The 1200 will be on the hyd lift shortly and then the fun will start.
My bikes not right?????
- Thread starter RPMDAKAR
- Start date
- Status
so after all that you dont know where the coils might be,really!
Bendy toy
Registered user
So you know where to find the stick coils.
Canbus is pretty reliable so just forget about it.
Sensors ditto but faults usually show up in ways a non electrickery person can resolve. Some use potentiometers rather than switches but not rocket science.
Fuel injection. Leave that to the experts but TBH it works.
Coils - just the same. Throttles - just the same except no float bowls. Valves and other oily bits - just the same. The Single Cams even have locknut tappets. Bearings - far too many needle rollers for my liking but that's how it is.
It's not if you have to remove the plastic rocker cover protector to pull the lower coil.
It's only the connector that plugs into spark plug cap you'll be unplugging. No tools required
Here's the heads up Guys, had the bike up in the air, (68 yrs of age and bending is not possible with my gut!) ran the bike & disconnected the main coils in sequence, result? Nothing! a slight change in engine note and some loud clacking from the spark going to earth and that was it. However on removing the LHS coil cover there was an excessive amount of oil mist and a dollop of red grease on the stick coil, this is to stop the water ingress I assume, so I have cleaned the excess gunk of said coil and am now going to screw the shit out of down the Bewdley bypass to see if its any different!!!!! One result is that now will have to source a proper tool kit, as the one that is on the bike is completely useless, No spark plug socket, Coil puller(did it with large screwdriver, my dessert wangles came in handy there!) No means of wheel removal, a rusty bar with a nut welded on for the front, but no torx socket for the lock nut and rear wheel. Will place ad in wanted section later.
....loud clacking from the spark going to earth and that was it........
I think you may have avoided this if you had followed Steptoes suggestion - breaking the LT side of the sparky maker thing!
I have similar bike, same age and just past your mileage.
I would sunsequently check the valve clearances haven't altered due to a slack locknut if the coil prognosis brings no improvement.
PS Is there still oil in there??
I think you may have avoided this if you had followed Steptoes suggestion - breaking the LT side of the sparky maker thing!
I have similar bike, same age and just past your mileage.
I would sunsequently check the valve clearances haven't altered due to a slack locknut if the coil prognosis brings no improvement.
PS Is there still oil in there??
Pull the electrical connector off. No need for any tools/spoons.
It's not the main coils you want to disconnect/unplug. It's the secondary coils underneth (i'll say again simply unplug the connector where it joins the coil cap. You can see it right in front of you). You need to check if the main coils are running. So disconnect the secondary circuits on the lower plugs on both sides..
Bendy toy
Registered user
It's not if you have to remove the plastic rocker cover protector to pull the lower coil.
D'Oh. Mine runs like a dog on the secondaries so I always forget about them. I'd love to try the bike on a dyno and see if they make any difference at all.
I leave them plugged in. The plug tips all look good with no hot insulation smell from the secondaries so they carry on. When the secondary coils eventually pack up, I'm going to try a pair of three wire car stick coils with a plug in HT leads and plug caps.
Hey, the jury is still out here, been for a real thrash round the roads of Worcs, Stopped and altered the huge screen slightly so noise level has decreased, will have to wait for wife to come home and get her arse on the back, she will know if its different. Secondary Coils eh? that will entail a grovel around on the floor but will attempt to disconnect at the plug on top a la Steptoe's advice, the LHS needs the crashbar removing if its faulty. My neighbors may send for the men in white coats if the spy me sniffing my coils under the bike. What a picture that presents! (see, still got my sense of humour) Any local reading this with a 1200GS 2005 ish willing to come and put my paranoia to rest?
Bones
Registered user
You need a thin walled plug socket else it will foul the casings. Or do what I did and lightly angle grind a 'nornal' plug socket
Sounds like it could be crappy/watery fuel. I had similar symptoms once, but they passed once I'd filled her back up with fuel from another garage rather than the local Tesco which occasionally seems to make my bike run rough.
PM sent......
Only spit distance away with a GS911
Roger
Only spit distance away with a GS911
Roger
Bendy toy
Registered user
My secondary spark plugs looked a good colour when I changed them recently so I assume the coils are fine. Both are original OEM. The primaries both failed at about 40K miles/6 years old. They were easy to sniff without grovelling at floor level - pop them out and hold like cuban cigar.
TBH, one was niffy enough to notice as I pulled it out of the cylinder head.
BTW, the 911 cannot directly diagnose a faulty coil. You have to work it out from the various symptoms.
TBH, one was niffy enough to notice as I pulled it out of the cylinder head.
BTW, the 911 cannot directly diagnose a faulty coil. You have to work it out from the various symptoms.
Have had an appraisal done on my 1200GS by another Club member and he agrees with my inclination that all is not right with this machine, plugs checked and all running very lean, all leads & connections taken apart & cleaned and replaced, GS911 plugged in and apart from the alarm fault all seems to be well with the box of tricks, that only left the mechanical side of things and within minutes, using some very stone age technology ( a srewdriver against the rocker cover!!!) we concluded that the noises emanating from these, especially on the LHS and a comprehensive road test confirmed that all is not as it should be in the rocker/tappets dept. I will contact my dealer tomorrow and inform them of our findings and take it from there.
I must thank all & sundrie who have forwarded ideas, its been a great demonstration of Club Members uniting in the assistance of others. Keep it up everyone.
I must thank all & sundrie who have forwarded ideas, its been a great demonstration of Club Members uniting in the assistance of others. Keep it up everyone.
Bendy toy
Registered user
Running very lean could be the fuel pump pressure is low, but I'd have thought the 911 would have spotted that.
A misfire caused by a bad coil generally causes the ECU to feed in more fuel so the plugs and O2 sensor get sooted up. So if its running lean we can discount the coils as part of the problem. Probably.
A misfire caused by a bad coil generally causes the ECU to feed in more fuel so the plugs and O2 sensor get sooted up. So if its running lean we can discount the coils as part of the problem. Probably.
Take the rocker cover off and have a look should be a piece of piss for you with all that background you have
Agreed, but as I trusted and paid a non franchised mechanic, I will give him the opportunity to remedy the fault. Failing that, trading standards will be informed. If I mess with it. find a problem, what mechanic is going to entertain any claims made by me? Human error happens, and I believe in giving someone a chance to rectify the fault. Nice guy me!
Fingers problem
Just reading your thread and I would think it would be worth ringing dealer who serviced it and ask what if they did, especially the tappets. What parts are on the invoice? Just a bit strange that this came about after a service ? Might be a human problem .
Just reading your thread and I would think it would be worth ringing dealer who serviced it and ask what if they did, especially the tappets. What parts are on the invoice? Just a bit strange that this came about after a service ? Might be a human problem .
Have arranged to trailer bike back to Dealer at 9 am on June 18th to arrive cold, I have also explained my findings as per recent post and he has agreed to sort it. At the time of said service I was informed that the tappets were "tight" and had been adjusted accordingly. However the noise emanating from the rocker covers suggest they are now too slack, especially on the left side where a distinct "clack" can be heard. I do have a second opinion from a forum member who knows his way around the 1200 GS's, so I am confident it will be sorted to my satisfaction, albeit after a second trip of some 160 miles round trip.
- Status
Similar threads
