Forums 🚥 PiT STOP 🔧 Hyosung Technical Help white smoke
- This topic has 7 replies, 2 voices, and was last updated 3 years ago by
Raymond.
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May 8, 2022 at 4:26 PM #7607
Hi on my Hyosung GV650 i have some white smoke coming from my engine block near the coolant refil but my coolant level seems fine any 1 know what this could be?
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May 8, 2022 at 10:09 PM #7611
is it possible to get a picture with your hand pointing to the area where the smoke is coming from exactly please?
It could help narrow down what the issue either internally or externally, could be something as simple as a hose leaking a little through its clamps or something odd but i do hope its nothing to do with the cylinder heads as coolant ofcourse flows around it.White smoke usually means coolant either out of the tail pipe or near the engine, blue-ish smoke is piston rings, so have a good inspection of that too.
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May 9, 2022 at 10:17 AM #7612
I’ll give it a shot but lol but I think I read the wrong gauge for coolant the reserve coolant tank is empty any idea which coolant to get I went to halfords and they are useless they don’t know which coolant can be used with aluminium tank
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May 9, 2022 at 10:22 AM #7614

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May 9, 2022 at 10:29 PM #7621
I’ll give it a shot but lol but I think I read the wrong gauge for coolant the reserve coolant tank is empty any idea which coolant to get I went to halfords and they are useless they don’t know which coolant can be used with aluminium tank
I like Motul Factory Line Motorcycle Coolant, and it is usually already mixed at factory, so you pretty much have to just fill it via radiator (check level) or the reservoir unit.
The picture you uploaded, is that the rear or front cylinder head ? Have a feeling picture is upside down so i am not able to tell. And is the smoke coming through the exhaust header (where pipe joins to the engine block) ?
or is there a leak somewhere externally (have a short ride down the street, then let it idle, look for something wet that may drip on to the hot exhaust pipe causing the puff of smoke. Just be cautious and no need to open anything until the engine is 100% cold, as coolant can easily burst out burning if you open either radiator or reserve caps
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May 10, 2022 at 1:14 PM #7629
The pic is a little off centre but it’s where the exhaust connects just above coolant refill there is white smoke coming out the exhaust aswell
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May 10, 2022 at 5:10 PM #7631
it may be a shot in the dark, what if you remove the exhaust pipes and replace the exhaust gaskets inside the cylinder head and tighten exhaust bolts to 15 ft lbs max , then see if the smoke stops coming out of the cylinder head.
Then we check again that the smoke is likely a drip from the coolant bottle somewhere, cause we can’t have smoke straight out of the exhaust hole , the exhaust valves would be directly behind that. Then i’d hate to assume we have head gasket failure in the piston chamber where coolant has leaked through internally.
Please also look inside your radiator for anything that looks like “brown milk” etc or strange debris floating.
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May 13, 2022 at 9:42 AM #7655
I’ve ordered a gasket head seal from this site so I can give it a change and I’m gonna change the oil see if that lot helps
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