2002 Honda 400ex - Decompression

[terry001]

hello riders

Picked the atv up not running. owner did know not why it wouldn't start.(kinda fishy) tore it all down. previous owner put brand new piston in it and gasket set. No marks on the piston so it wasn't running after he rebuilt top end. someone been in it. LOL. checked rings. all ok. Valves are seated.timing dead on.

put it all back together.

Well the 2002 honda 400ex still won't start. Went through everything again.

The spring and plunger for the decompression cam is missing. Will this make it not start. Has the stock cam in it.

What do you guys and gals think????

Edited February 15, 2014 by terry001

[oxidized_black]

it will not start without the spring and plunger with a stock cam. aftermarket cam yes.

honda part # for spring = 14126-KV2-940

Honda part # for plunger = 14125-KV2-940

[oxidized_black]

http://www.quadcrazy.com/atvforum/honda-atv-forum/7898-my-2002-400ex-just-wont-start-but-wants-2.html

[terry001]

http://www.quadcrazy.com/atvforum/honda-atv-forum/7898-my-2002-400ex-just-wont-start-but-wants-2.html

Thanks Oxidized_black. I put the spring and plunger in and the quad started right up. Sombitch. Wow.Valves are alittle noise. More work to do.

[oxidized_black]

:woot: right on !!