Question about 1999 Honda VT 1100 C Shadow Spirit

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1995 honda shadow ace, overall runs great, but at certain times while under heavy load, like riding into the wind at highway speeds it will heat up and temp light comes on. if i pull to shoulder and reduce speed the light will go out, and i can run again for a short period. once i am back to street speeds or the wind is gone it runs fine. we can during good weather load up the wife and hit the highway with no issues. coolant levels are full, and electric fan runs as it should. is this normal or is there something else i need to look at?

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Could be several things
1-- coolant radiator is partially blocked or the thermostat is not fully opening reducing the flow of coolant through the radiator
2--- tuning is too lean at full load which causes overheat conditions for the engine
3--- timing a bit retarded for the rpms
i t is all connected to the extra load from the head winds requiring extra throttle that you would not normally use in normal conditions
another place to check is the fairing in use as the extra wind speed from the bike and the head wind may be causing a turbulence around the radiator and so preventing full air flow to the radiator

Posted on May 06, 2017


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Posted on Jan 02, 2017

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SOURCE: 98 Honda Valkyrie Tourer, engine stalls

Check vacuum line from #6 intake runner (port side rear cylinder) to the fuel petcock valve. The valve is vacuum operated for safety. It cuts off fuel to the carbs when the engine is shutdown. Hose could be cracked or diaphram in valve is cracked. Easy to inspect the valve.

Posted on Jun 07, 2009

SOURCE: Honda shadow ACE 750 dies on idle after warmed up

I guess you will have to reset the air-mixture screws of the carburator/s.
Not bad if you check the condition of the spark plugs...if its ..'Whitish' means lean i.e. less gas in, Brownish...means ok, 'Blackish'...means too much gas in .....'rich'
In your bike's case you may find it 'whitish'.
Hope this helps !

Posted on Jul 19, 2009

  • 6 Answers


It sounds like you may have or will be jetting your carbs. I did this using the directions with the kit and used the Clyman manual for this bike to show me step by step how to remove the carborator. You will only need to attach 2 of the 4 hoses on your carb. syncronizer. If I remember right, you need to remove the bolt-on cooling fins to expose the engine block. The is a black screw or bolt that you take out and screw the threaded metal adapter of the sync tool. Be careful using the sync tool. Be very light on the throttle or the vacuum in the cylinder will **** in the mercury from the sync tool - not good. The problem you are stating on idle & backing off sometimes happens when the carbs are running rich (too much fuel) Hope that gets you in the right direction.

Posted on Oct 03, 2009

  • 345 Answers

SOURCE: 1998 honda shadow ace running light not working

change the light bulb, and / or check your fuses

Posted on May 26, 2010

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Honda Shadow Ace overheating

Hi, Anonymous and the usual suspects are:
1. Low coolant level.
2. Restricted radiator air flow.
3. Faulty thermostat.
4. Coolant pump or fans inoperative.
5. Vent hose crimped.
6. Air in the coolant and needs bleeding.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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I have a 2004 Honda VT1100 Shadow Spirit, it runs OK until i have to climb a hill or put the engine under more load it has 18,000 miles any ideas?

um u may be right with starving for fuel thts wat it may seem like but it culd be your spark loosing power due to lack of power id replace ur spark plug

Mar 27, 2013 | 2004 Honda VT 1100 C Shadow Spirit

1 Answer


Hi, Anonymous the following tips are low cost easy to apply/install and guaranteed to give you better gas mileage and a smoother running bike. The average motorcycle gets 35-40 MPG. saving .2 gallon of gas could save you a 6-mile walk. 125cc scooters have been known to get 115 plus MPG
1. Proper tire inflation as per MFG. specifications wheels should be balanced and spokes tight.
2. Oil and coolant levels maintained at full marks, low levels produce excessive heat that causes the engine to work harder and reduces efficiency.
3. Keep extra weight to a minimum.
4. Take off from a dead stop should be smooth and easy throttle applied avoid excessive throttle snaps.
5. Smaller windshields get better MPH than large ones, wind resistance increases as a square of the speed at which you're traveling. For example, at 70 mph, wind resistance is double what it is at 50 mph (70 squared is almost twice as much as 50 squared). That will dramatically reduce your mileage. Keep that in mind while biking.
6. Keep idle time to a bare minimum or turn off the engine.
7. Re-jet carburetor with a smaller main and mid-range jet.
8. Keep chain/belt properly adjusted.
9. Avoid quick braking, hasty acceleration, high-speed driving, try driving the speed limit and keep a constant speed.
10. On long trips use freeways or flat straight stretches of highways rather than city or rural routes avoid hills and mountains when possible.
11. Keep your engine clean, dirt and grease/oil hold in heat.
12. A full-face helmet is more aerodynamic than other types of helmets. Any other clothing that decreases your aerodynamic should be reconsidered.
13. Any unnecessary bling on your bike is going to decrease fuel efficiency.
14. Use high-quality fuel using low-quality fuel can cause sludge in your fuel injectors.
15. Keep warm up time to a minimum get off the choke ASAP.
16. Motorcycles run best when their engines are maintained, and that includes making sure the air filter is clean, the spark plugs are fresh, the fuel filter is free, and the timing/valves are adjusted.
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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1 - There are many possible variables here, such as added accessories, load, road, wind, etc., but the strictly stock bike will probably be the least stressed at 45 to 55 mph in 5th gear, although this engine is so understressed by design, that riding as fast as it will go is not likely to cause any damage.

2 - The ACE 750 has a loyal following of fans, and you can find them on the web by googling "honda 750 ace"; they know what works and what doesn't, and are more than willing to help.

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Honda shadow ACE 750 dies on idle after warmed up and choke returns. Cleaded carbs no change. Never had a problem with the bike since 2002. problem started after about 2 months without riding. Checked in...

I guess you will have to reset the air-mixture screws of the carburator/s.
Not bad if you check the condition of the spark plugs...if its ..'Whitish' means lean i.e. less gas in, Brownish...means ok, 'Blackish'...means too much gas in .....'rich'
In your bike's case you may find it 'whitish'.
Hope this helps !

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