marriedman Posted January 15, 2015 Share Posted January 15, 2015 SuperBeef you're getting a lot of amateur speculation here with no actual troubleshooting procedure. Yeah I only have 40 years of owning, working on motorcycle's and was ASI certified for 20 year. Pfft! Is that all?! Link to comment Share on other sites More sharing options...
Member Contributer Switchblade Posted January 15, 2015 Member Contributer Share Posted January 15, 2015 SuperBeef you're getting a lot of amateur speculation here with no actual troubleshooting procedure. Yeah I only have 40 years of owning, working on motorcycle's and was ASI certified for 20 year. Pfft! Is that all?! Yep sorry . Link to comment Share on other sites More sharing options...
Lint Posted January 16, 2015 Share Posted January 16, 2015 So, um, new engine courtesy of the dealer or? Link to comment Share on other sites More sharing options...
Lint Posted January 16, 2015 Share Posted January 16, 2015 SuperBeef answered a PM from me. He said this: I apologise I have been so busy with work and have had flu. Pics etc and hopefully a fixed bike will be uploaded later today if not tomorrow. Basically the coil on #3 went bang, blew the plug out and ruined the thread going into the cylinder. I'll be home in about 6 or 7 hours to post an update Link to comment Share on other sites More sharing options...
Lint Posted January 16, 2015 Share Posted January 16, 2015 Hey Look, my picture doesn't take up the whole page!!! Link to comment Share on other sites More sharing options...
Otaylor38 Posted January 16, 2015 Share Posted January 16, 2015 Excuse my lack of knowledge here. How can a coil blow a plug out? I thought they just stopped sparking, n just didnt run on that cylinder when a coil went? Link to comment Share on other sites More sharing options...
Beck Posted January 16, 2015 Share Posted January 16, 2015 Excuse my lack of knowledge here. How can a coil blow a plug out? I thought they just stopped sparking, n just didnt run on that cylinder when a coil went? +1..... Coil dies, you get no spark, but I don't think you get a big plug spitting "asplosion" at the then dead cylinder..... Link to comment Share on other sites More sharing options...
SuperBeef Posted January 16, 2015 Author Share Posted January 16, 2015 Sorry for the lack of updates, working over the holidays and a week of being ill mean I didnt get far with it. Anyway, pulled the airbox off. got down to the coils, #1,2 and 4 pop straight off, #3 lifts up but wont pop off properly. End up getting mole grips onto it. have someone hold the bike down while i yank it out. See the pics below Coil has pretty much exploded and taken out the spark plug or vice versa. I've pulled the other plugs and they all look relatively ok so I assume coil failure. I was having a slight missfire recently having ridden a lot in the wet. Ive got 95% of the sparkplug, the vast majority of the ceramic and have about 5-10% of the electrode unaccounted for. The plug itself had popped out and been wedged by all the ceramic and bits of coil so thankfully doesnt appear to have gone through the engine. I've still not got round to doing a compression test which I plan to do tomorrow. I've spent almost a fortnight trying to find a 10mm backtap. For some reason we cant get them in the UK? Only ones I have seen are listed in the US with about a fortnight delivery time. Instead I've had to opt for a standard chaser to clear the thread. Im not planning to pull the head of assuming the compression is ok. I cant really justify making such an outlay on getting work done on a relatively old bike unless it justifies it. There doesnt appear to be any issue with the inlet valves having looked down the throttle bodies. A compression test should show tomorrow Pics are in no particular order, apologies if you have slow internet theyve come straight from my phone Link to comment Share on other sites More sharing options...
Member Contributer VFROZ Posted January 16, 2015 Member Contributer Share Posted January 16, 2015 I can't see how a coil can explode or cause that much damage. The only things I can think off, is that the plug was not tight and you've had hot gas bypassing and melting everything. Or debri inside the cylinder smashing the plug and burning everything else. A hole in your piston would explain all the oil in the air box. Link to comment Share on other sites More sharing options...
Beck Posted January 17, 2015 Share Posted January 17, 2015 Yup, that's quite freaky, what happened there..... Possibly, the mechanic did not tighten the plug adequately and it loosened to the point where the cylinder ignition gasses and explosive pulses was beating up on and burning the coil and plug as mentioned on the previous post till things just eventually blew up to smithereenies...... You might have a good case against the shop that worked on your bike, as long as you can prove/convince them that you did not touch that plug and coil after they worked on it.... Link to comment Share on other sites More sharing options...
Member Contributer Cogswell Posted January 17, 2015 Member Contributer Share Posted January 17, 2015 I've never seen anything like it. Link to comment Share on other sites More sharing options...
Otaylor38 Posted January 17, 2015 Share Posted January 17, 2015 When was the last time you had the plugs changed? I to, have never seen anything like it Link to comment Share on other sites More sharing options...
