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| H1D not running on middle cylinder http://www.kawi2strokes.com/forum/viewtopic.php?f=14&t=12530 |
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| Author: | Jim [ Wed May 17, 2017 11:23 am ] |
| Post subject: | Re: H1D not running on middle cylinder |
No need to check for the strength of spark. Your new CDI unit was thoroughly tested. It really does look like something about that piston and/or cylinder has a problem. |
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| Author: | Pecka [ Wed May 17, 2017 11:38 am ] |
| Post subject: | Re: H1D not running on middle cylinder |
Jim wrote: No need to check for the strength of spark. Your new CDI unit was thoroughly tested. It really does look like something about that piston and/or cylinder has a problem. Yes I was tempted to pull off the cylinder head and cylinder and look but let it be for the moment, because I'm not sure I would see any clues?. It did pass the compression test over the rings. |
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| Author: | Ja-Moo [ Wed May 17, 2017 12:01 pm ] |
| Post subject: | Re: H1D not running on middle cylinder |
It might have been suggested before, but stick your hand over the carb closing it off when she is running, to see if there are pressure pulses. |
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| Author: | mraxl [ Wed May 17, 2017 12:03 pm ] |
| Post subject: | Re: H1D not running on middle cylinder |
You might want to check for clogged exhaust. |
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| Author: | Pecka [ Wed May 17, 2017 12:47 pm ] |
| Post subject: | Re: H1D not running on middle cylinder |
Ja-Moo wrote: It might have been suggested before, but stick your hand over the carb closing it off when she is running, to see if there are pressure pulses. If theres no pulses what would be the most likely cause? I can try to clean out the exhaust pipe with petrol based degreaser maybe. |
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| Author: | Ja-Moo [ Wed May 17, 2017 12:58 pm ] |
| Post subject: | Re: H1D not running on middle cylinder |
leaking seals. |
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| Author: | Pecka [ Thu May 18, 2017 1:47 am ] |
| Post subject: | Re: H1D not running on middle cylinder |
Ja-Moo wrote: leaking seals. And it could be any seal, or are some more likely? I have access to an STE Synchrometer I can try to put on the carb. |
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| Author: | Ja-Moo [ Thu May 18, 2017 2:05 am ] |
| Post subject: | Re: H1D not running on middle cylinder |
Give it a try, it would have to be a comparative against the other cylinders. Or you can use your hand.....  If you are not getting a good pulse, then it could be any adjoining seal. And, maybe a clogged pipe. you can always pull it and fire her up. just don't run it long if the middle cylinder comes alive.
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| Author: | triple cranks [ Thu May 18, 2017 8:51 am ] |
| Post subject: | Re: H1D not running on middle cylinder |
Pecka wrote: Jim wrote: So you mean you now have good spark on all three cylinders, but it's still not firing on all three? Is the problem still just the middle cylinder? I have spark with the plugs laying on the cylinder heads. Could cut off the electrode on an old plug and see if it jumps, as suggested earlier in the thread? Case and point. Replacing with one of Jim's boxes is certainly peace of mind, but not properly diagnosing from the get go causes you to chase your tail and throw away good money. If you had checked for good spark as suggested earlier, you could have saved a lot of time and money.
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| Author: | Ja-Moo [ Thu May 18, 2017 10:10 am ] |
| Post subject: | Re: H1D not running on middle cylinder |
In the last few years, the CDI's seem to be failing faster than the dopers in high school. I always recommend getting Jim's boxes now just out of course of action. As we pretty much know, the stock boxes will most likely be failing soon. |
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