ATVConnection.com ATV Enthusiast Community

Kids Quads & Other ATV's - Ask an Expert! An area where experts in their field will answer non-general questions about your Chinese made ATV. mywifesquad, LT80, LynnEdwards and other experts will answer your questions as they have time.

Eton Viper 70 has me stumped

   
Old Apr 5, 2020 | 11:15 PM
  #1  
KingQuadRider7's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2020
Posts: 5
Likes: 0
Unhappy Eton Viper 70 has me stumped
I just rebuilt a viper 70 because the compression was low, and a rebuild kit for this quad is cheap. So I finished it, made sure I put the piston in the right way, oiled everything as I was assembling it, and it will not start. Only will it backfire out of the exhaust every once in a while while I am cranking it over. It has good spark, is full of fuel, air filter is clean, and i just cleaned the carb. Any ideas on what may be wrong?
 
Reply
0
Old Apr 6, 2020 | 09:37 AM
  #2  
LT80's Avatar
Extreme Pro Rider
LT80 Expert
20 Year Member
Liked
Joined: Mar 2001
Posts: 8,340
Likes: 33
Default
Plug getting wet?
I'd check the compression (yes I know it's new).
 
Reply
0
Old Apr 6, 2020 | 09:44 AM
  #3  
KingQuadRider7's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2020
Posts: 5
Likes: 0
Default
Originally Posted by LT80
Plug getting wet?
I'd check the compression (yes I know it's new).
Yep the plug is getting wet. I've even tried squirting fuel directly into the combustion chamber and it still only backfires. I guess I'll check the compression today and let you know.
 
Reply
0
Old Apr 6, 2020 | 12:25 PM
  #4  
KingQuadRider7's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2020
Posts: 5
Likes: 0
Default I think I found the problem

 
Reply
0
Old Apr 6, 2020 | 12:41 PM
  #5  
KingQuadRider7's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2020
Posts: 5
Likes: 0
Default
It only has 25psi of compression. What would you recommend I do.
 
Reply
0
Old Apr 6, 2020 | 07:28 PM
  #6  
LT80's Avatar
Extreme Pro Rider
LT80 Expert
20 Year Member
Liked
Joined: Mar 2001
Posts: 8,340
Likes: 33
Default
I'd get your oem cylinder bored to a oem piston.
No more Wuhan specials.

 
Reply
0
Old Apr 6, 2020 | 07:37 PM
  #7  
KingQuadRider7's Avatar
Thread Starter
|
Weekend Warrior
Joined: Apr 2020
Posts: 5
Likes: 0
Default
I am still using the oem cylinder. All i replaced was the piston, rings, and gaskets of course.
 
Reply
0

Trending Topics

Old Apr 7, 2020 | 08:45 AM
  #8  
LT80's Avatar
Extreme Pro Rider
LT80 Expert
20 Year Member
Liked
Joined: Mar 2001
Posts: 8,340
Likes: 33
Default
OK. Did you get a bigger piston and have the cylinder bored to it?
 
Reply
0
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
eton viper 70 upgrades
79hugger
Kids Quads
0
Aug 23, 2007 09:42 PM
eton schematics
glassman181
Kids Quads
18
Feb 12, 2007 06:00 PM
Back to Subforum
Kids Quads & Other ATV's - Ask an Expert!
View Next Unread
Taotao tforce ATA 110cc D/D1 shifting problem.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

Thread Tools
Search this Thread
Search this Thread:

Advanced Search

Advanced Search

All times are GMT -5. The time now is 11:03 PM.