Question about Honda VT 750 Shadow Aero Motorcycles

1 Answer

My Honda Shadow Aero 750 has fuel coming out of hole in bottom of petcock / tap when cranking engine and of course more when it is running. Is this the result of a bad petcock diaphram?

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  • chrishickey Aug 02, 2009

    Thanks for your reply. I noticed a bubble in the diaphram inside the petcock cover assembly. I replaced just the assembly and have no more gas leak.

  • chrishickey Mar 11, 2010

    My problem was the diaphram. Replacing just the diaphram and not the assembly saved me 80%.

    No more solutions necessary please.

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  • 188 Answers

Replace petcock assembly and any gasket to tank. Not an item you want to play around with too much because of risk of fire.

Posted on Jul 26, 2009

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1 Answer

Where can I buy a petcock for a 2005 Honda Shadow VT750 Aero


Hi, Anonymous the answer to this question is way above my pay grade for this situation, I would call or visit my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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1 Answer

2004 Honda VT 750 Shadow Aero stalls applying throttle


Hi, Anonymous and the usual suspects are:
1. Idle port, transfer ports, slow air jet clogged.
2. Idle adjusting screw set too low.
3. Air fuel mixture adjustment too lean.
4. Pilot/slow fuel jet clogged.
5. Faulty accelerator pump.
6. Float level too low.
7. Float bowl contaminated old fuel, water, dirt, rust, etc.
8. Carburetor bowl vent line clogged/blocked/pinched.
9. Fuel line to carburetor kinked or pinched.
10. Fuel filter clogged.
11. Intake manifold leak.
12. The gas cap is not venting properly or fuel tank venting system blocked.
13. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
14. Needle and seat stuck closed in the float bowl.
15. Multi carburetors not in sync.
16. Faulty fuel pump.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Apr 17, 2014 | 2004 Honda VT 750 Shadow Aero

1 Answer

Changing the gear oil ?


see this instruction. God bless you
    • 1
      Park the Honda Foreman on flat ground and leave the engine running for 5 minutes to allow the engine to warm up. Place the oil drain pan under the crank case drain plug. Turn the engine off.

    • 2
      Remove the drain plug from the under side of the crank case using the ratchet set. Allow the engine oil to drain into the oil pan. Replace the plug to the bottom of the crank case and tighten the plug using the ratchet set.


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    • 3
      Remove the small screw from the side of the crank case using the Allen wrench. Remove the cap labeled "OIL" from the top of the crank case. Insert the funnel into the hole where the oil cap was.

    • 4
      Pour Honda 4-stroke engine oil into the funnel until the oil starts to come out of the hole where the small screw was on the side of the crank case. Once the oil starts to come out of the hole, stop pouring and replace the screw. Remove the funnel and replace the oil cap to the top of the crank case.


Read more: http://www.ehow.com/how_6512146_change-oil-honda-foreman.html#ixzz2ZPlA2Cu0

Jul 18, 2013 | 2004 Honda VT 750 Shadow Aero

1 Answer

2007 Honda Shadow Spirit 750 carburetor overflow


Hi, James and the usual suspects are:
1. Damaged or restricted fuel tank venting system.
2. Loose float bowl screws.
3. Damaged float bowl o-ring.
4. improper fuel level in the float bowl.
5. Worn or dirty inlet valve or seat.
6. Damaged or leaking float assembly.
7. Particle contamination in inlet fitting cavity.
8. Damaged petcock diaphragm allowing fuel to flow through the vacuum line into the combustion chamber.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
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Jul 25, 2012 | 2007 Honda Shadow Spirit 750

1 Answer

2005 Honda VT 750 Shadow Aero engine turns over but will not start


Hi, Isaac and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. Fuel injectors stuck open.
13. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
14. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
15. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
16. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
17. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
18. Faulty neutral, clutch lever, or kickstand safety switch.
19. Faulty fuel pump or fuse or relay.
20. A stuck bent or burnt valve.
21. Tilt sensor needs a reset.
22. Security system not disarming alarm needs a reset.
23. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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May 05, 2012 | 2005 Honda VT 750 Shadow Aero

1 Answer

2004 Honda VT 750 Shadow Aero new petcock will not flow fuel


Hi, Hunter2010 how about a vacuum line for this scenario you will need your service, parts fiche, and owners manual if you can't find the best tool you ever bought for your Honda, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need for viewing and printing please click on the blue links below. Good luck and have a wonderful day.
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Jan 08, 2012 | 2004 Honda VT 750 Shadow Aero

1 Answer

I need to replace the o ring (petcock) on my 2004 honda shadow aero and need to know if i need to remove tank or maybe get special tool to remove petcock


Drain the tank. You should be able to remove the petcock by simply turning the nut holding it on or turning the whole petcock assembly. It may be stuck in place by the o-ring/fuel filter inserted into the tank. Be sure the filter is in place when you put the petcock back on or you will have problems with leaking gas out the carburetor overflows (from tank rust getting into the carburetors). Chances are the leaking gas is not form the tank sealing o-ring, but from the vacuum diaphragm assembly attached to the back of the petcock. Part # 5 on the microfiche.
http://www.bikebandit.com/houseofmotorcycles/2004-honda-vt750c-shadow-aero/o/m2881#sch407448

Sep 05, 2011 | 2004 Honda VT 750 Shadow Aero

1 Answer

I have a 2004 Honda vt750 Shadow Aero. It sat for a few months (all winter). I didn't put any fuel stabilizer in the tank, nor any seafoam. The motocycle starts rough, but when I twist the throttle it...


The carbs will need to come off and be cleaned. They are gummed up causing the stalling. The petcock will need to be replaced, it is not rebuildable

Apr 29, 2011 | 2004 Honda VT 750 Shadow Aero

1 Answer

Have a 2006 honda shadow 750 aero-not a VT-keeps blowing gas out to the air cleaner holding area and the needle valve has been replaced


It is always a good idea to always turn your gas off when not riding. This condition can happen with any bike, even new ones. Did you change your oil after it happened? After the engine has been flooded it is important to check the oil and change it if fouled with gas. If the oil reads higher than it should it is full of gas and will no longer lubricate your motor properly. If you have a vacuum operated fuel petcock and the vacuum diaphragm gets a hole in it, it can be the cause of the engine flooding with gas. Check the fuel petcock for damage and repair it with a K&L kit or a new assembly from Honda.

Jan 31, 2011 | Honda VT 750 Shadow Aero Motorcycles

2 Answers

2004 honda shadow 750 small hole at the bottom of the petcock valve is leaking fuel. Is it a small screw that fell out or a bad gasket, or?


Your petcock is vacuum operated. Gasoline leaking from the vent hole indicates that the vacuum diaphram is ruptured. A new petcock assembly is needed.

Nov 16, 2009 | 2004 Honda VT 750 Shadow Aero

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