Very poor running, help! - Page 4 - SV650.org

Blapper · 05-06-17, 06:23 AM

Fingers crossed!

Viney · 07-06-17, 10:45 AM

I cant see the pictures, but it sounds like its a piece of tubing from the front carb to allow easy access for carb balancing. This can be an issue as you have found.

Its also been known for the wiring loom to rub on the rear subframe and this can cause similar issues. This is a right PITA to find. Easiset way is to Insulate tape the loom from by the seat to the back of the bike. This happened to mine many years ago and once resolved, never happened again.

As for the SV being unreliable...nah. 82K in, 17 years old used solidly for the first 12 years of its life rain, snow and shine, and its been perfect (Other than a couple of niggles that have all been said above)

08-06-17, 05:33 AM

Well, I just rode to work (50 miles) and the bike didn't miss a beat, in fact she she was running beautifully, can it really be fixed?!!

I'll try to use her tomorrow as well to make sure it isn't a fluke! It's good to hear that I seem to have a bad one and in general the reliability is good as when I need to buy another bike it will most likely be another SV, I just love the engine.

R1ffR4ff · 08-06-17, 08:06 AM

Thanks for reporting back.If all is well just keep on top of constant(But not excessive)cleaning and pre-emptive servicing.To me it's not a chore,it's a pleasure.
Motorcycles,unlike cars,are much more prone to attack from the elements so a little more care has to be taken with them but the benefits speak for themselves.The engines are superb.Properly running they are very smooth especially for a V-Twin and the power delivery is fantastically predictable IMHO.

SV650rules · 08-06-17, 08:20 AM

Quote:

Originally Posted by R1ffR4ff

Properly running they are very smooth especially for a V-Twin and the power delivery is fantastically predictable IMHO.

A 90deg V twin (or 'L' twin as some like to call it) is naturally well balanced, in fact it is the best balance of any configuration. What got V twins a bad name was Harleys with their 45deg V which is horrible and lumpy and makes the whole bike jump around.

http://www.cycleworld.com/2016/02/01...nsights#page-2

R1ffR4ff · 08-06-17, 08:25 AM

Quote:

Originally Posted by SV650rules

A 90deg V twin (or 'L' twin as some like to call it) is naturally well balanced, in fact it is the best balance of any configuration. What got V twins a bad name was Harleys with their 45deg V which is horrible and lumpy and makes the whole bike jump around.

Yes.I totally agree especially when you see some of the older Harelys shaking to bits when they idle

Blapper · 08-06-17, 11:10 AM

...And yet when Alan Dudley-Ward built my Triumph engine, it was the smoothest engine I've had and that blighter was a 360 degree twin. Just goes to show what someone who knows what they are doing can do when they hand build an engine.

10-06-17, 04:00 PM

Well, the bike completed the commute without any problems which included riding down the M3 and along the M27 in torrential rain, loving my SV again!

SV650rules · 10-06-17, 04:12 PM

Quote:

Originally Posted by volvoboy73

Well, the bike completed the commute without any problems which included riding down the M3 and along the M27 in torrential rain, loving my SV again!

Glad its running well now, what do you reckon had the most effect on the problem.

05-06-17, 06:23 AM	#31
Blapper Member Join Date: Jun 2016 Location: Rochester,Kent. Posts: 824	Re: Very poor running, help! Fingers crossed!

07-06-17, 10:45 AM	#32
Viney Member Mega Poster Join Date: Jul 2003 Location: In the shadows to the left Posts: 7,700	Re: Very poor running, help! I cant see the pictures, but it sounds like its a piece of tubing from the front carb to allow easy access for carb balancing. This can be an issue as you have found. Its also been known for the wiring loom to rub on the rear subframe and this can cause similar issues. This is a right PITA to find. Easiset way is to Insulate tape the loom from by the seat to the back of the bike. This happened to mine many years ago and once resolved, never happened again. As for the SV being unreliable...nah. 82K in, 17 years old used solidly for the first 12 years of its life rain, snow and shine, and its been perfect (Other than a couple of niggles that have all been said above)

08-06-17, 05:33 AM	#33
volvoboy73 Guest Posts: n/a	Re: Very poor running, help! Well, I just rode to work (50 miles) and the bike didn't miss a beat, in fact she she was running beautifully, can it really be fixed?!! I'll try to use her tomorrow as well to make sure it isn't a fluke! It's good to hear that I seem to have a bad one and in general the reliability is good as when I need to buy another bike it will most likely be another SV, I just love the engine.

08-06-17, 08:06 AM	#34
R1ffR4ff Member Mega Poster Join Date: Feb 2017 Location: JAMOADR(1999 Curvy) 36,000 miles Posts: 1,429	Re: Very poor running, help! Thanks for reporting back.If all is well just keep on top of constant(But not excessive)cleaning and pre-emptive servicing.To me it's not a chore,it's a pleasure. Motorcycles,unlike cars,are much more prone to attack from the elements so a little more care has to be taken with them but the benefits speak for themselves.The engines are superb.Properly running they are very smooth especially for a V-Twin and the power delivery is fantastically predictable IMHO. __________________ "Stultus est sicut stultus facit"

08-06-17, 11:10 AM	#37
Blapper Member Join Date: Jun 2016 Location: Rochester,Kent. Posts: 824	Re: Very poor running, help! ...And yet when Alan Dudley-Ward built my Triumph engine, it was the smoothest engine I've had and that blighter was a 360 degree twin. Just goes to show what someone who knows what they are doing can do when they hand build an engine.

10-06-17, 04:00 PM	#38
volvoboy73 Guest Posts: n/a	Re: Very poor running, help! Well, the bike completed the commute without any problems which included riding down the M3 and along the M27 in torrential rain, loving my SV again!

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