Question about Cagiva Mito 125 Motorcycles

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Bike doesnt want to rev when I open the fuel valve on the fuel tank

Replace spark plug and carb. no luck yet.

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  • Cagiva Master
  • 40,013 Answers

Hi, Dana and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
For more information about your question please visit the website below. Good luck and have a nice day.
need help My bike will not rev up and hit the power band
bike wont rev up past 6 000 rpm please help
http://www.carlsalter.com/pdfs/Cagiva_mito_ev%201994.pdf
Cagiva MITO EURO2 125 2004 parts OEM Motorparts
http://www.cagiva.nl/media/owner_manuals/?tx_motomondo_pi4%5Bmodel%5D=&tx_motomondo_pi4%5Byear%5D=-1&tx_motomondo_pi4%5Bmanual%5D=

Posted on Dec 31, 2015

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1997 cb500 won't start

finally sorted when I replaced both plugs. I've never come across one failing instantly before in 30 years of motorcycling (maybe that's because I ride old bm's!)

Posted on Feb 04, 2009

  • 1 Answer

SOURCE: stalling when starting

if after the two mins ur putting the choke back in and the bike dies, it could be that your needing to adjust the idle speed.
it might just be set on the lower limit so that when ur bike isnt fully warmed up it struggles.

Posted on Mar 16, 2009

  • 48 Answers

SOURCE: will only run with full choke and absolutely no throttle.

Carbs gummed up. Need a serious cleaning or a full ruubers replacement/rebuild kit. Gas turns to gummy when left stting in the fuel bowls.

Use a couple of cans of Sea Foam.. best stuff in the world.

Posted on Mar 20, 2009

cape cod bob
  • 292 Answers

SOURCE: bike runs at Idle but dies when given gas

have you changed the fuel filter? you are not getting enough gas, are jets squeaky clean? there is a good fuel system cleaner in the USA called Berrymans B12. put some in the tank warm up bike then let it stand overnight and see what happens. if still no luck repeat process. if you still have same problem then get new fuel filter

good luck

Posted on Apr 02, 2009

  • 3 Answers

SOURCE: i have 1974 yamaha dt 250 enduro the bike sat

clean contacts on points with sandpaper (800 grit). located behind flywheel, will gurantee a fix. you can remove the side cover and get to contacts through holes in flywheel without removing it.

Posted on Nov 16, 2009

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1 Answer

Engine will crank but want rev up charging system metered at 13.7 volts


Hi, Martie if your bike has been idle for months or years and does not want to start you will have to deal with a few remedies:
1. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
2. Remove your air cleaner and clean and re-oil per Mfg. specifications.
3. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
4. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
5. Replace spark plug with a new one and check for spark.
Good luck and have a nice day.

Nov 01, 2015 | Motorcycles

1 Answer

My brothers Honda cbr 125cc will not go above 7000 revs and begins to shudder does anyone know how to fix this?


Hi, Alex and the usual suspects are:
1. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
2. 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.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking.
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Intake air leak.
10. Water, dirt, or rust in the fuel system, carburetor and/or filter.
11. Fuel tank vent system plugged or carburetor vent line closed off.
12. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
13. Carburetor controls misadjusted.
14. Damaged carburetor.
15. Incorrect valve timing.
16. Weak or broken valve springs.
17. Damaged intake or exhaust valve.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
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Jul 20, 2015 | Honda CBR 125 R Motorcycles

1 Answer

Doesnt want to rev when i open the fuel valve on the petrol tank


Hi, Dana and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
For more information about your question please visit the website below. Good luck and have a nice day.
need help My bike will not rev up and hit the power band
cagiva supercity 125 2 stroke help please
http://www.carlsalter.com/pdfs/Cagiva_mito_ev%201994.pdf
Cagiva MITO EURO2 125 2004 parts OEM Motorparts
http://www.cagiva.nl/media/owner_manuals/?tx_motomondo_pi4%5Bmodel%5D=&tx_motomondo_pi4%5Byear%5D=-1&tx_motomondo_pi4%5Bmanual%5D=

Mar 28, 2014 | 2005 Cagiva Mito 125

1 Answer

The bike wont rev up, spits and sputters idles fine. carbs have been cleaned and sinked new plugs and fuel filter.


Hi, Marvin if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will idle and run poorly, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition.
1. If your battery was 2-3 years old when you last had the bike running you should replace it.
2. If you believe your battery might still be serviceable remove it from the bike and put it on a 1 or 2 amp trickle charger for 24 hours. If it is the old lead acid type with visible cells and acid levels fill each cell to the top line with distilled water and replace the caps, run the vent tube into a plastic or styrofoam cup, any cells that are cloudy/milky replace the battery.
3. After charging remove the leads and let the battery sit for a couple of hours then check the battery voltage with a volt meter, you should have 12.5 volts or better, any readings in the 11 volt range you need to do a proper load test on the battery and replace as necessary, any readings in the 10 volt range you have a dead cell and replace the battery.
4. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
5. Remove your air cleaner and clean and re-oil per Mfg. specifications.
6. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
7. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
8. Replace spark plug with a new one and check for spark.
For more information about your issue and valuable "FREE" downloads that you will need please click on the websites below. Good luck and have a nice day.
Start Motorcycle Garaged for Over Year
Won Rev Up
http://www.yamahaventure.nl/pdf/servicemanualxvz13tf.pdf
OEM parts for Yamaha
http://www.starmotorcycles.com/assets/service/manuals/1998/Lit-11626-11-17_320.pdf

Aug 07, 2012 | 1996 Yamaha Royal Star XVZ 1300 A

1 Answer

Aprili RS125 2003. It starts, gets to 7000 revs then reduces. As I rev it stays at 2 - 3000 revs. If I put it in gear it wont drive but with the clutch held I can keep it at 2 - 3000, if I try to take off...


