20 Most Recent 2007 Vespa PX 125 Questions & Answers


Hi, Dangerouse for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Vespa, despair not, for a mere zero $ you can download another one.
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://modernvespa.com/forum/topic146393
https://www.youtube.com/watch?v=qjlQimDK39Q
https://www.manualslib.com/manual/1229366/Vespa-Px-125-150-Euro-2.html
https://www.oemmotorparts.com/oem2.asp?M=vespa
https://www.manualslib.com/manual/940197/Vespa-Px-125-T5.html

2007 Vespa PX... | Answered on Nov 07, 2019


Hi, Dangerouse before testing any electrical component in the Turn Signal Light Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, "AGM" batteries fall into this category more so than lead-acid types, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals are working the cause could be a faulty turn signal module/flasher or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If your turn signal comes on but takes several seconds before it starts flashing you may have dirty contacts in the turn signal switch/button, the switch needs to be opened up and cleaned also the flasher may be starting to fail. It should be noted that cold weather will only exacerbate the situation especially when temperatures drop down below freezing and the location of the component, turn signal switches on the handlebar are at the mercy of the oncoming freezing 70 mph wind and makes it hard for the contacts to do their job covered in frozen grease/grime
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first, look for, corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
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://modernvespa.com/forum/topic105519
https://www.youtube.com/watch?v=v7uETbJGx7Y
https://www.manualslib.com/manual/1229366/Vespa-Px-125-150-Euro-2.html
https://www.oemmotorparts.com/oem2.asp?M=vespa
https://www.manualslib.com/manual/940197/Vespa-Px-125-T5.html

2007 Vespa PX... | Answered on Nov 07, 2019


voltage over battery using a voltage tester should go max 15 v when you rev the engine..

2007 Vespa PX... | Answered on May 28, 2019


i would check the coil first, it is a lot cheaper then a cdi box, and a good chance that maybe your problem.

2007 Vespa PX... | Answered on Nov 15, 2018


Hi, Neil 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. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Air/fuel mixture screw improperly adjusted.
11. Accelerator pump damaged or not working.
12. Water or dirt in the fuel system, carburetor or filter.
13. Restricted, blocked or kinked fuel line.
14. Fuel tank empty.
15. The gas cap is not venting properly or fuel tank venting system blocked, loosen gas cap and go for a test ride.
16. A failed fuel pump, pressure regulator and or fuel injectors.
17. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
18. Needle and seat stuck closed in the float bowl.
19. Petcock clogged or damaged.
20. Lean angle switch is faulty or needs adjustment.
21. Catastrophic engine failure, perform a compression test.
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.scootercentral.net/forums/viewtopic.php?t=18173 Px 125 keeps cutting out Help Modern Vespa Forum Two Stroke Smoke Forums...
VESPA PX 125 150 euro 2 Workshop Manual
Vespa Parts Vespa Spares Vespa Genuine Parts
VESPA PX 125 T5 Operation And Maintenance

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

2007 Vespa PX... | Answered on Nov 16, 2017


if the lock is surely open then you could use a strong flashlight and lift the seat a little with a big screwdriver (or crowbar) in the small gap between fuel tank and seat.
- then you can see the lock and try to move/turn it somehow until it pops open.
seat-jammed-px125-sxbikrkt5iu1vmjxkjitshw2-2-0.jpg

2007 Vespa PX... | Answered on Nov 29, 2014


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Vespa, despair not, for a mere zero $ you can download another one.
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://modernvespa.com/forum/topic131950
https://www.youtube.com/watch?v=jiEA9SXhtng
http://www.49ccscoot.com/manuals/Vespa_S_50_2T_Service_Manual.pdf
https://www.oemmotorparts.com/oem2.asp?M=vespa
https://www.manualslib.com/manual/1356876/Vespa-Et2-50.html

Vespa ET2 50... | Answered on Nov 07, 2019


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Vespa, despair not, for a mere zero $ you can download another one.
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://modernvespa.com/forum/topic129288
https://www.dailymotion.com/video/x6gtkoc
http://www.49ccscoot.com/manuals/Vespa_S_50_2T_Service_Manual.pdf
https://www.oemmotorparts.com/oem2.asp?M=vespa
https://www.manualslib.com/manual/1356876/Vespa-Et2-50.html

Vespa ET2 50... | Answered on Nov 07, 2019


Hi, Anonymous for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Vespa, despair not, for a mere zero $ you can download another one.
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.
https://www.google.com/search?q=Wiring+diagram+Vespa+ET2+50&tbm=isch&source=univ&sa=X&ved=2ahUKEwi18pLJoNjlAhVLuVkKHaz0AmAQsAR6BAgJEAE&biw=1440&bih=757
http://www.49ccscoot.com/manuals/Piaggio_Tech_Manual.pdf
http://www.49ccscoot.com/manuals/Vespa_S_50_2T_Service_Manual.pdf
https://www.oemmotorparts.com/oem2.asp?M=vespa
https://www.manualslib.com/manual/1356876/Vespa-Et2-50.html

