Howdy strangers!!!!!!!
Yes I am still alive and kicking believe it or not. I know it's been a very long time but I come to y'all in need of help.
Since I bought the SV650 a few years ago the poor Magna has been neglected. Many many many months it sat and collected dust (you may throw rocks now, I totally understand). Late last year it wouldn't start and was leaking gas from the carb bank so I pulled the carbs, cleaned them as best I knew how plus replaced the O-rings around the bowls. Got everything back on and it started but it didn't seem like the front left cylinder was firing (cold exhaust pipe). Months go by (again) and I try to start it and it starts.....but gas is leaking out of the carbs....again. I royally detest working on carburetors, especially ones that you have to remove the top half of the bike to get to.
When I had them off last time I unclogged all the needles so I don't think they're clogged but whyt could it be leaking again?
I really need to sell the bike before it continues to sit in my carport and deteriorate but selling a non running bike you might as well be prepare to give it away and forget even trying to find a shop that will touch it.
Any advice? Tips? Offers to work on them for me...lol?
Any input is truly appreciated!!
Jimmy
It may be the fuel tubes in between each carb that are leaking. I now have two Magnas and my 95 purple and white one, had a leak at the fuel tubes. It only had 14K miles on it so it had done a lot of setting. For me it was pretty easy to find when the bike was running I used a flashlight and mirror to take a look. That could explain why one cylinder is running cold, maybe. No fuel?
If that's the case sometimes the o-rings will swell back up after getting wet. But mine didn't, so I just put on my backup carbs to get around the leak.
The fix involves separating the carbs which may be more than you want to do. Check out the http://www.v4market.com/. You can order a kit of o-rings for the carbs or you can order a rebuild from Billy Carr in the Canton area. A seller that used to be on V4market also makes aluminum fuel tubes to replace the plastic ones in case they've gotten brittle. I hear you can still find him on eBay.
In a few weeks or so I will attempt the carb separation and total rebuild.
And if it's not leaking at the fuel tubes then I look forward to the replies of others.
If there is a leak, it could also be Needle valves not closing off the fuel when the float says the carb is full..
If you never separate the carbs then most likely it is the needle valves.
I had a leak on #1 carb and I was able to remove the #1 bowl and pushed out the needle vavle and reinstalled the needle vavle and reassembled the bowl, without removing the carbs bank.
I haven't had to do for the others carbs so I can't say all the bowls can be removed while the carbs are on the engine.
Quote from: Gloveberg on August 20, 2016, 12:20:42 AM
Any input is truly appreciated!!
Jimmy
I can't offer technical advice, but if misery loves company, Jimmy, you'll be delighted to know I'll be undertaking my first carburetor rebuild after letting my Magna sit just a little too long with ethanol gas in it. I can't wait to tear it down, clean it up, and get it all back together so I can do it all over again! (http://oi43.tinypic.com/kamjon.jpg)
On advice from Greg C., I put a little Seafoam in the tank of each of my '96 bikes when I park them. Every ten days to two weeks, I go out, fire them up, let them idle for 10 minutes or so, rev them a bit, shut them off. Been following this routine for ~ 5 years, and it works!
Yep. A little fuel stabilizer and some running it every couple of weeks is all you need.