atc 70 update still wont run HELP!!!!!!!!!!!!!!!!!!!!!!

[42F67N]

I cannot figure out whats wrong with this atc 70 the other day it just up and quite while it was being run so i

removed the carb took of the float bowl cleaned it out removed the jets cleaned them placed the intire carb in a bucket full of carb cleaner overnight installed new fuel lines 2 new fuel filters regapped the spark plug wont start i try to pull start it and it dosent even make a effort to start.

i unhooked the plug wire put a screw in it held on and had someone crank the engine its got spark

i unhooked the kill switch wires thinking maybe the switch was bad still same thing wont start

pulled out the plug its got fuel on it still wont start

tryed putting the bike in 4th gear and pushing it to a start nothing just kept turning over.

im frustrated with this bike anyone have any other ideas?

[Tri-Z Pilot]

Maybe its the valve timing, maybe the timing chain was so worn that it hopped a couple teeth, did you try a new sparkplug, not a cleaned one, a new one? Have you done a compression test?

[Darius1502]

does the motor have compression?

Are the valves shot?

Are you sure you did not burn the motor by not running oil in the crankcase?

[42F67N]

the motor deff has compression when u try to push it in gear u can fell it has compression it also has oil in it i dunno anything about the valves.


dont these bikes have points?

how do u get to them u need a fly wheel puller ?what should they be set at?

[42F67N]

nobody huh? ive only had this thing 3 days and am ready to sell it

[jdparsons1]

If your getting Compression, spark and the the spark plug is wet, maybe the float is getting stuck open?

[42F67N]

Im gonna put new points in it a new plug new wire and coil if that all dont work then ill rebuild the carb if that disent do it it shall become a bench in my garage lol

[olive123]

are you the guy who bought the one in Palm beach from ebay?
Let me know if you are serious about getting rid of it. I am in ft lauderdale
and will pick it up. Need one for my 6 year old and dont mind tearing it down to frame and rebuilding it.
Please let me know.
email me

[mymint87]

check points and condenser..those thing are nitorious for getting hot and failing

[42F67N]

nah i didnt buy this atc in palm beach i got it off someone i kinda knew,since ive allready done so much to it ill keep sluggin away at it till it get it.

any other way to get that flywheel and all off to get to the points without using a flywheel puller?

[renotrikeguy]

I had a problem similar to that the other day. I took my plug out and warmed it up with a lighter and then put it back in. First pull and the bike was running.
Then again the outside temp was down about 35 degrees (F) and it was getting colder.

[42F67N]

its 85 plus here in florida so i dont think thats the problem lol

[jdparsons1]

Not to brag but I just got my atc70 i got off ebay running today. I retapped the spark plug hole to the next size up and put a new piston and rings in it, and painted the cylinder. Rebuilt the carb and she fired right up. Now to start making her look pretty. I got 3 new tires, a new seat cover, new tank decals and a some cans of paint.

Its alot of work but these engines are pretty easy to work on.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&category=6724&item=244 0895248

[FullBore]

Put a NEW SPARK PLUG in before you go any further!

Nat

[junjun01]

Mine Have A New Plug..,,I Had It Running The Other Day Idling, Then It Just Shutt Off...,Never To Start Again....Have Try The The Same Things You Did & Nothing...I Have Sparks The Wires Are Ok...New Plug.......And Yes....There Is Gas In Tank ......I Wish I Knew What Its Is