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+--- Forum: FZS600 Fazer (https://foc-u.co.uk/mybb/forumdisplay.php?fid=78)
+--- Thread: Rough warm up? (/showthread.php?tid=62200)
Re: Rough warm up? - darrsi - 06-03-13
I've no doubt that those drain screws are made of cheese, so i presume that's why it was suggested not to overtighten them, not that i'd do such a terrible thing?
Re: Rough warm up? - red98 - 06-03-13
(06-03-13, 11:20 AM)simonm link Wrote: [quote author=red98 link=topic=6574.msg61814#msg61814 date=1362561215]
my monies still on pilot jets.....worth draining carbs first though
I wouldn't have thought it was the pilot jets. According to this:http://www.dansmc.com/carbs2.htm it would be the pilot/idle jet. But since it goes away when it's warm it would be unlikely?
I'd have thought it would be a choke/richness problem but anything where you could get condensation going from cold to hot and/or water would be a fair bet too.
please let me know if you want any more uneducated guesswork, I'm always up for talking knowledgeably about things I'm Ignorant of :-)
[/quote]
mmmmmm....yes good point about starting ok when warm
pilot/idle jets work on tick over and then the main jets take over.......so cold starting problem and no recent changes to bike,i can see why you think contaminated fuel.....very interested to see the outcome of this one 
Re: Rough warm up? - unfazed - 08-03-13
Don't forget to drain the fuel filter also.
Re: Rough warm up? - darrsi - 08-03-13
I gave the bike a drink yesterday, i put some 99% Isopropyl Alcohol in the fuel tank, if there is any water in the tank it should bind with it then get burnt off as fuel. :b
I'll still drain it on Saturday morning anyway just in case there's a pool of it in the bottom of the carbs, but the I.A. can be pretty effective on it's own.
Obviously i will need to have the bike sitting still over night to try that out so it can settle properly.
Re: Rough warm up? - unfazed - 08-03-13
It will not matter a lot when you drain, but to determine if it is the problem then draining prior to starting is best.
Not a great fan of using Isopropyl as it can damage some types of fuel lines. I prefer to use the old fashioned way of draining then I know the water is gone.
Re: Rough warm up? - darrsi - 08-03-13
I'll be so happy if i can wring some water out of the carbs, firstly 'cos it's a simple fix that i didn't know about, and secondly 'cos it means there was a problem that wasn't there before and i wasn't dreaming that my bike has never needed choke in the mornings before!
Re: Rough warm up? - darrsi - 08-03-13
Another interesting update, this morning i started the bike with absolutely no trouble whatsoever!
One blip of the throttle and it ticked over happily, no choke needed at all.
About 90 seconds later i was off down the road expecting it to get throaty again for the first mile or so......but.....nothing!
Smooth as you like, no issues at all as if i'd been riding it all day!
It's fairly mild outside but was foggy, but i'm starting to think the alcohol i put in the tank on Wednesday has done it's job and helped burn off any water that may have been in the tank?
As i said earlier i'll still drain the bowls in the morning just so i can say it's been done but at the moment it appears to be back to normal :woot
Re: Rough warm up? - richfzs - 08-03-13
:woot :woot
Does ipa also bind activ8 to itself as well? :pokefun
Sent from my HTC Desire S using Tapatalk 2
Re: Rough warm up? - packie - 08-03-13
(08-03-13, 10:02 AM)darrsi link Wrote: but i'm starting to think the alcohol i put in the tank on Wednesday has done it's job and helped burn off any water that may have been in the tank?
...it appears so!!.........Kudos to Unfazed for pointing to the problem.
Re: Rough warm up? - darrsi - 08-03-13
(08-03-13, 10:08 AM)richfzs link Wrote: :woot :wootHa ha, i knew i could rely on someone to bring that up! :lol
Does ipa also bind activ8 to itself as well? :pokefun
Sent from my HTC Desire S using Tapatalk 2
Nothing can grab hold of Activ8, it's far too much of a slippery customer!
Re: Rough warm up? - darrsi - 08-03-13
(08-03-13, 10:16 AM)packie link Wrote: [quote author=darrsi link=topic=6574.msg62243#msg62243 date=1362733371]
but i'm starting to think the alcohol i put in the tank on Wednesday has done it's job and helped burn off any water that may have been in the tank?
...it appears so!!.........Kudos to Unfazed for pointing to the problem.
[/quote]
It's only fair to take the bike out for a drink every now and then. :b
Re: Rough warm up? - darrsi - 09-03-13
Just a quick update, i just drained the carbs and there didn't appear to be anything sinister in the fuel, it was just pure petrol that came out.
The bike also started on the button again without any gargling so i reckon that the Isopropyl may have had the desired effect and mixed with any moisture and burnt it off.
Thanks for all the advice as always, me and the bike are happy again :woot