !!! filled it up with petrol, minus redex, had to do the 25 mile jaunt home.

ended up pulling in about 5 miles from home as the temp guage was coming up to red !!!

seems with none redexed petrol th rattling wasnt as bad, but in general the whole engine seems to sound different, as i accellerate seems to make more of a whinning noise, and it doesnt seem to produce as loud / deep an exhaust note

rattling is still there, but not as prominant, and the general whine on the engine as it winds up sounds concerning, sounds quite chuggy at idel too.

any ideas ? im worried its pretty fecked

[tk400]

Check your oil. you may have had leaking needle and seats in your carbs. could possibly have diluted your oil. Its a long shot as it is unusual for this to occur on bikes fitted with fuel pumps. still if you dont turn the fuel tap off it can happen. cheers


Regards TK400

[reds]

defo something wrong, and seems to be getting worse !

rode the bike into work this am (2 miles ish) got it to the bottom of my road, dropped the clutch - engine cut out. this then happened at every other junction, as i was slowing down, dropped the clutch, engine just cut out. Always fired straight back up - but very concerning - even did it in works car park as was slowing down to park, just cut on me again

could it be to do with the oil as suggested - or would this behaviour suggest something else ???

[RedexRobB]

[quote="reds"]rode the bike into work this am (2 miles ish) got it to the bottom of my road, dropped the clutch - engine cut out. this then happened at every other junction, as i was slowing down, dropped the clutch, engine just cut out.quote]

That sounds very similar to the side stand switch playing about to me.

[reds]

its a h model, so far as i am aware it doesnt have a cut out switch on the side stand

[masterofinsanity]

what about the switch on the clutch?

[reds]

is that the one on the lever ?? will have a look. just come back home on it. did exactly the same, when it went to idle, just cut out on me. put it up to the limiter to get some life into the engine, but still a few yards later did it again. also the temp guage was up to almost halfway - its only a 2 mile journey, if that !!!

sure its got to be linked with this odd rattle, could it be fuel starvation at all ? or the fuel pump itself ?? would that rattle / click if it was faulty. or is it something more serious like head gasket ???

[RedexRobB]

Have you found where this rattle comes from yet? Im beginning to wonder if its the fuel pump. Iv seen here some fuel pumps getting quite noisy when they have had it. Get that tank off, the engine started and have a listen round.

[reds]

going ot whip the tank off toinght - dont know if it is fuel pump as it only seems to make the rattlnig noise between 4 and 6k revs. thats why im thinknig its something to do with the engine, but it doesnt do it under engine breaking. combined with this stalling issue, im beginning to think that it has to be to do with the fueling - perhaps it could be two seperate issues !!!

wil have a look around tonight / get some pics and post to see if anyone can spot anything unusual

whilst the tank is off is the cam chain you mentioned that may be rattling easily accessible too ??? is it worth stripping it ???

[RedexRobB]

to check the cam chain tensioner youll need to take the RHS fairing off, it has a plastic screw on the side of it. Since yours is an H model it wont have an expansion bottle in front of it so side fairing off, undo 8 bolts, light tap with something soft and the case should drop off. Might get a little bit of oil leak out but thats normal You should be presented with this

download/file.php?id=1342&mode=view

[reds]

I have 2 vids of the bike idling, you can see it hunting in the one, and on the other you can here the noise from the cam-it sounds pretty bad to me !





This is the cam when it is opened up:








whilst fairing was off I also noticed coolant over the radiator / pipes and oil/much down on side of the engine(see below) would this suggest anything else ???









with regards to rattling, cant film this as it only does it when a) bike is in gear b) it is over 3.5K revs, then seems to stop at 5K revs. Almost as if their is a sweet spot for it. Doesn't happen under engine braking - only when accelerating

Didnt get around to taking tank off as started pissing it down. Wil have a go tommorow / thu and upload movie

[RedexRobB]

wow thats one noise bugger! The rattling reminds me of my clutch which is normal to be a bit noisy but not that loud. But it also sounds like its a cross between a misfire (hence its hunting as plug comes back in) and cam chain to me, although the tensioner piston doesnt look like its too far extended. However, I know there was a member here who had a noisy cam chain, and was only at a particular engine speed, i remember he dropped it round Cargo's and he found it was a tiny bit of the tensioner blade broken.

Your temperature issue could be some air in the cooling system.

What i would do personally is clean up the plugs if you havent already and see what that does for the hunting issue. I suspect its as noisy as it is on tickover because its misfiring.

Also notice the springs on the exhaust headers are loose!