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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Decomp solenoid /cgi-bin/YaBB.pl?num=1222291605 Message started by YonuhAdisi on 09/24/08 at 14:26:43 |
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Title: Decomp solenoid Post by YonuhAdisi on 09/24/08 at 14:26:43 Got a slight problem, I do believe my decomp solenoid has gone out. I believe it has been out for several days if not weeks. The bike turns over and fires up every time. I just checked it, I watched the decomp while I cranked it over and it does nothing even though the FireLizard fires right up. What kind of damage if any can I do if I run it like that because I do not have the money to replace it. |
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Title: Re: Decomp solenoid Post by DJM on 09/24/08 at 14:54:48 From what I understand, all it does it make it easier for the starter to crank the engine. It would take more juice from the battery, so it would run it down sooner. If the bike is starting OK I wouldn't worry about it too much. But, I would fix it because I wouldn't want to get stranded if my battery was a little weak. You said it still starts, but does it seem to be cranking slower or taking longer than usual? |
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Title: Re: Decomp solenoid Post by justin_o_guy2 on 09/24/08 at 14:55:03 Where were you looking? I think it needs it, to protect the starter. Might not BE the solenoid, might be the timer, under the seat, or a wire. |
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Title: Re: Decomp solenoid Post by DJM on 09/24/08 at 15:04:43 You might also try disconnecting the cable from the solenoid to the engine, to see if maybe the cable is binding, or something is jammed up in the engine. If solenoid still doesn't move, see if it is getting any volts from the timer. |
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Title: Re: Decomp solenoid Post by EssForty on 09/24/08 at 15:14:41 My understanding of the way the system works is that it basically vents the exhaust valve briefly to decompress the cylinder and make it easier to start. If the solenoid is not activating, but FireLizard cranks up anyway then you should not expect any damage due to the lack of venting. Worst case is that it might not turn over sometime if your battery is weak and the piston is sitting at TDC when you try to start it. A problem could exist if the ADS failure somehow kept your exhaust valve open a smidge, but I'm not sure if that is possible. You might get severe afterfiring as hot combustion gases escape the cylinder before the exhaust valve would normally open. If you have the proper freeplay in the ADS shaft and if the spring is returning things to the normal setting I would think you're OK. Perhaps some of the experts can tell you more. Just my best guesses! |
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Title: Re: Decomp solenoid Post by justin_o_guy2 on 09/24/08 at 15:18:15 it doesnt hold open long at all. Put a hand on the cable & pop the start button. Or stand by the bike & watch it when the thumb touches the button. |
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Title: Re: Decomp solenoid Post by YonuhAdisi on 09/24/08 at 15:25:57 7F6066617C7B4A7A4A72606C27150 wrote:
That is exactly what I have done. I was watching the solenoid cable as I hit the starter button, there was no movement what so ever but the FireLizard fired right up. At times she does seem a little hard to get over the first crank then it fires right up, but most times it just comes to life without a problem. |
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Title: Re: Decomp solenoid Post by justin_o_guy2 on 09/24/08 at 17:07:51 Well, thats a bummer. If it was mine, I would fix it, cuz I think its about the starter gears more than battery. Maybe someone will say"leave it be".. |
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Title: Re: Decomp solenoid Post by verslagen1 on 09/24/08 at 17:29:49 The solenoid is a big electro magnet. And it has to be fairly close for it to pull in. Is there a lot of slack in the cable? should be. take the tank off and you'll need a fast acting analog VM. or hook the leads to the horn, I've never tried it but you should get a beep. It's only on for 1/2 a second, so keep you eyes open. |
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Title: Re: Decomp solenoid Post by YonuhAdisi on 09/24/08 at 18:02:19 Slight problem with that test. My horn went out on me months ago and I don't have a VM of any kind. All I want to know at the moment is will I cause any irreparable damage by running with out the decomp? The FireLizard is my main source of transportation at the moment and may be getting a job soon (I really hope so) that will be about a 40 mile round trip. |
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Title: Re: Decomp solenoid Post by T Mack 1 on 09/25/08 at 12:44:12 Damage will be wearing out the starter since it will have to work much harder. Did you put a finger on the body of the decomp press. Solenoid to feel the click when youstart the bike??? Also, have you adjusted the calbe lately?? Did you do anything when you changed to the monster tank?? |
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Title: Re: Decomp solenoid Post by YonuhAdisi on 09/25/08 at 14:04:28 166F0F23212973420 wrote:
So, basically as soon as I get up enough money I need to replace it before my starter burns up because of the extra work. Quote:
No, I just watched the decomp cable and noticed nothing at all happening when I hit the starter button except the bike firing up without a problem. Quote:
I haven't adjusted the cable recently, and it was working perfectly fine with the "monster tank" (I actually like that description :) ) until just recently. |
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Title: Re: Decomp solenoid Post by DJM on 09/25/08 at 14:11:21 Before you buy a replacement, make sure it is bad. Could be a loose or dirty connector, broken wire, or even something binding in the cable to the engine. Maybe some gunk built up in the solenoid itself that could be cleaned with a solvent. |
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Title: Re: Decomp solenoid Post by YonuhAdisi on 09/25/08 at 14:13:58 Good idea, and I just remembered something. The other day I took apart the switch housing trying to figure out how to put on a throttle lock, (didn't work, so I returned the lock) could I have pinched a wire or something inside the housing that activates the solenoid when I put it back together? |
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Title: Re: Decomp solenoid Post by justin_o_guy2 on 09/25/08 at 19:27:08 You could hold it by hand, hit the starter & let go. |
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Title: Re: Decomp solenoid Post by YonuhAdisi on 09/25/08 at 21:07:05 I guess I could always turn it into manual. |
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Title: Re: Decomp solenoid Post by justin_o_guy2 on 09/25/08 at 21:27:17 Yep, unload some wiring & that solenoid & just leave a piece of the cable, make a loop, or run it loose up to something on the frame, just the cable, no housing, & grab it & shove it one way or the other, so gloved hands can handle it easy. |
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Title: Re: Decomp solenoid Post by T Mack 1 on 09/26/08 at 03:07:02 The starter button sents power to the timer circuit. The timer controls power to the solenoid then after a fraction of a second to the starter motor. So, if the motor starts it's not the starter button. I think it may just be a loose connection.... but.... you may need to get your hands dirty and do some troubleshooting. |
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Title: Re: Decomp solenoid Post by justin_o_guy2 on 09/26/08 at 05:19:50 Timer is under the seat. Toward the front. |
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