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Destruktor77
24-03-12, 02:42 PM
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.
Joe Marcon
25-03-12, 12:48 AM
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
monkey
25-03-12, 02:54 AM
Swapping bits round, if you can, between cylinders will help you find the problem part.
Sid Squid
25-03-12, 10:01 AM
Swapping bits round, if you can, between cylinders will help you find the problem part.
The man speaks sense.
Destruktor77
25-03-12, 11:16 AM
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?
Destruktor77
25-03-12, 12:50 PM
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?
Destruktor77
03-04-12, 06:46 PM
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?
monkey
03-04-12, 07:18 PM
Maybe start checking the inlet rubbers and hoses for splits.
Destruktor77
03-04-12, 07:26 PM
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.
monkey
03-04-12, 07:28 PM
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.
Destruktor77
04-04-12, 06:01 PM
Okay, just did the WD40 round all the inlets and any fuel/feeder lines I could target.

No change in the engine behavior. I guess that rules out any obvious leaks but will get a better test once more thing come off.