Question about 2004 Honda VT 750 Shadow Aero

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1993 Honda Nighthawk Stalls w/out choke on

My 750 Knighthawk does'nt seem to want to run this season. Starts everytime but when i touch the throttle or try to shut the choke off the bike stalls. I've had the bike for 15 yearswith no previous. Any advice out there ?

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  • 86 Answers

Make certain it has compression and has spark and is getting plenty of fuel and the air filter is clean. clean carbs air filter and fuel filter and new plugs.

Posted on May 27, 2009

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1992 Honda CB 750 Nighthawk motor runs at idle only with choke on


Hi, Anonymous and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
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.
http://www.fireblades.org/forums/honda-cruisers/81620-91-nighthawk-750-fuel-problem.html
77 CB750 only runs with choke won take any throttle
Honda CB750f2 Manual
http://www.partsfish.com/page/oem-parts-for-honda
Honda CB750F2 Owner Manual

Feb 11, 2014 | 1992 Honda CB 750 Nighthawk

1 Answer

1997 Honda CB 750 Nighthawk stalls out when you give it gas.


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.
Starts choke but dies with little throttle
Bike idles perfect but dies when given the slightest amount of throttle 93...
Honda CB750F2 Owner Manual
http://www.partsfish.com/page/oem-parts-for-honda
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Dec 02, 2012 | 1997 Honda CB 750 Nighthawk

1 Answer

My 1996 VF 750 C Magna starts fine with the choke open. After a minute or so as I reduce the choke and try to open the throttle, the engine just stalls out. Cannot seem to get the throttle to control


I think you are mixed up. The choke is usually closed to start a cold engine and opened once the motor warms up. The choke is closed to restrict the air flow and make the mixture richer in fuel. You can't open a choke that's already open. It's stalling because it's starved of fuel. Either a blockage or the fuel pump is not supplying enough gas.

May 06, 2012 | 1996 Honda VF 750 C Magna

2 Answers

1993 honda nighthawk 750 tach. not working


i have found in the past its the cable not the tacho

Jul 31, 2010 | 1993 Honda CB 750 Nighthawk

1 Answer

My 1993 Honda Knighthawk wont run.


The slow circuit of your carbs are dirty. you need to remove the carbs from the bike and thoroughly clean the internal passageways and jets. that should solve the problem. Always drain your carbs for storage and use fresh gas when you start up after long storage.

May 15, 2010 | 1993 Honda CB 750 Nighthawk

1 Answer

Even after warm up with choke on it has hesitation on acceleration my 1993 honda 750 ,if i leave the choke lever at about 1/4 on it makes it a little more ridable . it ideiles fine


Usually if it runs better with the choke on that is a sign that the fuel mixture is too lean. When you engage the choke, it allows less air into the fuel mixure correcting the fuel mixture. If you have made no changes to the intake or exhaust system chances are your carburators are gunked up a little and not letting enough fuel through.

Oct 06, 2009 | 1993 Honda CB 750 Nighthawk

2 Answers

2004 Honda Shadow Aero stalls


sounds like bad fuel try adding some fuel stabilizer.

Jul 19, 2009 | 2004 Honda VT 750 Shadow Aero

1 Answer

Honda 750 stalls if throttle is opened unless choke is on.


Hmm , sounds like a vacuum leak, check all the hoses, and the rubber intake manifolds and clamps

Jun 18, 2009 | 1992 Honda CB 750 Nighthawk

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