Suzuki SV650 Riders Forum banner

1 - 12 of 12 Posts

·
Premium Member
Joined
·
86 Posts
Discussion Starter #1
My SFV still has some issues I need to fix, i got it running post accident but found out 1 fork, handle bar and maybe the rim might be bent. Rideable but scary to ride. Which is not normally an issue since I have a spare bike, my ninja 300 which is now having some issues. Hoping someone could assist me.

https://youtu.be/n0b-8LUPogk

Main symptoms: Bike is running on 50% power with the occasion 100%. When you power it on, it turns on fine, after about a minute, RPMS drops significantly. Causes the bike to go below 1k rps and occasionally will jump 1.5k-2k (normal) rpms. Leave it long enough and it will turn off. When you do full throttle in N, the bike SLOWLY climbs its RPM scale.

Modification done to it: Exhaust only and K&N Air Filter. Nothing else. Slip on.

Issue started about 2-3 weeks ago. Bike was running great, I would notice it would idle kind of weird after the exhaust swap, idle would very slight drop but nothing that caused me to have any concerns. It wasn't until I performed a tune up on that the issue got really bad. I did an OIL change on it, I used Rotella oil as I like to do my oil changes quite frequently. I added iridium spark plugs on it. Everything worked great for about 50 miles and that's when the bike would run on 50% power. See video. I thought, OK maybe it did not like the iridium sparks plugs. I added stock spark plugs, worked just fine for about 200 miles and now I have the EXACT same issue.

I am about to take the sparks plug off again. What should I be looking for? Could my COILS be bad? The bike barely has 6k miles on it.
 

·
Premium Member
Joined
·
86 Posts
Discussion Starter #3
I am sharing 2 pictures *links below*.

I see what looks like GUNK on the coils, they look like rust and gunk in one. Is that normal? That wasn't there 2 weeks ago when I worked on it. The spark plug has about 300 miles on it and they look like they already have a few thousand miles on it.

https://drive.google.com/open?id=1J734BA82WqUhreNL_mQfYwUhaLYJ2kxy

https://drive.google.com/open?id=1JAJ-OXFW6C-yLQbFibZgTdFoMfjNWeGN

Oil or water in the spark plug wells could be shorting out your ignition.
Like maybe I put too much oil or a ruptured water gasket? Any recommendations?
 

·
Premium Member
Joined
·
1,748 Posts
Test at the header pipes as they exit the engine.

I agree. It's a straight twin, so you have two header pipes.
You could try the old hand method and see which one is
cold, or an infrared thermometer would be better.
 
1 - 12 of 12 Posts
Top