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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Archive through May 25, 2007 » Help!!! bike ran fine last night, but it wont run today??!! x1 1200 fuel injected.... « Previous Next »

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Dnchevyman
Posted on Monday, April 23, 2007 - 02:08 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

ok, i have a lightning with the 1200 fuel injected engine. i have spark, i have fuel. the bike is cranking fine. but it wont start for nothing. it will pop and just barely start then die. it wont even run for a full second. i rode it home last night, then this morning i went to leave and it wouldnt start??? anyone have any ideas? is there anything these bikes are notorious for going bad??? Theres no check engine light,
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Sparky
Posted on Monday, April 23, 2007 - 12:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

How long have you had the bike? When was the last time you checked the spark plugs or plug wires? If the plug wires have never been replaced, the insulation can break down and leak enough voltage to where it doesn't start dependably.

Is it possible the fuel is contaminated, especially if there is water in the gas?
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Dnchevyman
Posted on Monday, April 23, 2007 - 02:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have figured it out that its fuel related, i can hear the pump running, but the fuel pressure gauge is still reading zero?????

anyone ever heard of the fuel pump running but not creating any fuel pressure?????
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Sparky
Posted on Monday, April 23, 2007 - 02:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Could be something clogging the inlet to the pump (fuel filter) or the bypass valve (pressure regulator) is stuck open or, worst case, the pump shaft broke.
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Dnchevyman
Posted on Monday, April 23, 2007 - 03:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

if the regulator is on the end of the pump, and held in by two phillips screws, then i think thats my problem. i have the pump in a can of gas, and there is a lot of gas coming out of that.
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Mikej
Posted on Monday, April 23, 2007 - 06:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Probably not related, but on my 2000 M2 with the gravity fed carb, the little tube above the petcock somehow worked its way to the top of the screen and was starving the gas flow. I removed the petcock, cliped off a chunk of the inner tube, put the screen back on, and it has worked well ever since, plus I have a smaller reserve now but a bigger main tank volume.

If you have an inline fuel filter that might also be the problem, or a kink in the line somehow between the fuel pump and the injectors.

Probably no help but thought I'd throw this out there anyway.
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Sparky
Posted on Tuesday, April 24, 2007 - 12:16 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'm not too familiar with the X1 EFI, but if its fuel pump is anything like an XB, there is an inlet screen on one end of the pump, an outlet tube that goes into the regulator, a hose out of the regulator going to a fuel filter, and a hose from the filter going to the outlet fuel supply fitting. I'm thinking the X1 probably has a similar setup.

If you can plug the regulator with your finger, does gas come out of the supply fitting easily? This would indicate the filter is OK and the regulator is shot. But if it seems to take a lot of pressure and no gas comes out, then I'd say the filter is clogged.
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Littlefield
Posted on Tuesday, April 24, 2007 - 02:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

'i have the pump in a can of gas, and there is a lot of gas coming out of that.' Not sure I follow that. If you don't have the pump hooked up to the throttle body or something else to create back pressure it will not produce discharge pressure.
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Sparky
Posted on Tuesday, April 24, 2007 - 03:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

That's true. But I think he was saying gas was coming out of the regulator and not the outlet fitting. Unless I'm mistaken, the regulator should not open until approx 50 psi is attained in the outlet to the injectors.

So if the pump assy is all by itself, it should squirt gas out the outlet and not the regulator.
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Dnchevyman
Posted on Tuesday, April 24, 2007 - 04:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

correct sparky. it squirted out the outlet farther if i pushed the regulator into the housing, giving it a better seal, but not very good compared to what it should be.

if anyone has a entire fuel pump assy i will buy it from you......
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