compression test
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| Won't start https://ukbeg.com/forum/viewtopic.php?f=8&t=23095 |
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| Author: | ribi [ 23 Apr 2018 13:16 ] |
| Post subject: | Won't start |
Hi guys I've got a strange problem.I was riding when it just stopped.I did a road side check fuses ok used and round did all the active tests ok.had some roadside asisitace from a mate with a rev and go this is 1 o'clock in the morning he pushed about 5 km s to my home..anyway I took plugs out sparks ok..disconnected the fuel line and test in a jug ok..I've never had a lot of pressure but it's always worked .,I thought I might just check,everything inside perfect no dirt,1 small O ring in a line of 3 was no good,changed all the seals and replaced. Pump,,took out injectors to test in the jug,,I don't know how much there supposed to spray but they did spray some thing,,still won't start ,,no back fire either,,I tossed some fuel down the throttle assuming it would at least fire or pop and bang,,nothing,,engine swings round freely no noises like broken engine parts,,it almost sounds like a broken cam belt !!! Any pointers very welcome thanks |
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| Author: | barney [ 24 Apr 2018 05:54 ] |
| Post subject: | Re: Won't start |
compression test
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| Author: | Nutah [ 24 Apr 2018 11:00 ] |
| Post subject: | Re: Won't start |
have you checked the wires around the ignition & headstock for breaks ? |
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| Author: | Bonzo [ 24 Apr 2018 11:48 ] |
| Post subject: | Re: Won't start |
Nutah wrote: have you checked the wires around the ignition & headstock for breaks ?  ..and coils. Admittedly I was on an S1, but was getting a spark when testing the plugs, but it wasn't actually sparking when they were in the cylinder heads.
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| Author: | ribi [ 24 Apr 2018 15:34 ] |
| Post subject: | Re: Won't start |
Thanks for replies,I had a harley guy listen to it he said New plugs.I'm miffed as I have a great spark with plug out he uses plugs from a honda cg 125 in his customer bikes with no problems ??I'll have a set in as soon as the shops open and let you know...it makes sense I put petrol down the throttle and nothing happens..take care and thanks |
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| Author: | deepsix [ 24 Apr 2018 17:29 ] |
| Post subject: | Re: Won't start |
I'd be surprised if it stopped suddenly without misfire or warning because of plugs 
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| Author: | barney [ 24 Apr 2018 20:10 ] |
| Post subject: | Re: Won't start |
ribi wrote: engine swings round freely no noises like broken engine parts,,it almost sounds like a broken cam belt !!! Any pointers very welcome thanks  compression test
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| Author: | ribi [ 25 Apr 2018 14:42 ] |
| Post subject: | Re: Won't start |
Ok so plugs didn't work!!it was the key way on the lucky hands slightly sheared so I flipped it over. Had to pull engine to release cams and check heads and valves all looks ok,will clean everything and re lap valves.wish me luck it's a dirty job lots of oil |
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