Hi, Stphn_dcksn if your bike has been idle for months or years and does not want to start you will have to deal with a few remedies:
1. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
2. Remove your air cleaner and clean and re-oil per Mfg. specifications.
3. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
4. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
5. Replace spark plug with a new one and check for spark.
For more information about your question please visit the website below. Good luck and have a nice day.
DOWNLOAD 2003 Aprilia Rs 125

Feb 28, 2012 | 2003 Aprilia RS 125

1 Answer

I have been trying to start my kawasaki vulcan ..she try but it doesnt happen...i took out the gas line to drain but is not working ..what else i can do?


The line to drain the gas tank or carb? If you have auto shut off fuel valves(vacuum) set the fuel valve to "prime"(or check owners manual about fuel system)
Some bikes need a fully charged battery to start sometimes.
Will the bike fire on starting fluid?
Spark plugs OK?
Can you get a 1/4 " spark at the plug.
Contact me if you need more info.
Eric

Sep 23, 2009 | 1997 kawasaki VN 800 Vulcan Classic

1 Answer

Bike only fires once


Okay, let's have a look at it. Say Ahaaa.
The probable cause of the problem is not the spark. Get a fresh set of Stock NGK spark plugs, ground the plus to the engine, and check each cylinder for spark as the starter button is pressed for 3 seconds or so. I will wager that the spark is present.

The likely problem is the fresh gas was put into a very rusty gas tank. Bits of rust now inhabit your carb and are having fun plugging up the carb. Look at the gas valve. With a little luck there is a small bowl behind the valve. Remove it and tell me what you see in the bowl.

Apr 11, 2009 | 1982 Yamaha XS 400 SE

1 Answer

Engine runs, but it will not rev up past 2000-3000 rpms,


are you turning the choke off after its warmed up? most will not run with the choke on and warmed up.

also try running it with the gas cap open to see if you have a vent issue in your tank. if air can't get in, then gas can't flow.

if not a choke or vent issue, then try this. turn the petcock off and then disconnect the fuel lines one at a time going into the carb. start with carb fuel line #1 disconnected (and the rest connected) and in a coffee can, turn petcock on and ignition too. fuel pump should come on momentarily and inject some fuel. see how the quantity looks. reconnect the line to carb #1 and repeat for carbs #2 - #4. your looking for a decrease in fuel to a couple of cylinders.

if all looks fine, i would then focus on the carb floats & jets. have the carbs been off for a good cleaning lately? modern fuel breaks down quickly and could cause a gumming condition in the carbs. spraying the sea foam or carb cleaner into the carbs is bypassing the everything in the carb bowl (but it means the spark plugs are ok) so there could be an obstruction. i would look there first.

if uncomfortable removing the bank of carbs, you can try a quick fix first. with the petcock closed, open the drain screws of each carb and let the gas drain out. go and buy some yamaha carb cleaner (liquid in a black bottle) at a yamaha motorcycle dealer. mix it in a separate container with gas as recommended. close the drain screws on each carb. pour the mixture into each fuel line feeding the carb and let it sit overnight. DO NOT POUR THIS MIXTURE INTO YOUR TANK. its not a fuel additive, but a cleaner that will not harm orings or gaskets, but it will not ignite with a spark plug. open the drain screws the next morning and let the mixture pour out. reconnect the fuel lines to the carbs and test drive it.

if that didn't work, then removing the carbs for a good cleaning is my next step. good luck.

Jan 25, 2009 | 2002 kawasaki ZX-6R

1 Answer

Carburator adjusting or no gas


Hi and welcome to FixYa,

Initially, if there is spark on the plug of the front cylinder, then it would be a fuel issue. Pls try:
  • Rig a fuel bottle to replace the fuel tank;
  • Remove the airbox assembly to expose the carb;
  • Start/run the bike, spray carb cleaner on the open carb;
  • note the RPM or sound of engine. Determine if front cylinder will fire even erratically. You could also try the exhaust pipe if it warms up (pls be careful might be overly hot);
  • rev the bike then cover the carb mouth of the front cylinder with the palm of your hand;
  • there should be a strong suction indicating that vacuum is created when on the intake stroke and intake valves are opening;
  • the palm of your hand should be wet with fuel, if not carb issue;
  • might require a rebuilt.
Good luck and Thank you for using FixYa. Happy New Year.

Jan 01, 2009 | 1986 Honda VT 500 C Shadow

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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