Vespa ET2 50... | Answered on Nov 07, 2019


Hi, Mick for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Vespa, despair not, for a mere zero $ you can download another one.
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.
https://www.google.com/search?q=The+starter+motor+location+Vespa+ET2+50&tbm=isch&source=univ&sa=X&ved=2ahUKEwjEnYqNn9jlAhVQj1kKHevmBx4QsAR6BAgEEAE&biw=1440&bih=757
https://www.youtube.com/watch?v=ZXiZW06Oq00
http://www.49ccscoot.com/manuals/Vespa_S_50_2T_Service_Manual.pdf
https://www.oemmotorparts.com/oem2.asp?M=vespa
https://www.manualslib.com/manual/1356876/Vespa-Et2-50.html

Vespa ET2 50... | Answered on Nov 07, 2019


Hi, Adam287 for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Vespa, despair not, for a mere zero $ you can download another one.
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://modernvespa.com/forum/topic115916
https://www.youtube.com/watch?v=wkS9iKhWW1w
http://www.49ccscoot.com/manuals/Vespa_S_50_2T_Service_Manual.pdf
https://www.oemmotorparts.com/oem2.asp?M=vespa
https://www.manualslib.com/manual/1356876/Vespa-Et2-50.html

Vespa ET2 50... | Answered on Nov 07, 2019


Hi, Peter for this scenario you will need your service manual, parts fiche, and owners manual if you can't find the best tool you ever bought for your Vespa, despair not, for a mere zero $ you can download another one.
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://modernvespa.com/forum/topic158446
https://www.youtube.com/watch?v=wkS9iKhWW1w
http://www.49ccscoot.com/manuals/Vespa_S_50_2T_Service_Manual.pdf
https://www.oemmotorparts.com/oem4.asp?M=Vespa&T=ET2%2050&Y=.&L=ET2-50
https://www.manualslib.com/manual/1356876/Vespa-Et2-50.html

Vespa ET2 50... | Answered on Nov 07, 2019


the Vespa ET2 50 has a two-stroke engine which needs an oil mixture in the gasoline. There are 2 (two) tanks under the seat: 1 is for gasoline and the other for 2T-oil.
If you dont't fill that oil tank with two-stroke oil the engine will run dry after a couple of miles and the bearings in the motor blow up.
Then you need a complete rebuild of the engine which costs more than the value of the ET2. http://www.wotmeworry.org.uk/manuals/ET2/et2manualpt1sm.pdf
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Vespa ET2 50... | Answered on Nov 18, 2018


Hi, Juan if you have changed your engine size, fuel delivery system, air filter size or flow rate, mufflers or exhaust system or a significant change in altitude your carburetors need re-tuning and if your fuel system (gas tank, filters, fuel valve and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or your bike has been sitting for months or years without running these components must be "PROPERLY" cleaned and reassembled "CORRECTLY" before any adjustments can be made. Tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry for paper elements or lightly oiled for foam and meshed elements and properly installed. Here is how and where you compensate trouble: "TIP" if your engine "BOGS" you're not getting enough fuel.
1. Close to 1/8 throttle is managed by the air screw and pilot/slow jet.
2. 1/8 to 1/4 throttle is managed by the air-screw, pilot/slow jet, and throttle slide.
3. 1/4 to 1/2 throttle is managed by the throttle slide and jet needle.
4. 1/2 to 3/4 throttle is managed by the jet needle, needle jet, main jet, and air jet.
5. 3/4 to wide open throttle is managed by the main jet and air jet.
6. A wide open throttle is managed by the main jet.
If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, the engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues.
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.
Vespa ET2 50 cc Scooter Custom Performance Carburetor Carb Stage 1 3 Jet...
STEP 1 ADJUST IDLE MIX FASTER SCOOTER EPISODE 4
Carburator Theory and Tuning
VESPA LX 50 Workshop Manual
Vespa VESPA ET2 2001 Parts
Vespa LX 50 User Manual

