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Reply To: 2016 GT125R – Rough idle, accel, not charging

Mar 26, 2024 at 7:32 PM #12733

♠️ MARCEL

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Topics: 44
Replies: 2,401

🌍 Country: UK
⚡ Bike Model: GT

Hey,

Midlands to Yorkshire is a bit of trek for you to come isn’t it ? 😉

The upgrades you said are recommended yes. I would add my 2pence below to help you:

Get a multi meter -> Disconnect Fuel Sensor – > Put the meter in to max 300 or 500 ohms level (five hundred) and tell us the reading you get and i will confim if the sensor is dodgy or not. Also tell us if the tank is half full or very full
Go to halfords -> “ONLY” , i mean ONLY get this product and use it forever (Hyosung’s do not like redex)
https://www.wynns.uk.com/product/formula-gold-fuel-system-treatment/ Usually we use a full bottle on a full tank , just to make the cleaning process a bit more agressive , ride until the fuel gets low.
Allow the bottle to collect muck, dirt , etc and it will burn away at the exhaust.This is like a “temporary” soft clean of the carbs too.

Get ACF50 and PUTOLINE RACE GREASE on amazon = Make sure “anything outside the engine” that moves and gets attacked by crap being thrown by the wet tyres , grease it.

ACF50 is for the entire bike with a cloth , wipe everywhere metallic except brake discs to leave a nice layer of ACF50 anti rust treatment.

See the plugs under the oil cooler ? _ Yes , drop the oil cooler from the frame, leave pipes connected and add a little drop of ACF50 inside EVERY plug there)
Then hide the plugs with this below (it is called SUZUKI HARNESS BOOT)
You harness will thank you

ACF50 again, find any connector on the bike that’s exposed to the weather and put a little drop of acf50 inside there.
Buy another Suzuki Harness Boot to hide the stator plugs near the shock
Buy another Suzuki Harness boot to hide the indicator wires behind the rear pillion seat.

Ring FOWLERS UK BRISTOL (Genuine Suzuki Dealer, ask for exactly what i said as its used in various suzuki. They call it “Harness Boot”)

DO NOT USE WD40! – It will instantly go on fire lol. Only ACF50 should be allowed on the electric plugs/terminals.
Regulator = 100% got to go.
Stator = Test your old one first both in voltage , and also OHMS when it has been overnight cold. = before it fries the next regulator. At this rate you have been running on the battery itself , the regulator should be absolute minimum of 13.5V as per hyosung rules but ideally 14V to 15v max up to 5,o00 revs.
Test your coils = If they are retrograding or acting wishy washy , it will eat your spark plugs and will explain the boggy behaviours while running.
NGK Caps yes good investment, they rarely ever fail tbh.
If you want to be fancy , go to amazon and get 7mm thick MAGNECOR HT WIRES too (that will make a nice upgrade between a beefier coil & ngk cap)