1985 atc 70 need help!!!!

[whiteboarder]

ok my honda70 i have it normally starts fine but then dies within a few seconds i think the longest i have ever riden it was like 4 minutes before it died so i have no clue what the problem is and it is getting spark

[ejc042]

Have you cleaned the card and checked the jets to make sure you are not having problems with clogged jets.

[whiteboarder]

yes i have cleaned the carburetor out but were are the jets and how do u clean them

[ejc042]

.. the jets are inside. They are the brass colored pieces that are in the top half of the bowl.

http://houseofmotorcycles.bikebandit.com/partsbandit/showschematic.asp?dept_id=179989

check items 30 31 13

[ejc042]

Are you running with the air box? Are you using the coke? These will affect air/fuel mixture and ance the bike warms up it may shut off.

[whiteboarder]

i took out the air filter because it wasnt in very good of shape would that effect it

[ejc042]

No air filter will allow dirt in the motor which is not good. It also restricts the air flow a small amount. With it off, you could see the bike run a little lean.

[whiteboarder]

so should i put it back on then

[ejc042]

I never run with out my air filter. dont want any dirt to get in carb. Was the bike running different with or without the filter?

[whiteboarder]

not really its about the same but i just went out put the air filter back in and started it up it fired and ran good for about 3 minutes but then i went to down shift because i was in 3rd and was stoped at a bottom of a hill then it started acting like it was out of gas then died then i went to restart it and all i get is like 1 fire but thats it so it wouldnt start.

[ejc042]

When it dies out and doesnt want to start, did you try using the choke at half or full choke to see if it made any difference. Also take a look at the spark plug. that will help you tell if it is rich or lean.

[whiteboarder]

i have tried the choke at half it sometimes works then others it doesnt and the spark plug is really black when i pull it out

[ejc042]

If the plug is really black, you are probably running rich, or are burning oil. Does it smoke when it is running? If so you are probably burning oil.
Either situation could bew causing the problem. When the plug is fouled you will get poor spark.

[whiteboarder]

i beleive it is running to rich because it doesnt smoke alot when running so what should i do

[ejc042]

check the slide needle to see what notch it is on. Should be the middle. also check your idle air/fuel mixture screw. Not sure what it is factory, Probably around two turns out.

[ejc042]

Where are you located? You may be near someone who can help.

[whiteboarder]

where is the slide needle

[whiteboarder]

i live in washington

[ejc042]

The slide needle is in the slide. you remove the cab top and pull out the slide.
http://houseofmotorcycles.bikebandit.com/partsbandit/showschematic.asp?dept_id=179989

See item 2-slide needle

[whiteboarder]

allright well i will go check that also in is lean and out is rich right

[TimSr]

If it starts, runs, and dies, I highly doubt its a jetting or needle adjustment issue. It has to be running properly before you can make those fine tune adjustments.

First thing to do is put a fresh plug in it, and try to run it an see what happens. If it runs for a while and then dies, immediately pull the gas line off the carb, and see if gas is flowing. If its not, loosen the gas cap, and see if gas starts running.

If you have gas flow to the carb, but it wont start, pull the clean, NEW plug from the carb, and see what it looks like, kick it over and test for spark.

Answer these two basics first, and post your results and we can go from there.

[whiteboarder]

alright when i get a new spark plug should i get a hotter one or the same also what do i do if the gas isnt flowing to the carb

[ejc042]

I would use the OEM plug. If you are not geting fuel to the carb, the fuel tank or lines are blocked. You will probably have to drain and clean the tank.
also if you need any parts, let me know. I am getting ready to part out an ATC70.

[jenndnn3]

Whiteboarder , where are you in washington?

[whiteboarder]

i live in the puget sound on an island but ya i was just riding it again and when i take off the lower fuel line and let it either drain so that it looks like there is no gas in ther or i let the line fill up all the way and then it will start again and again but it still dies so i think i might be clogged but ya i need a pull starter i am having to push start it every time so if u have when let me no how much u want for it

[whiteboarder]

how would i clean out the gas tank

[TimSr]

You need to take the petcock off. I dont have a mental picture of the ATC70, but they usually have two small bolt or screws that hold them on the tank. When it comes off, youll probably see a clogged screen on a tube that needs cleaned up, and then rinse your tank out before you put it back on.

If you loosen the gas cap, and fuel starts flowing faster, the tank cap vent is clogged or closed.

[whiteboarder]

the pet cock is on the carburetor and i have cleaned that out before i beleive that it is the tank that is getting clogged because earlier i went out and took the fuel lines off the tank and tried getting pipe cleaners up ther and that work and there was alot of little pieces of rust that came out so how would i clean out the tank

[ejc042]

If ti has alot of rust, I used a container of BBs to break it loose and clean it out. After that, they make products to seal and protect your tank inside.

[TimSr]

I cant picture the ATC70, maybe someone else can help out, but I assume there is a nipple on the tank, and the line is a straight shot out. You obviously need to make sure everything is clear. I dont know if it comes out and has a screen or not. If its a straight through nipple, you can poke a wire through and make sure its clear, and blow through it with compressed air. If you have debris in the tank, Id thoroughly flush it out with the garden hose until all loose particles are gone, drain it well, and blow through it with compressed air until its completely dried. Then do a couple of light rinses with soem gas to displace any remaining water. Recheck for flow out of the hole its supposed to come out of. Reassemble and try it again.

[jenndnn3]

2 Feeder gas lines with petcock attached directly to carb....One of lines should go all the way up inside the tank. Use stuff Tim recommended above.. Get a new Oring and screen and Clean out your petcock Same method decsribed above. And if You decide not to seal the tank you will prob need inline filters on top of the screen. Another great chemical that eats out water is MEK...

[200Xtreme]

Yes, it should have two nipples on the tank. One for ON (an inch or two above the bottom of the tank), and one for RESERVE (near bottom of tank). Remove tank, and rod out the nipples. Thouroughly clean tank, and rinse well. Reassemble and install a cheap lawnmower inline filter, and change it often for awhile.