Question about 2003 ATK 605

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Fuel line system 605

I added dave's fuel line upgrade kit with the valve for turning off the fuel. Now the only way it will start is if I turn the fuel off and start it

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Then turn it on when it starts to run out of gas. I believe the additional fuel is flooding it. How do I compensate for this problem? Since the injectors regulate the fuel flow to the motor it's not likely the fuel line update is causing your problem. Possibility of a manfunctioning injector IACV or air restriction on the intake side.,,,

Posted on Nov 10, 2008

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How do I diagnose a bad fuel pump.


When you turn on the ignition the pump should run for about ten seconds and then turn off. Next step would be to do a fuel pressure test.

FUEL PRESSURE TEST
The fuel pump delivers fuel to the fuel line, to a cavity in the induction module that supplies the fuel injectors and to the pressure regulator, where the system pressure is controlled. Excess fuel pressure is bypassed to the fuel tank through the pressure regulator. The fuel pump can be turned on by applying battery voltage to the fuel pump fuse.
Improper fuel system pressure may contribute to one of the following conditions: 1.Cranks, but won't run. 2. Cuts out (may feel like ignition problem). 3. Hesitation, loss of power or poor fuel economy.
TESTING
The fuel pressure gauge (0-100 PSI) allows for fuel injector and fuel system pressure diagnosis. For Harley-Davidson bikes special adapters allow the gauge to be attached to the external fuel supply line. Normally the fuel pump, fuel line and fuel rail are under high pressure (58 psi) so they should be purged by pulling the fuel pump fuse from the EFI fuse block, starting engine and allowing it to run until quits and then cranking it over for another few seconds. (Then if it is a Harley-Davidson motorcycle remove the fuel line from the quick connect and install a fuel line adapter in its place. THEN install a second adapter in series with the first one. THEN connect the fuel line to the second adapter.) Hook up your fuel pressure tester and then if your tester has a fuel valve and an air bleed line verify that they are closed. Then connect the fuel pressure gauge to the Schraeder valve on the adapter. Reinstall the fuel fuse, start and idle engine to pressurize the fuel system. Open the gauge fuel valve if it has one to allow fuel to reach the gauge. f the gauge has a relief valve and line open it slightly to bleed out any air in the line until no more air is visible. Catch the escaping fuel in a safe manner. Rev the engine a few times and read the pressure gauge. The pressure should be a STEADY 55 to 62 psi (380 to 425 kPa). Disconnect and remove the gauge and adapters in a safe manner as was used to connect it in the first place and return the system to an operational state.

FUEL INJECTED motorcycle engines will usuaally shut off the fuel injection if battery voltage is low, between 10 and 11 VDC.

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1 Answer

300 cc adly will not start....has gas, oil, ran great until my husband ran it with the gas "knob" off..he forgot to switch it in the "on" position...any help would be great! thnx.


Hi Anonymous, fill up fuel tank turn fuel valve to the on position spray starting fluid/ether into the air cleaner box and start engine, for more information about your question please visit the website below. Good luck and have a nice day. http://fullmanuals.com/brand/adly

Aug 24, 2013 | Adly Motorcycles

1 Answer

2006 FXD Fuel Supply Check Valve


Hi Anonymous, for more information on your question please visit the websites below and good luck:
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2006 yz yamaha


Hi Dave,
The reason is that your issue is combustion related. Something is wrong. Look for intake leaks, valve settings, valve timing, ignition timing and advance, correct fuel to each cylinder.
I suspect that this issue would not necessarily cause an engine overheat, but resolve the issue as you are a fire hazard and you will eventually damage the exhaust system and engine parts.

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2007 Q/R fuel pipe leak.


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1 Answer

2002 sportster with stage one kit is starting but then backfiring and turning off?


Hi Telesia78, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals,
ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust vale.
For a prime suspect please visit website below and good luck:
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1 Answer

There are 2 problems. 1) they bike is stalling when I let go of the throttle to up shift or down shift. As long as the throttle is open it runs fine. As soon as I let off it stalls. 2) It doesn't like to...


Hi Lfriesians, you may have to have your hot idle reset with a scanalizer, and the usual suspects are:
1. Severely discharged or damaged battery.
2. Loose, corroded or broken battery cable.
3. Alternator not charging or below normal rates.
4. Failed ignition coil, ignition/electronic module.
5. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor.
6. Faulty ignition switch.
7. Water or dirt in fuel system, carburetor or filter.
8. Fuel tank vent system plugged or gas cap not venting.
9. Fuel tank empty.
10. Fuel valve vacuum line broken or carburator vent line closed off.
11. Restricted, blocked or kinked fuel line.
12. Failed fuel pump, pressure regulator and or fuel injectors.
For a prime suspect please visit website below and good luck:
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1 Answer

Hi my xj650 has a hard time starting its like its not getting any gas but once i get it to start it will run only for a moment and then shut off


Hello,

It sounds like you have bad gas in your fuel system. If your bike sat for a while, you will need to drain, and clean, the carb bowl(s) (turn off the fuel valve before doing so), check the fuel filter for any blockage (replace if necessary), and then add Sta-bil to your fuel tank. This will stabilize the remaining fuel in your tank. With today's fuel having Ethanol added to it, the fuel gunk's up quicker.

Turn the fuel valve back on and start your bike - run a full tank through the fuel system. After a full tank is used, get a bottle of SeaFoam and add the recommended amount to your fuel tank when filling up. The SeaFoam will clean your fuel system and your bike will run better. Use Sta-bil when your bike is not going to be used for a while and use SeaFoam every other full tank - if you are not going to use a Premium fuel with no Ethanol added.

Hope this helps.

If you find this information useful, please vote on this post. Thank you.

Regards,

Oz

Jan 11, 2011 | 1982 Yamaha XJ 650

1 Answer

I added a bit of bad fuel in the tank


Hi and welcome to FixYa,

Initially, try to drain the carbs themselves. Each carb has a drain screw at the bottom specifically for this purpose. Just turning these drain screws a couple of turns counter-clockwise would allow the fuel inside the bowl to drain out through a hose. Normally, I do it with the tank's fuel valve open (PRI) so as to enable the gas to flow freely, the fresh gas to wash the inside of the bowl and prevent the float from sticking in the open position. In some instances that the the tank's fuel valve open is closed when doing this, the carb has a bad habit of overflowing. Of course care and safety should be in mind as raw fuel would tend to be draining out.

Good luck and Thank you for using FixYa. Happy Holidays.

Dec 15, 2008 | 1995 Honda VFR 400 R NC30

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