Question about Vento Gladiator XLS Motorcycles

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I have a 2004 vento phantom r4i 150cc scooter. I keep blowing my tail light when i give it some gas. I have replaced the rear light essembly, and switches. I do not know what is causing this problem.

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  • littletrunks
    littletrunks Dec 23, 2012

    Hi i have a 2008 Vento scooter bran new i brought it in the beginning of the summer is great i luved it until i started runing throught problem 1st i hear a big squet coming from the rear wheel when i slow down is very loud my back light keep blowing out on me & sometimes when i take off its temp to shut off on my i had to reduce my throter & then try to give gas again i had to replace my belt 3 times already it still run and i keep hear this bug sound when i take off & while im in driving mode what could that be this is my 1st scooter and i hate to sell it have i put money away just to get my 1st scooter thanks eggie c.



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The voltage regulator is probly failin--get it tested along with alternator etc--also inspec wire harness--buy a repaair book by clymer or haynes

Posted on Mar 15, 2011


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Vento Phantom R4I will not start backfires

Hi, Marland and the usual suspects are:
1. 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 preliminary 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.
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. Faulty main circuit breaker and or connections.
4. Faulty ignition coil and or connections.
5. Faulty spark plug, oil or gas fouled, wrong heat range or service type, wrong gap, loose in the cylinder head, broken electrode or insulator.
6. Faulty spark plug cables, leaking or broken, internal damage check for spark leakage in the dark.
7. Faulty ignition module, switch, CKP, MAP, CMP, sensor and or any connector in the ignition circuit could have corroded, loose, or broken pins/sockets
8. Burnt exhaust valve or air leak in the exhaust system.
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Replace the spark plug or replace the gas filter. Check your spark plug wires for corrosion.

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put a volt meter on the battery,,,,it should read 12.6 before starting..and 14.25,,when running.....and 13.75 when you shut it down,,,,,if not its not need a good battery to turn on the regulator/alternator/stator/rotor to charge the battery,if its not 12.6 your dead in the water

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1 Answer

My engine just stopped running. There is no fuel pressure. I took the fuel pump apart and the diaphragms appear to be good. There is a line that goes to the fuel pump marked "P" . It comes from...

Hi, Wiley the following is a systematic procedure for diagnosing fuel pump issues designed to keep "DRACHMA" to a minimum. If you need parts check with Amazon and eBay first to keep costs down.
1. If your pump does not turn on check the pump fuse and relay and all wiring including connectors for corroded, broken, or loose pins/sockets.
1. Normal fuel pump pressure is 3-5 PSI.
2. Check any rubber or plastic tubing for age-related pinholes by removing and plugging the ends that connect to the fuel valve and then turn on the ignition switch and watch for fuel streams exiting the pinholes, if any exist, replace tubing as necessary.
3. Check for a clogged a primary fuel filter that comes off the bottom of the pump to screen out big rocks and clean as necessary.
4. Check for a clogged secondary fuel filter that's outside if applicable by removing it from the system and replace it with a short splicing tube turn on the ignition switch and recheck fuel pressure if pressure increases to normal pressure you need a new secondary filter.
5. If all the above check out OK and the pump is not functioning properly then you need a new 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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2005 Vento Phantom R4i will not start

Hi, Jimmytoys you need "FIVE" things in order for a cylinder to run properly:
1. FUEL: in order to validate your not getting fuel spray some starting fluid into the air cleaner and hit the starter button, if it fires up and runs for a few seconds then you know you have a fuel delivery issue. Multi carb banks should be bench "SYNC"
2. SPARK: remove the spark plug and with it connected to the spark plug cable ground the threads to something metal you should see a bluish white spark if not you have a faulty spark plug, spark plug cable, ignition coil, condenser, CKP, ECM, sensor or the wiring in between.
3. COMPRESSION: you must have at least 80-100 PSI for most bikes, multi-cylinder engines should be within 10-15% of each other if not perform a leak down test you may have a burnt or bent valve or hole in the piston or broken rings.
4. CAM TIMING: confirm your timing marks are aligned to see if the cam chain or adjuster are worn out and the chain has skipped a couple teeth.
5. IGNITION TIMING: on older bikes check to see if your points have not closed up, timing plate has not become loose and confirm with a timing light for proper retard and advance functions, on newer bikes where timing is controlled by an ECM and is nonadjustable check you CKP, TPS, MAP, O2, sensor or its counterpart for integrity.
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I have a bkm xeidon 150cc scooter. It will not go over about 35mph and it lurches when it does this. It acts as though it is not gettting gas but it does not stall. It sounds good at idle and...

EASY FIX!! There is a silver cover over the carb, remove two screws.Inside there is a spring that holds down a diaphram made of soft rubber,it may have a hole or be damaged in some way or not seated properly.If it has a hole or slit it can be fixed with gorilla glue till you can find a new one. good luck. Joe D

Oct 21, 2010 | 2004 Vento Gladiator XLS

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Battery size (volts) gas to oil mixture

12V battery 40:1 to 50:1 two-stroke ratio, but you shouldn't need to worry about that - it has automatic two-stroke injection.

Jun 28, 2009 | 2004 Vento Gladiator XLS

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