MuskokaMike Posted January 17, 2015 Share Posted January 17, 2015 Same thing happened to my 2006 Honda Ridgeline, garage put heli-coil in and must have gotten chips into cylinder. Rebuild and $7000.00 later all is good!! Link to comment Share on other sites More sharing options...
Member Contributer vfrcapn Posted January 17, 2015 Member Contributer Share Posted January 17, 2015 I'd be real worried about debris in the cylinder with that kind of deconstruction to the plug. Link to comment Share on other sites More sharing options...
duccmann Posted January 17, 2015 Share Posted January 17, 2015 So since it ran great I'm assuming before the valve check, why go through all this and not take it back to said mechanic who obviously screwed up somehow, especially after spending...what $7-800 dollars, atleast that's what they want here in Cali. Good luck Link to comment Share on other sites More sharing options...
Member Contributer Switchblade Posted January 17, 2015 Member Contributer Share Posted January 17, 2015 Did it blow a spark plug out ? Hmmmm !!!!!!!!!! SuperBeef you're getting a lot of amateur speculation here with no actual troubleshooting procedure. Yeah I only have 40 years of owning, working on motorcycle's and was ASI certified for 20 year. Pfft! Is that all?! Yep sorry . Make that 41 years !!!!! Link to comment Share on other sites More sharing options...
SuperBeef Posted January 17, 2015 Author Share Posted January 17, 2015 So since it ran great I'm assuming before the valve check, why go through all this and not take it back to said mechanic who obviously screwed up somehow, especially after spending...what $7-800 dollars, atleast that's what they want here in Cali. Good luck It was a valve check only, no fluids/plugs/filters. I planned on doing all of that myself once I had it back. When was the last time you had the plugs changed? I to, have never seen anything like it I havent since I owned the bike, but with FSH up to the last 4k I assumed ok when I bought it. I had another set of plugs to put in, which I planned to do once I had it back from the valve check, at the same time as fitting a power commander and sorting a few other issues out. In the cylinder I found a coiled piece of metal, the same pitch as the thread on the plug. Presumably a failed helicoil Link to comment Share on other sites More sharing options...
Sweeper Posted January 17, 2015 Share Posted January 17, 2015 Really stinks that you're sort of stuck with a "who done it". Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Alhazred Posted January 18, 2015 Share Posted January 18, 2015 It looks like the electrode and insulator came off inside the cylinder,that plug look REALLY old too. When I got my VFR I found the plugs not even finger tight after a couple of tanks of bad mileage,I think it would have to be barely threaded to have something like that happen. Link to comment Share on other sites More sharing options...
Alhazred Posted January 18, 2015 Share Posted January 18, 2015 I would try to get my money back from that shop,pull the head and hope there was only bent valves in there.Then I would buy a good used head and take it somewhere else to get it put in or just replace the engine if there is piston damage. Link to comment Share on other sites More sharing options...
SuperBeef Posted January 18, 2015 Author Share Posted January 18, 2015 Really stinks that you're sort of stuck with a "who done it". Sent from my iPhone using Tapatalk Potentially the helicoil has been disturbed when the plug was removed and then it hasn't seated back down. It looks like the electrode and insulator came off inside the cylinder,that plug look REALLY old too. When I got my VFR I found the plugs not even finger tight after a couple of tanks of bad mileage,I think it would have to be barely threaded to have something like that happen. I'm going to go in and speak with them in the week. Looking at the plugs the washer is corroded and can't imagine it forming a good seal. What stopped me changing the plugs sooner was waiting for an air filter and power commander to turn up. The plan was to get it all done in one hit. It a difficult to say whose fault it is, garage for not putting the plugs in properly or myself for not changing them. That said I'm not really sure why they put them back in and didn't say anything. Ill see what happens Monday and go from there Link to comment Share on other sites More sharing options...
Member Contributer Switchblade Posted January 18, 2015 Member Contributer Share Posted January 18, 2015 Good luck ... Link to comment Share on other sites More sharing options...
Member Contributer Dutchy Posted January 18, 2015 Member Contributer Share Posted January 18, 2015 Hey Look, my picture doesn't take up the whole page!!! You are right, "only" about a third..... still way too big... Link to comment Share on other sites More sharing options...
SuperBeef Posted January 24, 2015 Author Share Posted January 24, 2015 Can anyone tell me if the rear head can be removed without dropping the engine? Service manual says it has to be dropped but curious if anyone has done it without? Link to comment Share on other sites More sharing options...
fabio222 Posted January 24, 2015 Share Posted January 24, 2015 No idea sorry fella. My commiserations on your troubles, it looks really unusual! Link to comment Share on other sites More sharing options...
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