Yamaha Discussions about Yamaha ATVs.

Engine help please (PICS!!)

Thread Tools
 
Search this Thread
 
Old Jun 11, 2002 | 10:46 PM
  #11  
binfordw's Avatar
Thread Starter
|
Pro Rider
Joined: Apr 2002
Posts: 550
Likes: 0
Default

anybody else have any ideas I should try?????
 
Reply
Old Jun 11, 2002 | 11:54 PM
  #12  
KNOWSALOT's Avatar
The Facility
Joined: Nov 2001
Posts: 4,062
Likes: 1
From: Mississippi
Default

For starter's get rid of that coil before you really mess things up. Use a 12 volt coil from a motorcycle or ATV..NOT an automobile and tractor!!!

The coil is essentially what multiplies the voltage going to your plug. Some ignition systems on cars with 12 volt systems will not function at all with a 6 volt coil, but some older models will.

The problem here is that you are putting a coil designed to put out 30,000+ volts of juice into your sparkplug. The ignition will not supply the coil with enough energy to supply that unless it's being spinned at higher RPMs.[RE: Pulling it with another quad!!!!]

I would start here. It may not be the problem, but even if it isn't.......it will be soon!!!

Good luck and let us know what comes about it.
 
Reply
Old Jun 11, 2002 | 11:57 PM
  #13  
binfordw's Avatar
Thread Starter
|
Pro Rider
Joined: Apr 2002
Posts: 550
Likes: 0
Default

Its a 6 volt system- I didn't see anything wrong with using a 6 volt coil..? But, I do agree it would be a wise Idea to try a actual coil designed for that motor, I just wonder how/where I can get one....hmm



Oh yeah- can I use a 12v coil on a 6 volt system??? Or do I HAVE to find a 6v coil for an atv..????
 
Reply
Old Jun 12, 2002 | 04:49 AM
  #14  
binfordw's Avatar
Thread Starter
|
Pro Rider
Joined: Apr 2002
Posts: 550
Likes: 0
Default

OKAY.......

I tried the coil off of our NEW 300ex (don't tell my gf! [img]i/expressions/face-icon-small-smile.gif[/img] ) - and comparing it to the coil I have on it- there isn't a noticablr difference- at least to my eyes.. SO- I went back to the original- 6 volt coil.. I then began cranking the engine with a drill(my arms are KILLING me!)- although it never started,--- It did seem to try if I covered the carb with my hand. While cranking it would not try to fire at all- and if I covered the carb with my palm, the speed would pick up like it was almost gonna start to go- but then it would slow back down again..... Any ideas people? What really ticks me off is I just know, as soon as I pullstart it about 10 feet it'll fire and run fine... GRRRR!!! Why can't I start this beeaatch by hand?!?!?!

PLEASE! MORE HELP!!!! I NEED IT!!! [img]i/expressions/face-icon-small-smile.gif[/img] [img]i/expressions/face-icon-small-smile.gif[/img]
 
Reply
Old Jun 12, 2002 | 06:31 PM
  #15  
binfordw's Avatar
Thread Starter
|
Pro Rider
Joined: Apr 2002
Posts: 550
Likes: 0
Default

bump!
 
Reply
Old Jun 14, 2002 | 05:25 PM
  #16  
binfordw's Avatar
Thread Starter
|
Pro Rider
Joined: Apr 2002
Posts: 550
Likes: 0
Default

Well,

I have found the culprit- I THINK- LOW COMPRESSION!!! (GOOD JOB Wyoduner!)

I have a good amount of blowby/high pressure in the crankcase, so I guess I'll be getting new rings/piston soon..



THANKS GUYS!!!!!
 
Reply
Old Jun 14, 2002 | 09:31 PM
  #17  
binfordw's Avatar
Thread Starter
|
Pro Rider
Joined: Apr 2002
Posts: 550
Likes: 0
Default

BTW, I got some pics up of the Go-cart, in the Kawasaki board under "NEED KAWI 160cc help!!!"


Check 'em out!
 
Reply
Old Jun 14, 2002 | 10:04 PM
  #18  
binfordw's Avatar
Thread Starter
|
Pro Rider
Joined: Apr 2002
Posts: 550
Likes: 0
Default

Okay here- I'll make it easier for you lazy ones [img]i/expressions/face-icon-small-smile.gif[/img]

Raptor Killer [img]i/expressions/face-icon-small-smile.gif[/img]

The only view you Banshees n' Raptors are gonna see!! [img]i/expressions/face-icon-small-smile.gif[/img]
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ltrmc02
Polaris
2
Jul 22, 2015 04:50 AM
ghost civic
Yamaha
6
Jul 20, 2015 12:36 PM
Johnclay
Utility ATVs
4
Jul 19, 2015 10:00 AM
KimSJoh
Polaris Ask an Expert! In fond memory of Old Polaris Tech.
14
Jul 18, 2015 07:20 PM
clsharky
Kids Quads
8
Jul 13, 2015 02:07 PM

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



All times are GMT -5. The time now is 03:22 AM.