17-07-16, 05:23 PM
(This post was last modified: 09-11-23, 01:38 PM by b1k3rdude.)
hi all, i have just bought my Fazer, 3 days ago, its an 2008 ex police bike with 47k on it
i took it for its (shortened) maiden outing yesterday, and discovered that its over heating.
im a bit gutted coz i was planning a trip to the Isle of man in August, but i was wondering if this is possibly a know thing ith these bikes, with an easy fix, or is it likely to be a head gasket problem?
any help at this stage will begreatfully received
cheers
Think you need to supply more information
...does it overheat when riding open roads, or when stop starting in heavy traffic/at traffic lights, does the fan kick in when the temp reaches 100degc etc
17-07-16, 06:56 PM
(This post was last modified: 09-11-23, 01:37 PM by b1k3rdude.)
cheers for the reply Melons,
i bought it on wednesday at a police auction they didnt start it but said it was a runner, i got it home and put a battery on it and it started.
I left it running while i got my gear on and noticed steam coming from it as i was about to set off. the fan was on even i would guess it had been running 5 minutes or so?
i took it for a 2 mile ride along the dual carriageway and the air ram on the rad brought the temp down, but as soon as i got home it and had it ticking over on the drive, home the temp rose quickly
checked and topped up the header tank and the temp dropped slightly. i took it for another ride and again the temp dropped whilst riding but got up to 108 degrees before i switched it off,
Ive checked the levels again today and the header tank is still at the same level and the rad is full, there was a little gunk on the rad cap but not tons of mayo.
there is some residue in the header tank but i don't know if its definitely oil ?? thats the full story of her to date
[fixed the font size issue - bkd]
couldn't just be a thermostat could it?
17-07-16, 11:10 PM
(This post was last modified: 17-07-16, 11:12 PM by chaparral02.)
First thing I would do before stripping anything on the bike is make sure that the fins on the rad are perfectly clean as it may of had 47k of crap being throw at it... 
08 Graphite Grey FZ1 ABS..
Yoshi CF R-77 Full system, FCE, Ivans Flies, PC-V + Autotune Kit, DNA Aifilter & Airbox Mod, Speedo healer ,16T front gen1 sprocket,
Sargent front & rear seats, Fender eliminator, CA Intergated Rear Led, MRA Vario Screen , Givi mono rack & V46 topbox
Sounds like the fan isn't cutting in.
It starts working way before the bike gets warm when ticking over.
Easy fix.
Whale
On the Gas!  top
i understand that there 2 fans on these bikes
one was defo cutting in, not sure how clean the fin is but ill check and also check if there is in fact 2 and that both work,
meanwhile what temp should i be worried about, i saw mine as high as 108 on saturday on tick over
As its cheap I would also drain and replace the coolant, check the old coolant for any contamination etc.
ok so today i changed the battery as it was junk
i ran the bike up to temp and both fans kicked in at about 100 degrees C
it climbed to about 103 before droping to 93 with the fans assistance,
i took it for a 20 mile ride moitoring the temps
riding at a steady 50 mph on a dual carriageway she sat happily and constantly at 87
at the lights she rose to 93 but dropped again to 87 as i rode along.
i got to a road works section where it was 20 mph and she didn't like going slowly and rose to 97, again dropping to 87 once we were clear of the road works.
i headed home replicating the 20 mph scenario a couple of times, it always climbed and rose as mentioned above.
I got home and left her running on the driveway waiting for the fan to kick in, which it did at about 100. and dropped it to 98 before i stopped the motor.
i watched the temp for a while and it rose to 109 before dropping down steadily.
she rides fine, am i worrying about nothing? theres been no more steam.
what temperature do you guys bikes run at whilst riding and what do they get up to on tick over and just after turning off the motor?
i was wondering if the water pump may not be working but she was so steady whilst just riding along.
hope i can fix it as its a really nice bike
cheers all
My gen2 gets up to 100 degrees quite quickly in traffic, but as soon as fan cuts in or the road clears then the temp drops just as quick.
I remember sometime back some else on here had similiar problem to yours and they were advised to put some Water Wetter in to help.
(19-07-16, 12:22 AM)dame link Wrote: ok so today i changed the battery as it was junk
i ran the bike up to temp and both fans kicked in at about 100 degrees C
it climbed to about 103 before droping to 93 with the fans assistance,
i took it for a 20 mile ride moitoring the temps
riding at a steady 50 mph on a dual carriageway she sat happily and constantly at 87
at the lights she rose to 93 but dropped again to 87 as i rode along.
i got to a road works section where it was 20 mph and she didn't like going slowly and rose to 97, again dropping to 87 once we were clear of the road works.
i headed home replicating the 20 mph scenario a couple of times, it always climbed and rose as mentioned above.
I got home and left her running on the driveway waiting for the fan to kick in, which it did at about 100. and dropped it to 98 before i stopped the motor. i watched the temp for a while and it rose to 109 before dropping down steadily.
she rides fine, am i worrying about nothing? theres been no more steam.
what temperature do you guys bikes run at whilst riding and what do they get up to on tick over and just after turning off the motor?
i was wondering if the water pump may not be working but she was so steady whilst just riding along.
hope i can fix it as its a really nice bike
cheers all
Be aware the temperature will spike at upto 110 if you turn it off while it is already hot (coolant flow stops, but existing heat from the cylinder walls continues to flow into the jacket).
(19-07-16, 12:22 AM)dame link Wrote: ok so today i changed the battery as it was junk
i ran the bike up to temp and both fans kicked in at about 100 degrees C
it climbed to about 103 before droping to 93 with the fans assistance,
i took it for a 20 mile ride moitoring the temps
riding at a steady 50 mph on a dual carriageway she sat happily and constantly at 87
at the lights she rose to 93 but dropped again to 87 as i rode along.
i got to a road works section where it was 20 mph and she didn't like going slowly and rose to 97, again dropping to 87 once we were clear of the road works.
i headed home replicating the 20 mph scenario a couple of times, it always climbed and rose as mentioned above.
I got home and left her running on the driveway waiting for the fan to kick in, which it did at about 100. and dropped it to 98 before i stopped the motor.
i watched the temp for a while and it rose to 109 before dropping down steadily.
she rides fine, am i worrying about nothing? theres been no more steam.
what temperature do you guys bikes run at whilst riding and what do they get up to on tick over and just after turning off the motor?
i was wondering if the water pump may not be working but she was so steady whilst just riding along.
hope i can fix it as its a really nice bike
cheers all
Doesn't read very different to how my bike behaves. 2008 FZ1S, 15k miles, rush hour London (A406/A13 commute)
Sounds about right especially considering high ambient temperatures the last few days -approaching 29 degrees C here in Bham today!
thanks chaps, i think i have a good bike after all
Sorry to open up an old thread, but just to confirm. The temp for the fan to kick in is 100c..?
Yep. mine kicks in at 100
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