400EX Jetting Suggestions

Reply Subscribe

Thread Tools

Search this Thread

Sep 22, 2000 | 11:15 AM

Wicked400EX

Thread Starter

Trailblazer

Joined: Sep 2000

Posts: 34

Likes: 0

you cannot shotgun duplicate posts in multiple forums. Your original post remains.
ATVBBS

Sep 22, 2000 | 11:49 AM

426ex

Pro Rider

Joined: Apr 2000

Posts: 231

Likes: 0

152 or a 155 main jet will do fine.
as you probaly no always check your plug for a reading after any changes you do!

Sep 22, 2000 | 01:07 PM

garyc660R

Elite Pro Rider

Joined: Jan 2000

Posts: 6,996

Likes: 0

Is your header pipe still glowing? Your previous jetting seemed pretty close...Have you checked for intake/head gasket leaks?

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

05 400ex

XxS0ccerstarxX

Honda

Oct 18, 2021 10:03 PM

2005 400ex jetting question

Espo720

Technical and How-To Articles

Aug 19, 2015 02:44 PM

350 warrior compression

manuelrivera

Yamaha

Aug 8, 2015 04:34 PM

05 400ex

XxS0ccerstarxX

General Chat

Aug 7, 2015 06:18 PM

Carb rebuild

GregM

Polaris

Jul 29, 2015 09:41 PM