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After a fairly long evening of troubleshooting and cleaning and meter readings, I'm out of ideas and strength.
82 GS850G, 41K, stock everything. OEM exhaust, airbox, carbs, NGK plugs cleaned, regapped and reinstalled. No known issues until right before my valve shim replacement, when it started to start rough. Usually my little silver bullet starts right up.
I was able to get it started, and it would run rough for a while, then clean up and purr after about 20 minutes. Now, it won't start at all.
I've pulled the carbs, they were spotless, as I suspected. I still cleaned up the jets and bowls and sprayed them down again. Hoses were inspected, and found to be clear and free of cracks. My boots are stellar, suprisingly so, actually. Airfilter and airbox were relatively clean, and I did remove the filter and clean it. I remembered to switch to prime on my petcock, and after about 30 minutes, I could only get the carbs to sneeze once. UGH.
Electrical. I suspect this is an electrical problem. My coils show around 5 ohms with no power to them. Stator shows levels under 2 ohms, thankfully. I've replaced a stator before and they just suck. I dropped the plugs next to the cylinder for a spark check. I certainly THOUGHT that the spark would have been MUCH more than I got, and more consistant. Seemed weak to me. I did 1 and 4, then 2 and 3, to mate up right with a coil check. Just seemed week, no real spark against the cylinder. I was expecting lightning results, I guess. I had to squint to see the sparks.
Battery. Tested it to 11.82 VDC after a few crank attempts, so close to right. It drops appropriately during crank. Resumes its' near 12VDC range after cranks. I checked fluids, and found a couple of low chambers. Refillled, on the charger right now.
So I guess I have to do a R/R check, for the correct ohm or VAC measurements....
I found that I must have the relay mod on my bike from the PO. the little osram relay that I've seen referenced with 87a.... Yeah, it's there, and a fuse holder with a 15 amp fuse in it that is good. Checked all the wiring, and all my fuses, all good in appearance. (still need to mieter for continuity, at least.) Dunno if this relay could be bad, or how to check it. I am capable, just not sure what to look for. This would definitely be an issue, from what I can tell.
I do have electronic ignition, and asked the stupid question about how to adjust it not too long ago, and am not certain as to what to look for in that area. I did have to work the crank while replacing my valve shims. Personally, I think that is coincidental, as the valve job was easy, and I did notice a big improvement in idle and throttle response initially.
So what have I missed? Other than the RR checks, what's left to check? I just put high octane in it this morning, as it would get me up to the station and back, but not all the way to work. It misses like an electrical miss. Not a bogging or starving issue like dirty or misaligned carbs would do. The idle will change wildly if I get it running, and will do this for quite some time, with or without choke. (some mornings it doesn't need much choke)
I dunno. I still have two months of good riding left, and my wallet says to keep riding. I've obviously missed something here, perhaps one of the learned folks here can offer an idea or two. Or three.
Thank goodness for beer. Hooray beer.
**update** checked battery charge..... 12.5 vdc. It's charging well.
loudest143
82 GS850G, 41K, stock everything. OEM exhaust, airbox, carbs, NGK plugs cleaned, regapped and reinstalled. No known issues until right before my valve shim replacement, when it started to start rough. Usually my little silver bullet starts right up.
I was able to get it started, and it would run rough for a while, then clean up and purr after about 20 minutes. Now, it won't start at all.
I've pulled the carbs, they were spotless, as I suspected. I still cleaned up the jets and bowls and sprayed them down again. Hoses were inspected, and found to be clear and free of cracks. My boots are stellar, suprisingly so, actually. Airfilter and airbox were relatively clean, and I did remove the filter and clean it. I remembered to switch to prime on my petcock, and after about 30 minutes, I could only get the carbs to sneeze once. UGH.
Electrical. I suspect this is an electrical problem. My coils show around 5 ohms with no power to them. Stator shows levels under 2 ohms, thankfully. I've replaced a stator before and they just suck. I dropped the plugs next to the cylinder for a spark check. I certainly THOUGHT that the spark would have been MUCH more than I got, and more consistant. Seemed weak to me. I did 1 and 4, then 2 and 3, to mate up right with a coil check. Just seemed week, no real spark against the cylinder. I was expecting lightning results, I guess. I had to squint to see the sparks.
Battery. Tested it to 11.82 VDC after a few crank attempts, so close to right. It drops appropriately during crank. Resumes its' near 12VDC range after cranks. I checked fluids, and found a couple of low chambers. Refillled, on the charger right now.
So I guess I have to do a R/R check, for the correct ohm or VAC measurements....
I found that I must have the relay mod on my bike from the PO. the little osram relay that I've seen referenced with 87a.... Yeah, it's there, and a fuse holder with a 15 amp fuse in it that is good. Checked all the wiring, and all my fuses, all good in appearance. (still need to mieter for continuity, at least.) Dunno if this relay could be bad, or how to check it. I am capable, just not sure what to look for. This would definitely be an issue, from what I can tell.
I do have electronic ignition, and asked the stupid question about how to adjust it not too long ago, and am not certain as to what to look for in that area. I did have to work the crank while replacing my valve shims. Personally, I think that is coincidental, as the valve job was easy, and I did notice a big improvement in idle and throttle response initially.
So what have I missed? Other than the RR checks, what's left to check? I just put high octane in it this morning, as it would get me up to the station and back, but not all the way to work. It misses like an electrical miss. Not a bogging or starving issue like dirty or misaligned carbs would do. The idle will change wildly if I get it running, and will do this for quite some time, with or without choke. (some mornings it doesn't need much choke)
I dunno. I still have two months of good riding left, and my wallet says to keep riding. I've obviously missed something here, perhaps one of the learned folks here can offer an idea or two. Or three.
Thank goodness for beer. Hooray beer.
**update** checked battery charge..... 12.5 vdc. It's charging well.
loudest143
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