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Old 10-27-2012, 04:50 PM   #21
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is it getting fuel, is the fuel pump priming
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Old 10-27-2012, 05:17 PM   #22
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Quote:
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is it getting fuel, is the fuel pump priming
The 2007 Ninja's don't have a fuel pump. How would I check if its getting fuel though without buying a clear hose.
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Old 10-27-2012, 05:47 PM   #23
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The 2007 Ninja's don't have a fuel pump. How would I check if its getting fuel though without buying a clear hose.
You can remove the fuel line to the carbs, turn the petcock to res. or to prime if it's vacuum operated and fuel shold run out of the petcock. As an after thought, the vent line maybe stopped up, open the fuel cap to let air into the tank and see if it starts.

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Old 10-27-2012, 05:48 PM   #24
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Quote:
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The 2007 Ninja's don't have a fuel pump. How would I check if its getting fuel though without buying a clear hose.
Use the starter fluid. If it starts with starter fluid and then dies then its not getting gas.
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Old 10-27-2012, 06:01 PM   #25
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Quote:
Originally Posted by bradtx View Post
You can remove the fuel line to the carbs, turn the petcock to res. or to prime if it's vacuum operated and fuel shold run out of the petcock. As an after thought, the vent line maybe stopped up, open the fuel cap to let air into the tank and see if it starts.

Brad
I did that but the fuel doesn't run until I hit the starter. Any ideas?
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Use the starter fluid. If it starts with starter fluid and then dies then its not getting gas.
I sprayed the starter fluid in the air filter and it didn't start. I also sprayed it into both spark plug openings and that also didn't work. I have no idea whats wrong.
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Old 10-28-2012, 06:01 AM   #26
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Interesting
Sounds like you have fuel and spark

The following are a bit of a stretch

1) Is the carb opening when you turn the throttle. Since you need air too.
2) Check compression.
3) Is the battery strong - I once started an old KZ900 by pulling 2 of the plugs, this let the engine crank faster

Well with Fuel + Air + Spark + Compression + All arriving at the right time it should run

I have also had bikes that were very difficult to start without the air cleaner - not part of you original problem, but could affect your trouble shooting.

It will be interesting to hear what it is when you figure it out.

Best of Luck
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Old 10-28-2012, 09:56 AM   #27
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Could it be totaly fluding out with too much fuel?
A float or needle and seat in the carb commig off could cause this
you would need to take the float bowls off to check.
If you get a real wet spark plug after cranking it could be too much fuel.

Just an after thought
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Old 10-28-2012, 08:52 PM   #28
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Quote:
Originally Posted by 1340HIGH View Post
Interesting
Sounds like you have fuel and spark

The following are a bit of a stretch

1) Is the carb opening when you turn the throttle. Since you need air too.
2) Check compression.
3) Is the battery strong - I once started an old KZ900 by pulling 2 of the plugs, this let the engine crank faster

Well with Fuel + Air + Spark + Compression + All arriving at the right time it should run

I have also had bikes that were very difficult to start without the air cleaner - not part of you original problem, but could affect your trouble shooting.

It will be interesting to hear what it is when you figure it out.

Best of Luck
How would I check if the carb is opening when I turn the throttle and how would I check the compression? The battery is strong I went to O'Really and charged it to full. Does anyone know a mechanic that travels? I need someone to come take a look find out what it is and give me a hand. I am willing to pay. Really want to ride
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Old 10-30-2012, 04:03 PM   #29
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If you are sure you have spark, at this point I would be looking at the cam chain. I don't know the engine, but if there's an easy way to verify that the cams are still spinning and that it didn't jump time, that's what I'd do. You can stick your finger up in the carb and feel the slide open and close as you work the throttle unless it's a CV carb. If it is a CV then they would both have to have gone south at the same time. That doesn't happen.
Even if you broke the cable and they weren't opening at all, it would still fire every now and then.
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Old 10-30-2012, 04:55 PM   #30
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you didn't put diesel in it did you?
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Old 10-30-2012, 05:10 PM   #31
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Quote:
Originally Posted by Sebadat View Post
I tried to but I can't get the bike up to second gear without it going to Neutral after first.
What?
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Old 10-30-2012, 06:26 PM   #32
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When things shut down very abruptly it is usually electric, but since you have spark that is likly not it
Can you pull the side cover off , that covers the rotor and pull the spark plugs
Based on the position of the rotor with respect to a fixed mark you can determine when the piton is at the top of the stoke, you can check it with a straw through the spark plug hole, make sure it is long enough not to fall in the engine should the piston be at the bottom.
Knowing this firmly place your finger over a spark plug hole and crank the engine.
You should feel significant pressure every OTHER time the piston is at the top.
If you feel nothing or if you feel it every time then you likely lost the Cam Chain, or broke the cam shaft.
If you feel it every OTHER time, Then consider pulling the float bowls and check if the floats are intact and moving the needle you get the idea when you take the bowl off CAREFUL they are delicate.
If this all checks out, then maybe the spark is occurring at the wrong time, not sure how this would happen since the rotor determines this I and is keyed to the crank. And if you have a throttle position sensor it should not be able to move the spark that much.

