Yamaha WR250R Mega Thread - Page 1183

Nice_Rumble · 10-07-2010, 12:26 PM

Got gas?

GotMojo? · 10-07-2010, 12:26 PM

Quote:

Originally Posted by Krabill

It won't turn over if the kill switch isn't on.

Fuel pump is the only thing that has come up so far with failure to start issues. I mean, it could be a bunch of things, but the fuel pump is the only real "issue" I've heard about on any WRR not wanting to start.

When the fuel pump goes, will the bike turn over and just never start? That's exactly what mine is doing. I do hear the fuel pump when I turn the key. I've never had any issues starting it before.

Mine is a 2009 model with just over 2000 miles. I was hoping I was not a candidate for that fuel pump issue, but maybe that's what it is. Hmmmmm.

GotMojo? · 10-07-2010, 12:27 PM

Quote:

Originally Posted by Nice_Rumble

Got gas?

Full tank.

GotMojo? · 10-07-2010, 12:33 PM

About 1200 miles ago I did install an FMF Power Programmer. If one of the connections under the tank came lose, could that cause it to not start even though it's turning over? Maybe I need to take the seat and stuff off and go in there and make sure all those connections are OK, no?

bash3r · 10-07-2010, 12:51 PM

Quote:

Originally Posted by GotMojo?

You mean the red toggle button on the right side of the handlebars? I always leave that thing on and turn the bike off with the key. I did play around with that toggle though just to be sure.

Like I said, the bike turns over, but it won't start. I don't want to keep trying it over and over either.... I'm sure that could fry the starter or battery.

Yea.. me to.. I never use the kill switch. But one time I did go to start her up and no go.. just crankin.. not a "turn over" and thought "NO.. fuel pump!!!" then saw the kill switch had been engaged.. I think it was one of my boys.. 6,000 miles on mine and 1yr 1month old it's started every time but that one I just mentioned

Have there been reports of '09s having issues.. ? Not that it means it couldn't be a fuel pump issue.. but may make GotMojo feel better...

GotMojo? · 10-07-2010, 01:00 PM

Quote:

Originally Posted by bash3r

Yea.. me to.. I never use the kill switch. But one time I did go to start her up and no go.. just crankin.. not a "turn over" and thought "NO.. fuel pump!!!" then saw the kill switch had been engaged.. I think it was one of my boys.. 6,000 miles on mine and 1yr 1month old it's started every time but that one I just mentioned

Have there been reports of '09s having issues.. ? Not that it means it couldn't be a fuel pump issue.. but may make GotMojo feel better...

I thought only '08's had the fuel pump issue, but who knows. I'm gonna go make sure my FMF programmer didn't come loose or something. The rest of the bike is completely stock, so not sure what else to check. I'm just glad this happened in my driveway and not 100 miles from home. I would be fuming mad if my practically new bike wouldn't start and I had to have it trailered home.

Krabill · 10-07-2010, 01:02 PM

The starter won't turn over and the fuel pump won't "prime" if the kill switch is off.

GotMojo? · 10-07-2010, 01:23 PM

I just unhooked my FMF Power Programmer and hooked everything back up stock. Same thing. Bike turns over, but won't start.

Hmmmm. I guess I will leave the Power Programmer off and call the dealer to see what they say. I'm stumped. Bike started just fine yesterday and I haven't done anything to the bike, but now it won't fire up. I'm thinking its the fuel pump, only because I've read about several people with this problem.

Anybody know what my next step should be? Call the dealer?

Byrd45 · 10-07-2010, 01:42 PM

Hey there:

Had the same problem when I first got my WRX and did the FMF install. I thought it might be the dreaded fuel pump issue but installing a new spark plug did the trick and she fired right up and has been flawless all year. I'd give that a try as your first step...

Nice_Rumble · 10-07-2010, 01:50 PM

You say your fuel pump is priming the injector. Hmmm, mine would not prime at all when the pump crapped out. Sounds to me like your fuel pump is still good.

Bike is getting air? Don't have a rag stuffed in the airbox? A motor should fire if it's getting spark, fuel and air. I'm sure it's something simple.

BluePill · 10-07-2010, 01:52 PM

Quote:

Originally Posted by GotMojo?

Anybody know what my next step should be? Call the dealer?

No start diagnosis 101. Applies to all gasoline engines, either EFI or carb.

Engine needs 3 things to run: Compression, proper fuel mixture, properly timed spark.

If compression fails, it can usually be heard while cranking. Rather than the normal "uneven" sound made my the engine spinning faster then slower as it goes through the different cycles (About 5 to 10 times per second at cranking speed), you will hear a more even and faster cranking speed. This is because the starter is not "fighting" against the compression.

If there is a failure of ignition, the cylinder and spark plug will become fouled with wet fuel. If you remove the spark plug and it is wet with fuel, you probably have an ignition failure.

There are small and cheap "ignition testers" available at most auto stores. They are basically a modified spark plug with a larger than normal gap.

If you are comfortable removing the fuel tank and plug yourself, it would be the first step in diagnosis.

GotMojo? · 10-07-2010, 02:08 PM

Quote:

Originally Posted by Nice_Rumble

You say your fuel pump is priming the injector. Hmmm, mine would not prime at all when the pump crapped out. Sounds to me like your fuel pump is still good.

