I have a Chinese quad for the kids had it started today it was bought second hand the wiring was like spaghetti junction av read alot of manuals and stuff on how to fix and replace certain things I've now got to the point where its sparking it did fire up a couple times but kept cutting out. Now the main problem lies when the spark plug is out it turns over no problem once I put the spark plug in it's like there to much compression for it to turn over and help would be much appreciated if theres a way of uploading a video could someone help me on how to do this maybe get abit of a better idea how some on here can help it has new fuel wiring all seems to be good but am now like a lost dog trying to get it running