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Old April 16th, 2012, 08:17 AM   #1
DCBenson
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Rain Drenched Bike Won't Start

OK guys. My bike got caught in the rain and now it won't start. Help me please. Here is what I have done:

1. Completely dried the entire bike.
2. Drained the tank and replaced with fresh gas.
3. Removed and cleaned carb.
4. Cleaned spark plugs.
5. Replace computer (from track bike)

I am getting compression and it turns over fine. It just won't start. I'm at wits end. I wanna ride. HELP!!!
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Old April 16th, 2012, 08:36 AM   #2
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Was it sitting in the rain or were you riding it? Have you checked inside the airbox / airfilter? Are both carb boots and vacuum hoses securely fitted?

Most Japanese motorcycle electrical connectors are open at the rear, letting in moisture that will collect on the male and female pins/sockets, causing a short, blowing a fuse or creating corrosion limiting current flow. Have you checked your connections?
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Old April 16th, 2012, 08:41 AM   #3
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It was sitting in the rain. New air filter and the box is clean and dry. Carb work should be tight. Pulled it twice and then replaced with the one from track bike. No blown fuses. Checked them all...even the horn. I have not checked all the connections for corrosion. Which ones would prevent it from starting? I have fuel and spark.
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Old April 16th, 2012, 09:59 AM   #4
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Replace the old computer and test
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Old April 16th, 2012, 10:41 AM   #5
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are you getting spark?
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Old April 16th, 2012, 10:47 AM   #6
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Did a lot of water get into the exhaust?
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Old April 16th, 2012, 11:59 AM   #7
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OK. Changed the computer already form the track bike...yes I'm getting spark, replaced exhaust with factory one from track bike. Nothing.
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Old April 16th, 2012, 01:11 PM   #8
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Quote:
Originally Posted by DCBenson View Post
....Which ones would prevent it from starting? I have fuel and spark.
Safety switches. (neutral, sidestand, shut off)
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Old April 16th, 2012, 02:48 PM   #9
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Safety switches. (neutral, sidestand, shut off)
Having spark rules out the safety switches.
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Old April 19th, 2012, 07:45 AM   #10
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C'mon. I wanna ride. Any more suggestions?
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Old April 19th, 2012, 01:12 PM   #11
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How much rain are you talking about?

I lived in a country where it rained on average 10 days every month, the bike was used to commute for 2 years so was parked outside for 8-10 hours a day rain or shine and it always started first go.

The rain shouldn't cause any problem
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Old April 19th, 2012, 01:15 PM   #12
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Put your bike in a plastic bag with white rice, the white rice will pull all the moisture out and it should start up like new again.
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Old April 19th, 2012, 03:27 PM   #13
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Put your bike in a plastic bag with white rice, the white rice will pull all the moisture out and it should start up like new again.
this is the only solution.

PS:

If the engine turns over, you have compression and spark, and it STILL won't start, and you have checked everything.... then you missed something.

Re-check all the electrical connections that could have been exposed, it is possible a short is stopping it from starting. Check that none of your hoses are clogged somehow.
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Old April 19th, 2012, 05:34 PM   #14
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Does it fire if you use some starting fluid???
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Old April 19th, 2012, 06:41 PM   #15
DCBenson
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Does it fire if you use some starting fluid???
It sputters but not consistently.
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Old April 19th, 2012, 06:42 PM   #16
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ok my bike was also drenched the same day as yours and would not start.

I followed this thread and found some more here and the interwebs and figured out what needed to be done.

Problem:
-Left bike in downpour for no reason (lazy note:wife said "told ya so")
-Bike tried to start first attempt then nothing
-would turn over and could hear and feel compression

The Fix (after checking other stuff)
-with tap turned to "on"
-drained BOTH carb bowls into little cup
-tried to start only to fill bowls
-drained bowls again
-tried to start....almost started
-time to drain tank
-drain bowls once again
-fill tank
-turn over till bowls fill and boom...

Its running great again

could have omitted a few steps there but was testing the "waters" HA

I guess I have a bad gas cap seal.
thats the only thing I can figure?

dunno if this'll help but good luck
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Old April 19th, 2012, 06:44 PM   #17
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this is the only solution.

PS:

If the engine turns over, you have compression and spark, and it STILL won't start, and you have checked everything.... then you missed something.

Re-check all the electrical connections that could have been exposed, it is possible a short is stopping it from starting. Check that none of your hoses are clogged somehow.
I've changesd the tank and just about every electrical connection with the track bike. Just tried to start the bike while in gear with the clutch depressed and it tried to roll forward.
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Old April 19th, 2012, 06:49 PM   #18
DCBenson
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It does but I've done everything there is to do with the gas and carb. Drained and then replaced. The carb on it has 125 miles on it. It like brand new.
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Old April 19th, 2012, 07:34 PM   #19
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Spark is good and bright?

Plug firing consistently? Not intermittent.
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Old April 20th, 2012, 04:05 AM   #20
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Un-clip all your electrical connections and blow them out with an air compressor, if you don't have an air compressor use your mouth

Good luck
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Old April 20th, 2012, 11:15 AM   #21
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I've changesd the tank and just about every electrical connection with the track bike. Just tried to start the bike while in gear with the clutch depressed and it tried to roll forward.
You tried to start your bike in gear with the clutch depressed and the bike tried to roll forward?

If the clutch is depressed that should not happen.
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Old April 23rd, 2012, 05:27 PM   #22
DCBenson
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You tried to start your bike in gear with the clutch depressed and the bike tried to roll forward?

If the clutch is depressed that should not happen.
Thats what I thought. What would cause that and would that problem prevent it from starting?
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Old April 23rd, 2012, 05:33 PM   #23
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Yes it could keep it from starting..........but if it is in neutral it rolls freely, correct?
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Old April 23rd, 2012, 05:44 PM   #24
DCBenson
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Yes it could keep it from starting..........but if it is in neutral it rolls freely, correct?
In nuetral it frolls freely. I put it in gear, pulled the clutch in and tried to start. It tried to roll. Still no start.
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Old April 23rd, 2012, 06:19 PM   #25
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The rolling thing could be as simple as clutch cable adjustment, I wouldn't worry about it right now. Get it firing in neutral then go from there.

The fact that it doesn't fire every time when using starting fluid sounds like intermittent spark to me. Are you just spaying some into the airbox? Better would be to remove airbox and spraying equal amount directly onto each carb......Both cylinders should fire every time like that.
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