Low Compression  By  ksaun123 (Read 7,857 times)

That would be a quick way to add many miles . I've delivered food for a few yr when I was a little younger and you def put the miles on !!

Right now my odometer reads a little over 12,700 miles . with my speedo cable breaking at the beginning of summer I may be closer to 20,000 then I first thought , considering I average 6,000 miles every summer and fall season of riding. I wish I knew for sure what the reall miles are . I'm thinking the highest it could be would be around 19,000 and the lowest would be more like 17,000 . either way I'll be well over 20,000 by the end of winter .

You broke of the head cover valve ?,do u mean the valve cover vent valve ? If so how did u do that ? Lol . not really funny just puzzling . when it comes to the brakes , do you not have brake pads or do u think they are just wore out ? If u think they are wore out did u adjust the brake lever arm at the back of the scoot ? You can normally adjust the brakes with the nut but after it tightens all the way you have to adjust the arm . I found that the brakes last for over 10,000 miles pretty easy " at least mine did" I kept readjusting the arm and each time I'd have to adjust the nut untill I couldn't go any further then after the arm adjustment back to adjusting the nut again . when I first got my scoot used , I was told it needed brakes . so I bought new brakes and put them in . I noticed the old ones had a lot of pad left. I had those new brakes in until this summer " so I'm guessing they lasted for 13,000 or so " and they still had at least 1/4 pad left on them .

A lot of stuff to process in your post here.

Feeling like it might take off could just be a high idle, try adjusting the idle speed screw that is on the throttle wheel on top of the carburetor to see if you can lower it to a good point. To lower the idle speed twist the idle speed screw counter clockwise a quarter turn, wait 10 seconds, and keep going until it feels like it might stall out, then screw it in (clockwise) a quarter turn or two to where it feels just right.

Since it bogs while you are using the throttle I would say try adjusting the fuel mix screw while you are working on the carb anyways. Does it bog at lower or higher RPMs, on accel or decel, or at idle? Provide as much details as you can. 

How many times have you used the same gaskets? Have you been reusing the head gasket? I remember seeing your head gasket in one of your earlier posts in this thread, I even used your image as a reference in my own thread, it looks like your head gasket had tears in the red lining, like mine do. I'm pretty sure my head gasket is causing a leak due to reusing it whenever I crack open the engine, and I've been working in the cold, and below freezing, like you and I have seen damage to the head gasket grow each time I opened it. It's safe to say that the condition of this gasket seems to be the most important, and reusing it seems to be a huge risk in damaging your engine as I feel I have realized through experiencing it.

As far as the scoot being loud, that should be expected with a broken exhaust stud. Replace the exhaust stud now, don't even idle it, don't mess with it, replace the exhaust stud first. Did the stud itself come out, did it bring the threads out with it, or did the stud just break off the end of it? Depending on the level of damage you may want to just replace the head and save some time and prevent any damage. Take it from me, I rode it with a broken exhaust stud for a month and I've been sitting around for a few weeks now trying to get my arse back on the road... It may have been only a small thing, but it destroyed my exhaust valve, and I don't wanna see it happen to you too. 

I have successfully installed a 50cc rectifier on a 150cc scooter, both were AC powered from stators with batteries for starting only. To this day my friend says it still works for him, so it may not be a question of size, maybe bad wire or ground somewhere? I once had the same problem, I traced all my wires and found a connection point down the line had become corroded from the weather and sand/salt from the streets. Try doing an ohmz test to see that the wires indeed are all connected from end to end and that they are not losing current somewhere. Try testing the wires that are not supposed to be connected to each other as well to make sure there are no crossed wires. 

20 amp fuse is a little big, there's nothing on your scoot that should demand 20 amps, a 15amp fuse is still too large I would say but a lot of scoots come with 15amp fuses. The main point of the fuse is to burn up before the wires can burn up to prevent the wires and components past the fuse from becoming damaged. If the rating of the fuse is too high it will be useless to prevent any damage. I have seen them burn up from using the starter constantly for more than 5 seconds repetitively, I have seen them burn up from a loose ground causing arcing, and they can just become old and loose and break easily too.

The fuse has nothing to do with your lights when the engine is running, only to do with the passing light that runs off the battery. You should look for loose or wrong lighting wires. If you use the passing light button, does the light on the dash and the headlight lit up?

If both the lights aren't working and the battery isn't charging I would suspect your stator/magneto wires are not connected or maybe they are loose or bad. Both the running lights and the charging system runs off of the stator/magneto.

As far as breaks, do you have front brakes? The back brakes only are about 20-30% of the stopping power. The front brakes are about 70-80% of the stopping power and are also the only ones you should be using in the rain and snow IMO. I would focus on making sure you have working front hydraulic disc brakes before working on the back. I rode around for 6 months without a back brake, and sudden stops were still possible with front brakes only, however I did try riding with only a back brake, and sudden stops are impossible, as well as you have to time your stops and plan them out ahead of time when only using back brakes.

Yeah u have a ton of pad left on them , all u need is to adjust the arm.

Wonder why the motor is surging in the video??

Is the exhaust leaking around the head?

How clean was the pilot jet/ports and are there any air leaks?