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


Vespa ET2 50... | Answered on Dec 16, 2017


Hi, Karatejohnny there are few things you need to look at when trying to troubleshoot your scooter for power loss. How does it sound? If you run it wide open throttle when warmed up, does it peak out? or stutter? is it loud, or very quite the symptoms can help decide what to try. When you are going full throttle, the engine should get to a high RPM and sound smooth here are a few things you should look for:
1. Plugging air intake- will start well cold, but be hard to warm up and not reach top speed. The engine will stutter at high RPM.
2. Open air intake- to much air or air cleaner is disconnected- engine will not have power at high speed, make vacuum cleaner sound. Acts like it's running out of gas. ( sounds almost the same as a dirty carburetor.)
3. Plugged exhaust port the engine sounds and runs good, but has no power. Slow to take off. Same as plugged muffler, but if the muffler is plugged you get a very smooth exhaust note at idle. Humming instead of pop pop pop pop.
4. Fouled spark plug- backfire. If you get backfire, pretty good chance the plug is fouled.
5. On models with belts, the gear ratio drops as the belt gets thinner (most hondas have belts).
6. On a moped with high mileage, the belt will cause slow top end speed if worn thin.
7. If you have a bike with chain drive in an oil bath and you "OVERFILL" the oil amount in the chaincase, that makes for slow running as it requires too much power to turn the oil.
8. If your engine does not rev up well and stutters or sputters, like when it is cold with the choke on, the engine is running too rich. (too much fuel).
9. Is the air filter soaked with oil? Clean with soap and water!
10. Is the air opening in the airbox plugged? Very common for a spider or mud wasp to build a nest in one of the intake holes.
11. On some scooters it is common to get a leaf stuck in the intake port of the airbox, causing a 10mph drop in top speed.
12. Don't try to adjust the screws on the side of the carb to get lean or rich, as they are for the idle circuit only.
13. The idle air screw should be about 1 1/2 turns out on most scooters.
14. Say your engine revs but kind of wheezes or acts like it runs out of gas it is common to have a buildup of hard carbon on the inside diameter of the hole in the main and pilot jets, and it must be carefully removed.
15. If your moped does not idle the pilot jet is likely plugged.
16. Anytime a moped has not been used for 1 year or more, and still has the same fuel in it, good chance you will need to clean the jets.
17. The poor quality of today's gasoline has made this a rather steady bet.
18. Mopeds are affected more than most vehicles because the small size hole the jet requires is easily plugged, even by thick oily fuel, or water.
19. Drain your carb once in awhile! Most have a screw of some type at the bottom (where the drain needs to be) of the carb.
20. Make sure the air boot to the airbox is not on wrong, kinked, hard and shrunken.
21. Don't oil the air filter if you got the stutters.
22. On some scooters, you can leave one snap loose on the airbox lid to allow it to crack open, to get full rpm.
23. "WARNING" too much lean out on the gas, and since the fuel cools the piston, the piston can "MELT"
24. Still slow? Check the muffler tip. Make sure no carbon buildup is inside the tip, stick something in as far as it will go.
25. Common on some scooters to have the tip bent over on a curb, then carbon up solid. common of all types to have the whole muffler plug.
26. When you have the muffler off, is it heavy?
27. Can you get the baffle out to see if the holes are plugged?
28. Check the exhaust port on the cylinder.
29. If you can't see all the way into the piston, use a mirror and a flashlight to make sure the piston is ok and the port is not plugged where it meets the piston.
30. Common on all models to plug here, Just scrape it out so the hole is full size again.
31. Don't worry about the small film on the inside of the port, I am talking about a very thin film that forms a wall in the exhaust port right next to the piston.
32. A 1 1/2 inch hole can be reduced to the size of a pea...... With a thin film of carbon.
33. If you can see the piston ok, it's not the problem.
34. If you are in doubt regarding your exhaust pipe being plugged, put your hand behind the muffler to see how much pressure is expelled. compare to another bike.
35. It should blow pretty good and have a distinct pop pop pop pop sound while idling, not a steady humming.
For more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Troubleshooting
Modern Vespa et2 running problems loses power when accelerate
VESPA ET4 50 Workshop Manual
Vespa VESPA ET2 2001 Parts
http://www.vespaclub.org.pl/images/manualki/et/ET2_ET4TechnicalManual.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Vespa ET2 50... | Answered on May 20, 2017


the Vespa ET2 50 has a two-stroke engine which needs an oil mixture in the gasoline. There are 2 (two) tanks under the seat: 1 is for gasoline and the other for 2T-oil.
If you dont't fill that oil tank the engine will run dry after a couple of miles and the bearings in the motor blow up.
Then you need a complete rebuild of the engine which costs a lot.
et2-vespa-put-bit-98-ron-fuelin-tank-ran-ztge4ngo1x5wj54shcvuhzop-1-0.jpg

et2-vespa-put-bit-98-ron-fuelin-tank-ran-ztge4ngo1x5wj54shcvuhzop-1-2.jpg
http://www.wotmeworry.org.uk/manuals/ET2/et2manualpt1sm.pdf

Vespa ET2 50... | Answered on Dec 19, 2016


-such strange behaviour very often occurs when the rollers (& belt)in the variator case are worn, they have to be replaced by a dealer.
-they have a lifetime of only 12'500miles (20'000km)
You should change the roll bearings in the variator box not only the belt! -the complete servicekit
vespa-et2-always-slow-zn2fhcavdapcgl1ljx1qalsv-5-0.jpg vespa-et2-always-slow-zn2fhcavdapcgl1ljx1qalsv-5-5.jpg

Vespa ET2 50... | Answered on Dec 10, 2014


you need to pull up the rubber cover at the base of the mirror and tighten the nut at the right position... fix-wing-mirror-vespa-et2-wrvo0vnsxenp22qrsalmbzkb-3-0.jpg

Vespa ET2 50... | Answered on Nov 26, 2014


it's impossible - you need a new coded key, made with the brown master key (code on the plastic card)

Vespa ET2 50... | Answered on Sep 29, 2014


Does kick start turn engine? I'm sure it does, is fuel getting to carb, does it smell of pertol when trying to start? Have you knocked HT cap off the spark plug? Did you get some cleaning fluid in the electrics?

Vespa ET2 50... | Answered on Aug 06, 2014

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