Pointy fuel/engine issue

PS. Fuel additives are a waste of money. If they were that good, fuel manufacturers would put them in the fuel!

Originally Posted by phil24_7

It may also be worth getting someone used to the SV (maybe a forum member) who is local have a little ride of it to see if there are any obvious issues.

This is a good idea... Anyone you know from the gloucestershire area?

I've got 2 and a half years riding experience and have had this bike for over a year now... I know my rider skill has exceeded the capabilities of the suspension components (I have Hagon fork springs and 15W oil) and can feel the bike flexxing beneath me. I know what the bike is doing at anyone time but I cannot explain what has been happening lately.

There's deffinately something not right with fuelling or the engine. Idle seems to adjust itself... sometimes it's where I set it (around 1300RPM) and other times its down at 900. Also, the pistons feel like they're crashing sometimes, and from idle if I give the throttle a quick blip it sounds and feels like its hitting something. Valve clearances were adjusted 3500 miles ago. Its mainly this and the stench of fuel that has me worried. The jerkiness is mostly inconvenience but it is really putting me off my bike :/

On a slight sidenote... my bike's been burning oil for a while (put in another litre over the weekend)

Check all hoses as you may be leaking fuel. This would be causing under fuelling which could account for a few of your issues.

I haven't topped my SV up with more than a litre in 5 years (apart from servicing) so this will probably need investigating.

Regards

[Toooldtodie]

Had a problem with misfire and backfire, found it was due to a kinked rainwater drain from fuel filler which was then contaminating the fuel. Might be worth checking, dunno? As you said, the more suggestions, the more problems you can strike off the list.

[ophic]

I had a massive exhaust backfire problem, shockingly loud when coming down the revs under engine braking. It would go off like a shotgun at around 4k rpm and would make me jump out of my seat.

This was due to the dealership forgetting to re-fit the PAIR tube to the front cylinder after a valve check service.

Just mentioning as something to check as you seem to have reported the backfire in the same rev range.

Originally Posted by Toooldtodie

Had a problem with misfire and backfire, found it was due to a kinked rainwater drain from fuel filler which was then contaminating the fuel. Might be worth checking, dunno? As you said, the more suggestions, the more problems you can strike off the list.

I've never heard about the rainwater drain.... what's that all about?!

Originally Posted by ophic

I had a massive exhaust backfire problem, shockingly loud when coming down the revs under engine braking. It would go off like a shotgun at around 4k rpm and would make me jump out of my seat.

This was due to the dealership forgetting to re-fit the PAIR tube to the front cylinder after a valve check service.

Just mentioning as something to check as you seem to have reported the backfire in the same rev range.

That's probably what they did after my valve check as well then. I took it back and it sorted out that problem, but it still happens seemingly randomly (normally when I've been town riding)

Thanks for the suggestions guys !! Will checkout this drainwater thing...

Don't stress about the backfire, after market exhausts often cause this to happen and it is very unlikely to do damage unless it is happening a lot.

Regards

[ophic]

Originally Posted by phil24_7

Don't stress about the backfire, after market exhausts often cause this to happen and it is very unlikely to do damage unless it is happening a lot.

There's backfires and backfires. Mine was so loud I'd still jump even when I was expecting it. It almost made me fall off decelerating for a motorway exit once.

After doing about 200 miles today, round town and country road blasts I think i've narrowed it down to dirt getting into the engine (from either air or fuel) and the TPS being incorrectly setup.

P.S. Anyone know roughly how much I'd get for my SV650S K3 with Hagon Progressive Fork Springs, R&G crash bungs and cotton reels, R&G Taily Tidy, Restrictor kit, Meta M357T-V2 alarm/immobiliser, 6000K Xenon Headlights and sidelights??? I'm probably going to get myself a 2009 ZX6R when I turn 19

Ophic - Was more talking about BlackFlags problems.

BlackFlag - It'll be worth more with the problem sorted, so try to get to the bottom of it.

Regards