Reply To: Miss and backfire under 5k only after engine warms up – 2009 GT650R
The regulator look like we posted it to him, did he buy it from us or someplace else ? Electrosport is OK for stators.
But like with any brand , the stators can still die (the pulse sensor itself) could just have been one of the rare bad batches made , it happens.
Coils = Thousands are made every day from many outsourcing companies for Suzuki & Hyosung.
Go on your own local ebay and get “SV650 1999” (that year only) GENUINE coil, it will have a triangle logo on it and it is the SAME coil used on Hyosung GT650 early models. Mitsubishi Japan is the company that made identical coils for SV650 and GT650 , SV650 is just a more common bike. Make sure the seller can verify readings.
If not, OEM Korea would be best (but then again Hyosung themselves get those coils from Mitsubishi Japan, it’s the same coil)
There is A LOT of bad clones of those coils made from china sweatshops , so you will either have a good one or bad one (or a good one that gets haywire after a while just like the “netrider AU” forum post was saying)
I’d advise:
– Get Genuine 1999 SV650 or GT650 coils that are verified working, they will last a long time as long as the bike or the rain/water doesn’t iritate them
– Go to Amazon and get MAGNECOR “HT WIRES” (they are very good)
– Caps , try the OEM SV ones but your current caps seem OK. Just as long as they are not visually cracked or showing signs of “heat fatigue” which kills them too (The hole is deep and it gets very hot there)
– Fresh CR8E plugs again (I know, I know, but if you have sparking issues , the plugs will get shot again, they need a stable 10,000V coming from the ignition system)
– Get that starter relay solenoid and CHECK your flywheel ==> Go behind and make sure there is no odd damage (if the bike tries to start and you hear “thud thud” , investigate the whole sprag-clutch system behind the flywheel or you may have a hydrolock in the engine , change oil and fix the carb (jammed floats or float-seats leaking fuel past their own internal seal causing fuel to slowly drip out of the carb in to the cylinders)
Around 22,000 ohms is generally what hyosung wants at the HT point , the “terminals/lead pins” should be very very low (4 ohms ish is about the sweet spot)