we have a 1983 honda 200 chain driven 3 wheeler. when we first got it it was hard to start but would run decent it wasnt riden a whole lot a few years later it has issues we had it going a while back it was hard to start and didnt run well. it would jerk your arm when your pull starting it and always has. now it doesnt run at all. it doesnt seem to be even want to fire and still pulls your hand off ect. and wont start. we have checked out the cdi plate a few times it has spark. its getting gas, and excess gas sometimes it pretty much spits gas. we brought it into a place just in case and they said they were not sure figured may be timing. as of now we are going with possibly timing chain or intake valve stuck open? Please any suggestions, tips, ideas would help alot thank you.