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Old 10-11-2009, 10:09 PM   #1
agentjayjay
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ex500 in garage, now won't start

I left the bike in the garage, with the fuel switch set to off, so it wont gum up the carbs, and its been about 2 months. about maybe half a gallon left of gas. tried to start it today, the engine would turn over, but not start. i switched it to reserve, still no go. any ideas?
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Old 10-12-2009, 09:03 AM   #2
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Did you drain the carbs? They could have crud in the bowls. Is the battery fully charged?

Does that bike have a choke? Fiddled with it?

Anything build a nest in the airbox?

When in doubt start checking for spark, fuel and air.
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Old 10-12-2009, 09:37 AM   #3
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if you didnt drain the carb bowls OR run it dry after turning the fuel off you have gummed up carbs and need to clean them.
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Old 10-12-2009, 07:31 PM   #4
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um, how do you do that? (still a newb).
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Old 10-12-2009, 07:48 PM   #5
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Depending on where you are, check out the sponsors for the carb cleaning job.
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Old 10-12-2009, 08:33 PM   #6
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Quote:
Originally Posted by CaligoneTx View Post
Depending on where you are, check out the sponsors for the carb cleaning job.
+1
Have them cleaned by someone that knows what they are doing. If you don't, you will reinstall them,(they are a pain to remove and install), then your bike still won't run right. I've seen it a hundred times.
There is also the distinct possiblity that you will mess something up.
No offense, I was a Service Manager for a local bike shop, and I've seen this happen so many times it's almost funny.

In the future put Sta-Bil in your gas tank when it will be parked for more than 2 weeks or else drain the carb bowls after you shut off the gas.
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Old 10-12-2009, 10:36 PM   #7
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how would i get it to the shop? the family van is, well, a van. and how much does it cost to get it done?
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Old 10-12-2009, 10:38 PM   #8
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is there a howto guide (with lots of pictures)?
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Old 10-12-2009, 10:38 PM   #9
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my dad has a truck, but since my last crash, i don't think he would be very sympathetic...
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Old 10-12-2009, 10:39 PM   #10
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what side of town are you on....


Ive got 2 500r's sitting in my garage...

Ive done a carb job on one of em.
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Old 10-13-2009, 10:59 AM   #11
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There's a couple carb rebuild how-to's on Youtube. I beleive theres one for your bike iirc. It can be tricky if youve never done it before so having a experienced hand around may help. My next door neighbor rebuilt his by watching a few you tube vids and his bike runs great now.

I prefer a shop manual.
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Old 10-13-2009, 11:01 AM   #12
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i live very near myerland plaza. i have the service manual suppliment, but not the base manual.
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Old 10-13-2009, 04:52 PM   #13
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i heard someone putting some kind of carb cleaner in the gas tank and trying that. would that work?
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Old 10-13-2009, 05:32 PM   #14
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the problem is the needles and everything else already has gunk on them. They are clogged and nothing will clean it out; besides, if it would, would u want all that mess going through your engine too?

Its gotta come off.

Im a MasterTech at BMW and very familiar w electronics etc; Im managed to clean out a few but I failed on the last attempt at the katana.

Carbs are best left to the people fluent in them.
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Old 10-13-2009, 05:51 PM   #15
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Quote:
Originally Posted by CaligoneTx View Post
the problem is the needles and everything else already has gunk on them. They are clogged and nothing will clean it out; besides, if it would, would u want all that mess going through your engine too?

Its gotta come off.

Im a MasterTech at BMW and very familiar w electronics etc; Im managed to clean out a few but I failed on the last attempt at the katana.

Carbs are best left to the people fluent in them.
a HUGE +1 to that.
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Old 10-13-2009, 09:34 PM   #16
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Carbs are best left to mechanics, BUT if you are low on cash or just like to tinker with stuff i would say go for it. What's the harm in trying right? If you do it right you can save alot of money, But if you do it wrong you will have to take it and have it fixed and risk the possibility of having to buy another carb kit. if you do it and it wont start or acts weird DO NOT RIDE IT. i had a buddy do that and almost got ran off the road when his bike died doing 80 on the freeway. He's learned from it though and can rebuild a carb with the quickness. I would send u his way but he doesnt work on other peoples bikes.

Watch this video and a few others like it on youtube and if you feel confident i say go for it. You could learn alot and be able to help others and yourself down the road.


If you dont feel confident my vote goes to Motorcycles Unlimited on 1960. They are a sponsor here.
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Old 10-13-2009, 10:18 PM   #17
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you better get a good book on that carb. I rebuilt the mikuni's in my gs 500e then the ones in my gsxr1000. I went to the mikuni site. then to factory pro. and slowly learned every thing I needed. it took a while.
Before you blame the carbs.
roll it over with a little choke.
Does it fire at all.
pull the plugs. are they wet?
its only a two plug bike change them while they're out.
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Old 10-13-2009, 10:21 PM   #18
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As far as carbs and mechanics, If a man put it together a man can take it apart. I hate to keep saying factory pro but they seem to know moto carbs.
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Old 10-14-2009, 01:38 AM   #19
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+1 on cleaning out the carbs. My gf has an ex500 and she takes it out for at least 15 minutes every other week so her "carbs don't get gunked up". The only thing to prevent this if you're going to be away for awhile is draining the fuel out of the bowls before leaving the bike to sit, which shouldn't be too hard to do if you learn to clean the carbs yourself. My girl bought a shop manual and cleans hers when they're acting up, it's not really complicated if you have good instructions with pics. If you manage to clean them properly and it's still acting up (stalling and irregular idle and whatever), then try running some really high octane fuel through it. Hope this helps. Good luck!
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Old 10-14-2009, 08:11 AM   #20
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Quote:
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If you manage to clean them properly and it's still acting up (stalling and irregular idle and whatever), then try running some really high octane fuel through it.
do not do this. this is bad advice. ex500s are low compression engines that do not require high octane..
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