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#133428 - 08/01/16 03:46 PM Re: Direct me to the jetting thread? [Re: klondike300]
peejman Offline
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Registered: 06/03/13
Posts: 3181
Loc: East TN USA
Can you define "takes ages" to warm up? Warm-up time is very much a function of ambient temp. With the current 80F morning temps here, mine takes about 3 miles at 40 mph (about 8 mins) to be warmed up enough to idle happily with no choke. When the ambient temp drops to 40F, warm-up time will at least double.

The hard starting/cold bog can sometimes be helped by running the bike run for a minute or three with the petcock off before parking it (and leaving it off). Some bikes are more finicky about this than others. The leading theory is that since the carb is vented to the atmosphere, the more volatile constituents of the fuel in the bowl evaporate off leaving a less combustible mix. Closing the petcock doesn't prevent that, but it does give the bowl a shot of fresh gas when you're ready to start it again.

When I forget to close the petcock and my bike sits for a couple days, it's very unhappy when I first start it. It'll take 10-15 seconds of cranking to fire and won't take any throttle without stalling for another minute or two once it starts. If I open the bowl drain and let a bit of gas run through, it starts and runs much easier.
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This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#133431 - 08/01/16 04:10 PM Re: Direct me to the jetting thread? [Re: klondike300]
UKbri Offline
Junior Member

Registered: 06/23/16
Posts: 19
Loc: Black Hills SD
Its about 90f here and the bike is unridable for 4 or 5 minutes. I have to let it just idle and warm up before I can go any where or it will just bog down when I give it throttle. I do shut the petcock off when i park it but haven't let it run with it off before, I can give that a go.

PS, is there guide in the forum to measuring and adjusting the carb float specs?


Edited by UKbri (08/01/16 04:12 PM)

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#133435 - 08/01/16 08:08 PM Re: Direct me to the jetting thread? [Re: klondike300]
peejman Offline
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Registered: 06/03/13
Posts: 3181
Loc: East TN USA
Hmmmm... shouldn't be that cold natured in hot weather. Are you sure the choke is functioning properly? The idle should be quite high almost immediately after starting with the choke on full.

Setting the float is pretty simple, other than having to remove the carb to do it. There's a pic a few posts down this thread...

http://www.xt225.com/forums/ubbthreads.php?ubb=showflat&Number=132062
_________________________
This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#133438 - 08/01/16 08:19 PM Re: Direct me to the jetting thread? [Re: peejman]
alexd Offline
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Registered: 09/23/07
Posts: 5915
Loc: Illinois, USA

+1

I ALWAYS use the full choke when starting a cold bike, either at Sea Level or in the mountains. And, if everything is running correctly when fully warmed up, the cold bike should not require ANY throttle when starting. Once it pops to life though, I pulse it, and slowly push off the choke as it warms up.

A dead cold bike when immediately started will almost always stall if you try to ride it and open the throttle suddenly...this is completely normal with a carbed bike...much less so with fuel injection.

Alexd
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(one) 2006 XT225, (two) 2005 XT225, 2006 FZ1

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#133441 - 08/01/16 09:26 PM Re: Direct me to the jetting thread? [Re: klondike300]
UKbri Offline
Junior Member

Registered: 06/23/16
Posts: 19
Loc: Black Hills SD
OK, I think I'll change up to a 127.5, use better fuel, check the float and check the choke operation, then go from there.
Cheers all

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#133445 - 08/01/16 10:46 PM Re: Direct me to the jetting thread? [Re: UKbri]
alexd Offline
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Registered: 09/23/07
Posts: 5915
Loc: Illinois, USA

Remember to allow the bike to fully warm up (drive it for 15 minutes) before setting the idle speed. And, in your experiments, be sure to NOT crimp or otherwise compromise the choke cable.

An in-line fuel filter is useful. Many use the Visifilter with 1/4" spigot size. Costs less than $5.00

Alexd
_________________________
(one) 2006 XT225, (two) 2005 XT225, 2006 FZ1

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#144538 - 02/27/19 04:22 AM Re: Direct me to the jetting thread? [Re: klondike300]
UKbri Offline
Junior Member

Registered: 06/23/16
Posts: 19
Loc: Black Hills SD
Dragging up an old thread here as I've sold the bike and went travelling for ages.
The problem I had in this instance was the plastic choke collar that screws into the carb. It looked OK at first glance, but once I took it out and squeezed it, it fell apart like an old white crusty dog turd. It had a hairline crack in it that was sucking in air. I replaced it with an alloy one and the bike was instantly transformed and went like a train.
In short, if you have a plastic choke collar, just replace it for peace of mind. Easy and cheap job. Hope this helps some one.

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#144540 - 02/27/19 12:32 PM Re: Direct me to the jetting thread? [Re: UKbri]
peejman Offline
Platinum Member
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Registered: 06/03/13
Posts: 3181
Loc: East TN USA
Originally Posted By: UKbri
Dragging up an old thread here as I've sold the bike and went travelling for ages.
The problem I had in this instance was the plastic choke collar that screws into the carb. It looked OK at first glance, but once I took it out and squeezed it, it fell apart like an old white crusty dog turd. It had a hairline crack in it that was sucking in air. I replaced it with an alloy one and the bike was instantly transformed and went like a train.
In short, if you have a plastic choke collar, just replace it for peace of mind. Easy and cheap job. Hope this helps some one.


Where did you find the metal piece?
_________________________
This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#144541 - 02/27/19 05:26 PM Re: Direct me to the jetting thread? [Re: klondike300]
UKbri Offline
Junior Member

Registered: 06/23/16
Posts: 19
Loc: Black Hills SD

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#144547 - 02/28/19 02:14 PM Re: Direct me to the jetting thread? [Re: klondike300]
peejman Offline
Platinum Member
*****

Registered: 06/03/13
Posts: 3181
Loc: East TN USA
Cool.
_________________________
This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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