Rear Cylinder Fireing Problem

Okay so I've noticed that my 2000 Sv650 sounded like a single cylinder bike. But it's still pretty quick. gets to about 90 mph then takes a lot to get any more.

I took the cap off the spark plugs front, and then back. It runs on the front okay but the rear has problems revving and doesn't idle.

I checked the spark plug, only the tiniest spark, got a new plug same problem. Is it likely to be a new coil then. I cleaned all the contacts and everything but no luck there.

If its anything to do with plug cap i have 1 u can have for £4 incuding post lol . Bought an NGK 1 and sent me 1 for rear cylinder

Swapping bits round, if you can, between cylinders will help you find the problem part.

[Sid Squid]

Originally Posted by monkey

Swapping bits round, if you can, between cylinders will help you find the problem part.

The man speaks sense.

Originally Posted by monkey

Swapping bits round, if you can, between cylinders will help you find the problem part.

That's what I usually do, but what else could be causing the problem except the Coil and cap? Can the front and rear be swapped around?

Right, so I just switched the Caps round from front and back. Same ol' problem no/very little spark. Put back together front still sparks good.

Can only assume it's the rear coil then? Any other factors?

Got a new ignition coil. New spark plugs in. Tested sparks front and back again and looking pretty perfect. Great sparks all round.

But same problem. Apart from being smoother on the throttle that's it.

Still sounds like a single. isn't as powerfull as it should be. Petrol is getting to both cylinders I just have no idea?

Anybody?

Maybe start checking the inlet rubbers and hoses for splits.

I was thinking of taking apart the carbs and giving the Jets and Bowls a clean. So I guess I'll see any splits etc while I'm in there.

Not necessarily. The tiniest split or leak can cause problems.

I reckon that and carbs are your next step. Might be out of balance too.