Suzuki2Strokes.com

Sundial Moto Sports

Suzuki Two-Stroke Message Board
Suzuki2Strokes.com
It is currently Tue Jan 16, 2018 3:42 am

All times are UTC - 6 hours




Post new topic Reply to topic  [ 26 posts ]  Go to page Previous  1, 2
Author Message
 Post subject: Re: no spark 1970 T350
PostPosted: Mon Jan 08, 2018 12:41 pm 
Offline
To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 488
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
akendall1966 wrote:
When you measured the coils, this was disconnected from the rest of the wiring no plug caps? This shouldn't really effect the measurement of the secondary which if your measurement are true indicate the coils are shorted internally

Just in case your not aware if you replace the coils and do go aftermarket remember coils for CDI are different to point/tci ignition make sure you get the correct type as the primary and secondary windings are different. CDI coils will likely burn out the primary in a points system particularly, sat ignition on not running where the engine has come to rest with the points closed.

I agree.
In addition; have you checked the points gaps?


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Tue Jan 09, 2018 5:55 pm 
Offline
Still in the Driveway

Joined: Sun Sep 03, 2017 7:03 am
Posts: 4
Country: USA
Bikes owned: 1970 T350 Now; TS250, GT380, TM400 Past
As far as I know, stock 1970 T350 does not have a kill switch. Wish it did as I could have used one a few times on mine.


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Fri Jan 12, 2018 3:31 pm 
Offline
To the on ramp

Joined: Sat Jan 29, 2011 10:51 pm
Posts: 204
Location: New Zealand
your plugs should be B-77HC.if not get some,if so more than likely coils.no kill switch on these.

_________________
CB360
T350J
T250R (in progress)(still)


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Fri Jan 12, 2018 3:33 pm 
Offline
To the on ramp

Joined: Sat Jan 29, 2011 10:51 pm
Posts: 204
Location: New Zealand
saying that though, l would get new points before coils with correct plugs.

_________________
CB360
T350J
T250R (in progress)(still)


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Sat Jan 13, 2018 5:05 pm 
Offline
Still in the Driveway
User avatar

Joined: Thu Dec 28, 2017 9:22 am
Posts: 8
Country: United States
Bikes owned: 1970 Suzuki T350
I decided to hook everything back up and stick a small flat head screwdriver on the points just to see what happens. When the points close, with the screwdriver touching them, the spark plug will spark and I get a small spark at the point. It does this when I tried it with both points. This model does not have a kill switch.
Any suggestions or :idea: 's for this?

Thanks again for all the post! :D


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Sun Jan 14, 2018 6:31 am 
Offline
Expert racer

Joined: Mon Dec 01, 2008 2:52 am
Posts: 1065
Location: Manchester, UK
Let me get that straight - when the points are CLOSED, and you touch a screwdriver to them, you get a spark at the plug?

Sounds like you've got the insulating washers in the wrong place where the low-tension wires connect to the points. This would mean that the entire breaker point assembly (both fixed and moving points) is getting 12V all the time the ignition is on, so the breakers aren't actually breaking the LT voltage when they open. You're getting a spark when you touch the points with the screwdriver because you're earthing the points.

Check the top set of points in this picture, with the green & black wires, and you'll see how they should be connected, with the insulating washer placed directly either side of the point mounting:

http://www.powerdynamo.biz/deu/systems/ ... points.jpg

_________________
1976 GT380 - wounded by me, and sold on
2006 SV650S. It's got cams, and valves, and stuff


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Sun Jan 14, 2018 12:57 pm 
Offline
Still in the Driveway
User avatar

Joined: Thu Dec 28, 2017 9:22 am
Posts: 8
Country: United States
Bikes owned: 1970 Suzuki T350
Thanks Craig380:

I attached a picture of my points and the wiring is black and white only on mine? Actually the plugs will spark anytime(Ignition On) when I have a flat head screwdriver touching them. Should I take any of this apart and clean it?
Attachment:
File comment: Points and wiring
t350points1.JPG
t350points1.JPG [ 41.3 KiB | Viewed 44 times ]


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Sun Jan 14, 2018 3:12 pm 
Offline
To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 488
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
Craig could be right.
I suggest you replace the points and make sure you use new and correctly installed insulators (your current ones might be damaged). Set the gap carefully then make sure the points contacts are clean. Clean them using a clean cotton cloth only (no sand paper!). Put a small dab of grease on the points cam. With a new set of plugs too, you should find the bike will run (set the plug gap correctly and make sure that the plug leads are on the correct cylinders).


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Mon Jan 15, 2018 1:54 am 
Offline
Expert racer

Joined: Mon Dec 01, 2008 2:52 am
Posts: 1065
Location: Manchester, UK
Russ, looking closely at your pic, I can only see ONE wire connected to each point. Maybe it's the picture that's playing tricks, but that's how it looks - it seems like the wiring to the points is wrong.

Each point needs to have TWO wires connected to it: the 12V low-tension feed (either the black or white wire) which hooks to the points, AND the wire from one of the condensers. Look at the pic I posted above and you'll see exactly what I mean - each set of points has the 12V low tension wire, and the wire from a condenser attached to it.

If the condensers are not connected you'll only get a weak spark at the plug at best, and usually no spark at all.

I don't know whether the black wire feeds the points for the left cylinder and the white wire the right, or vice-versa, but you can check this. Those condensers look very old too, try first wiring them in just to see if you can get it running but I would replace them. Don't forget to connect the wires so they are separated from the points by the insulating washer.

_________________
1976 GT380 - wounded by me, and sold on
2006 SV650S. It's got cams, and valves, and stuff


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Mon Jan 15, 2018 10:01 am 
Offline
Still in the Driveway
User avatar

Joined: Thu Dec 28, 2017 9:22 am
Posts: 8
Country: United States
Bikes owned: 1970 Suzuki T350
I got sparks on plugs :D I adjusted points but I am not sure I did it correctly. It pops and makes strange noises when trying to start.


Top
 Profile  
 
 Post subject: Re: no spark 1970 T350
PostPosted: Mon Jan 15, 2018 2:52 pm 
Offline
To the on ramp

Joined: Wed Jul 10, 2013 12:04 pm
Posts: 488
Country: England, UK
Bikes owned: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S
Swap the plug leads over see if it makes any difference. Common mistake is checking plugs then putting the leads back in the wrong order (causes the exact symptoms you just mentioned). I'm not saying for sure this is your problem, but I would at least check this first.
Incidentally, setting points is simple. If you don't know the exact manufacturers setting, set them at 0.3-0.35mm gap using a feeler guage. Do this when the points are at maximum lift. Then rotate engine and do the same again on the other set.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 26 posts ]  Go to page Previous  1, 2

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 36 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group
Sundial Moto Sports forum © by Eric F. Kalamaja
Suzuki2Strokes.com