won't start

  1. C

    Need help: first build; engine wont start was origionally running

    So I have set the engine onto the mountain bike have checked the spark plug for spark and I do get spark when tested on the outside case. I can get the engine started when I peddle to 20km/h but it wont idle and The throttle needs to be full throttle. If I start at a lower speed I get...
  2. Sikk_29

    Compression Loss? Engine Will Not Start

    I recently upgraded to an aftermarket high compression head on my Amazon-purchased (Seeutek) 66cc two-stroke engine. I had been having issues maintaining an idle after the bike had been ridden for 10 minutes or so, which I assumed to be head warpage. I removed the cylinder body to replace a...
  3. E

    Bike ran and rode for 2 tanks and now won’t start

    This is my first bike every think is how it was when it was running stick needle height and so fourth. I got spark and fuel. It was flooding and then I cleared it out. Still won’t start I got a couple of back fires and that is it. I think it might be flooding. I could use some good help. THANK YOU
  4. J

    Trouble starting then...

    Hey all, this is my first motorized bicycle and my first post. So first after I received and installed my kit everything went very smoothly. I was able to get 'er started without too much trouble and it road really well for 2 months. Then after sitting for about a week with no riding I decided...
  5. J

    Engine Not Starting After Port Work.

    Yo. Bet you guys have heard this one before. :/ So I've done some work on my engine & now its not starting. I cannot work it out as I know I have 1 - Fuel, 2 - Ignition & 3 - I can feel compression. I used a dermal to port match my intake & exhaust. I cleaned up the transfers & put a bur...
  6. C

    Brand New Chinese 66cc kit won't start. No spark(?)

    i bought a brand new generic Chinese motorized bike kit off eBay the other day. It's a 66(80cc) kit with a slant head. After installing it I couldn't get it to start. I'm sure it's getting fuel because the plug is wet when I pull it out. I've checked for spark multiple times and I only SOMETIMES...
  7. J

    Engine only stays one when pedaling!

    Hello, This is my first time adding a 2 stroke 66cc engine to a bike. I bought the kit and installed it. The problem is it will only start when I pedal and then release the clutch, but when I add throttle nothing happens, just the sound of engine changes, and if i stop pedaling the engine...
  8. S

    Help interpreting test results? Bad mag AND CDI?

    Hi, all. I am so glad I found this forum. Spent about five hours reading here last night after completing my build and making myself look like a fool in front of the neighbors when it wouldn't start. It's a 2 cycle Chinese kit from bikemotorkits.com. The sticker on the magneto cover...
  9. Tomasito

    Brand new engine won't start =(

    Hi all, I installed a kit in my girlfriend's bike, but the little $#%&$ won't fire, i ride it like 15 times arround the block trying to start it up (with the whole family on the street waiting to see it come alive) and nothing, not a single explosion. This is what i've checked: · I have...