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Brokengq
| Posted on Saturday, June 14, 2014 - 12:11 am: |
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Could high humidity cause hard cold starts? The humidity here has been ~80-90% the past few days with temps in the high 80's low 90's. Lately my R has had a hard time starting cold. Usually takes 2 tries and a little wristing the throttle. The bike just turns over and over with a few small backfires out of the exhaust. If I release the starter and try again is spurs to life like it never even happened. Clean the IAC maybe? Hot starts don't seem to be a problem. |
Captjoe
| Posted on Saturday, June 14, 2014 - 07:16 am: |
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Sounds like a summer in Toronto. However, mine has never had a problem starting under similar temps and humidity. Almost sounds like the mixture maybe a little too rich for the conditions? (Message edited by captjoe on June 14, 2014) |
D_adams
| Posted on Saturday, June 14, 2014 - 07:28 am: |
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It's a fuel injected motor, twisting the throttle really doesn't do anything for it like it would have on a carbureted motor. There's no accelerator pump or enrichening circuit to dump additional fuel in, so in reality, it's leaning it out most likely. Personally, I'd try changing the plugs first. If you haven't cleaned the IAC it would be worth doing. Beyond that, when was the last time the valves were checked/adjusted? |
Brokengq
| Posted on Saturday, June 14, 2014 - 11:35 am: |
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Valves were checked/adjusted about 500 miles ago. The ones that were out of spec I shimmed back in, however there were a couple of valves on the tight side but still in spec that I didn't shim due to Harleys lack of inventory. My plan for that is to reinspect/readjust this winter. However I was a good little boy and changed the plugs while I was in there. |
Cataract2
| Posted on Saturday, June 14, 2014 - 11:49 am: |
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Well, for the future I recommend getting the Hotcam shim kit for the 1125. http://www.jcmotors.com/hot-cams-valve-shim-kits-1 0mm-31903-p Just allows you to ensure you can do them whenever you are in there without depending on HD for them. Crazy they didn't have them. Sucks for even the VROD owners of that area. |
Brokengq
| Posted on Saturday, June 14, 2014 - 12:51 pm: |
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Thanks. I was actually planning on getting that kit. Funds were tight when I did the inspection as I had just bought the bike the week before haha. I wasn't going to ride it without a valve inspection first. Here's something weird though. It rained like crazy last night, so the humidity is gone today. Bike fired right up. Here's a crazy thought, and let me know if it is even feasible. With the air being so hot and wet during the day when I ride, the IAC hose sucks in the wet air. When I stop the bike for the night the heat from the bike evaporates the air up into the air box. When it cools off at night the air condenses onto the IAC valve, when then gets an erroneous reading on start up. Is that crazy? I feel like that's crazy. |
Pmjolly
| Posted on Saturday, June 14, 2014 - 01:50 pm: |
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Mine has done it at different times, cold or hot. It's done it since I got it in early '09. Sometimes, it will just crank over and backfire once. It always starts right after that. Sometimes it will fire up on the first try. It's the nature of the beast. I don't consider it a problem unless it takes three tries to start it. |
Pmjolly
| Posted on Saturday, June 14, 2014 - 01:51 pm: |
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BTW, my 1190RX shares some of the same traits. Haha. |
Brokengq
| Posted on Saturday, June 14, 2014 - 04:29 pm: |
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Nobody likes a bragger pmjolly |
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