But again a very sharp abrupt engine stop , but still cranks is usually electric, unless you did loose the cam chain or break the cam shaft.

Besure you do have good gas, and air cleaner in place when trying to start.
I am surprised that with spark the engine starting fluid did nothing.

Perhaps Patrick at Motorcycles Unlimited may be able to advise.

I am kind of old scholl so if there is some new engine magic then I have no clue
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Old 10-31-2012, 07:25 AM   #33
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Sebadat, If you filled the tank and the engine died shortly thereafter it's either a blocked gas tank vent, like I mentioned earlier or bad gas. If it doesn't start with the fuel tank's cap open, syphon out the gas and replace with some from another source.

The fuel running out of the petcock when the engine is cranking means you have a vacuum operated petcock, it turns off (stops the flow) when the engine stops and turns on when the engine is running. Was the amount of fuel coming out of the opened petcock more than just a dribble?

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Old 10-31-2012, 02:57 PM   #34
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Quote:
Originally Posted by 1340HIGH View Post
When things shut down very abruptly it is usually electric, but since you have spark that is likly not it
Can you pull the side cover off , that covers the rotor and pull the spark plugs
Based on the position of the rotor with respect to a fixed mark you can determine when the piton is at the top of the stoke, you can check it with a straw through the spark plug hole, make sure it is long enough not to fall in the engine should the piston be at the bottom.
Knowing this firmly place your finger over a spark plug hole and crank the engine.
You should feel significant pressure every OTHER time the piston is at the top.
If you feel nothing or if you feel it every time then you likely lost the Cam Chain, or broke the cam shaft.
If you feel it every OTHER time, Then consider pulling the float bowls and check if the floats are intact and moving the needle you get the idea when you take the bowl off CAREFUL they are delicate.
If this all checks out, then maybe the spark is occurring at the wrong time, not sure how this would happen since the rotor determines this I and is keyed to the crank. And if you have a throttle position sensor it should not be able to move the spark that much.

But again a very sharp abrupt engine stop , but still cranks is usually electric, unless you did loose the cam chain or break the cam shaft.

Besure you do have good gas, and air cleaner in place when trying to start.
I am surprised that with spark the engine starting fluid did nothing.

Perhaps Patrick at Motorcycles Unlimited may be able to advise.

I am kind of old scholl so if there is some new engine magic then I have no clue
I will check the fuse and see if its not blown.
Quote:
Originally Posted by bradtx View Post
Sebadat, If you filled the tank and the engine died shortly thereafter it's either a blocked gas tank vent, like I mentioned earlier or bad gas. If it doesn't start with the fuel tank's cap open, syphon out the gas and replace with some from another source.

The fuel running out of the petcock when the engine is cranking means you have a vacuum operated petcock, it turns off (stops the flow) when the engine stops and turns on when the engine is running. Was the amount of fuel coming out of the opened petcock more than just a dribble?

Brad
Ill try it with the gas tank open, but the fuel coming out of the petcock while cranking up the engine was a flow rather then just a dribble.
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Old 11-03-2012, 09:41 AM   #35
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Well?
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Old 11-10-2012, 08:22 PM   #36
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A mechanic looked at it and said it was compression.
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Old 11-10-2012, 09:37 PM   #37
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Quote:
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A mechanic looked at it and said it was compression.
A broken cam chain is about the only item that will stall the engine suddenly and test low on compression that I can think of. Possible that the cam chain was not adjusted tightly enough and the cams are now out of time with each other. I suspect some damaged valves in either case.

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Old 11-10-2012, 09:39 PM   #38
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Quote:
Originally Posted by bradtx View Post
A broken cam chain is about the only item that will stall the engine suddenly and test low on compression that I can think of. Possible that the cam chain was not adjusted tightly enough and the cams are now out of time with each other. I suspect some damaged valves in either case.

Brad
Yeah at least 2 out of the 8 were damaged. I sold the bike but for future knowledge what causes this problem?
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Old 11-11-2012, 07:05 AM   #39
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Yeah at least 2 out of the 8 were damaged. I sold the bike but for future knowledge what causes this problem?
Fatigue of the cam chain itself or a failure of the automatic cam chain adjuster (I doubt the adjuster was manual). Usually associated with high milage, but either could fail at any time. That said, neither is usually a problem and can last for tens of thousands of miles.

Brad
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Old 11-11-2012, 09:42 PM   #40
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Dude its just prob. Bad gas. Flush the tank always use 89 and put new plug. Happen to me couple times already
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