help

[northern400ex]

I have a 400ex I just put the motor back together and it acts like its not getting sucking the gas to get a spark going? Need help fast.

[trailrider894]

Originally posted by northern400ex
I have a 400ex I just put the motor back together and it acts like its not getting sucking the gas to get a spark going? Need help fast.

You aren't being specific enough... Is it getting spark?? is it getting fuel?? etc..

[northern400ex]

Its getting spark its just not running its like it out of time but I timed it just right.

[northern400ex]

Its acting like its out of time even though I timed it. Is their a right and a wrong way to put a cam in or what it got the hotcams stage 2 in it

[kt1148]

Read through this it may help. I also suggest a Clymer manual...http://www.exriders.com/vbb/showthread.php?s=&threadid=452559&perpage=10&highlight=camshaft%20install&pagenumber=1

[northern400ex]

Thanks bud that got me going. its running like a cheetah on steroids. But is there anything else that I can do with buying any add-ons just like tinkering or something like that to the motor or Carb?

[HondaPohl]

Dude its endless with the setups you can do. The basics are exhaust, intake and jetting. Some guys run a honda 450 carb. I always made my stock carb work the way I wanted but mine was mostly for trail riding. You can play with the timing. Do you have any mods now?

[northern400ex]

I have a Hinson racen clutch renthal chain and sprocket lexx exhaust system hotcams stage 2 wisco piston. 10-1 I run 93 octane in it and I got the k an k graphics on it. That's bout it I think

[HondaPohl]

If you have the stock air filter setup, go with a K&N or Unifilter, depending on where you ride and remove the lid. Get some more air running through your carb. You will have to start playing with jetting than but you will make more power.

[northern400ex]

K I had just now bought a k&n filter. And jetting Idk how to do thar but I figured out how to tear this engine apart by my self so it shouldn't be to hard to do.

[TheLane]

Originally posted by northern400ex
K I had just now bought a k&n filter. And jetting Idk how to do thar but I figured out how to tear this engine apart by my self so it shouldn't be to hard to do.

If you can pull your motor apart, jetting will be cake.

[northern400ex]

Okay. But what bout one them shocker stage 2 or 3 box things that go at the front the quad?

[chronicsmoke]

Originally posted by northern400ex
Okay. But what bout one them shocker stage 2 or 3 box things that go at the front the quad?

save your money for something else, unless your CDI is fried.

The boxes will raise the rev limiter, but the 400 engine stops making power before it hits the limiter, so a rev limiter is essentially useless in most scenarios.

[northern400ex]

I think it is cause its like it studers then takes off. And plus mudding and it getting soak and wet might have done it. But when it got it in rime it want to fire and act like it wants to run but as soon as it fires it stops but I can sit there and keep pushing the throttle and and it acts like its wanting to run but it wont. :/

[northern400ex]

and if your air to fuel set srcew is srcewed all the way in. how many turns out should it be?

[trailrider894]

Originally posted by northern400ex
and if your air to fuel set srcew is srcewed all the way in. how many turns out should it be?

APROX: 2.5 Turns look use the search button to find out how to tune it.