Bike is getting air? Don't have a rag stuffed in the airbox? A motor should fire if it's getting spark, fuel and air. I'm sure it's something simple.

Yea, when I turn the key, I can clearly hear the fuel pump and it sounds normal. I figured if the fuel pump was an issue then I wouldn't hear it at all.

Hopefully it is something simple. Airbox is clear. I guess I will try the spark plug and a few other things. Very odd. Bike started fine yesterday... sat in the garage all night... now won't start. Hmmmm.

Chromer · 10-07-2010, 02:08 PM

Mine didn't want to start once, it was cranking slowly. A couple minutes on the charger and it fired right up.

A tripped tip-over sensor will also cause a crank/no start condition. Cycle the key.

As mentioned, air, fuel, spark. You're missing one of these. Once you know which, diagnosis gets easier...

GotMojo? · 10-07-2010, 02:23 PM

Quote:

Originally Posted by Chromer

A tripped tip-over sensor will also cause a crank/no start condition. Cycle the key.

I might try the charger overnight.... can you explain what you mean by the above? What is "cycle the key" ?

bash3r · 10-07-2010, 03:06 PM

Quote:

Originally Posted by GotMojo?

I might try the charger overnight.... can you explain what you mean by the above? What is "cycle the key" ?

Turn the key off then back on. if you drop the bike and do this it will start right up. I see guys just trying to crank it over and over and over after they lay it down.. but if you just turn the key off then back on.. the pump primes and starts right up.

Krabill you are correct.. haha. kill switch on.. you got nothing.. I don't know what I was thinking.. it wasn't cranking over when I did this but it did freak me out for a second

10-07-2010, 12:26 PM	#17731
Nice_Rumble Beastly Adventurer Joined: Dec 2004 Location: New London, NH Oddometer: 2,009	Got gas? __________________ '13 KTM 500 EXC, '08 Yamaha WR250R, '08 Kawasaki KLR650 (Sold), '04 CRF250X (Sold) Member AMA, NETRA, MVTR, CCCOFVT Stealth is good! Noise annoys!

10-07-2010, 12:33 PM	#17734
GotMojo? Beastly Adventurer Joined: Oct 2004 Oddometer: 4,042	About 1200 miles ago I did install an FMF Power Programmer. If one of the connections under the tank came lose, could that cause it to not start even though it's turning over? Maybe I need to take the seat and stuff off and go in there and make sure all those connections are OK, no? __________________ My rides... 2009 Yamaha WR250X \| 2008 Yamaha WR250R \| 2013 Honda CRF250L \| 2009 Kawasaki Ninja 250R

10-07-2010, 01:02 PM	#17737
Krabill Beastly Adventurer Joined: Oct 2005 Location: Tulsa, OK Oddometer: 3,526	The starter won't turn over and the fuel pump won't "prime" if the kill switch is off. __________________ Loud Sucks! www.wrrdualsport.com www.designatedvaping.com <- for all your electronic cigarette needs

10-07-2010, 01:23 PM	#17738
GotMojo? Beastly Adventurer Joined: Oct 2004 Oddometer: 4,042	I just unhooked my FMF Power Programmer and hooked everything back up stock. Same thing. Bike turns over, but won't start. Hmmmm. I guess I will leave the Power Programmer off and call the dealer to see what they say. I'm stumped. Bike started just fine yesterday and I haven't done anything to the bike, but now it won't fire up. I'm thinking its the fuel pump, only because I've read about several people with this problem. Anybody know what my next step should be? Call the dealer? __________________ My rides... 2009 Yamaha WR250X \| 2008 Yamaha WR250R \| 2013 Honda CRF250L \| 2009 Kawasaki Ninja 250R

10-07-2010, 01:42 PM	#17739
Byrd45 Adventurer Joined: Jun 2006 Location: Canada, Great White North Oddometer: 34	Try swapping plugs Hey there: Had the same problem when I first got my WRX and did the FMF install. I thought it might be the dreaded fuel pump issue but installing a new spark plug did the trick and she fired right up and has been flawless all year. I'd give that a try as your first step...

10-07-2010, 01:50 PM	#17740
Nice_Rumble Beastly Adventurer Joined: Dec 2004 Location: New London, NH Oddometer: 2,009	You say your fuel pump is priming the injector. Hmmm, mine would not prime at all when the pump crapped out. Sounds to me like your fuel pump is still good. Bike is getting air? Don't have a rag stuffed in the airbox? A motor should fire if it's getting spark, fuel and air. I'm sure it's something simple. __________________ '13 KTM 500 EXC, '08 Yamaha WR250R, '08 Kawasaki KLR650 (Sold), '04 CRF250X (Sold) Member AMA, NETRA, MVTR, CCCOFVT Stealth is good! Noise annoys!

10-07-2010, 02:08 PM	#17743
Chromer Not going gentle Joined: Jun 2007 Location: Into that good night Oddometer: 880	Mine didn't want to start once, it was cranking slowly. A couple minutes on the charger and it fired right up. A tripped tip-over sensor will also cause a crank/no start condition. Cycle the key. As mentioned, air, fuel, spark. You're missing one of these. Once you know which, diagnosis gets easier... __________________ Rage, rage against the dying of the light.

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