Cold weather Samurai problem....can ya help??? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 10-17-2002, 05:28 PM Thread Starter
 
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Cold weather Samurai problem....can ya help???

Here is the deal....Seems like every year around this time when the temp outside is around 40 or so in the mornings my Zuk will give me a world of troubles.I drive about 25 miles to work and a few days a week when the temp is cool my Zuk will start loosing power and flooding itself out about half way to work (seems like about the same place when it does it + or - a mile or two).Usually it will get so bad my Zuk will die and I have to pull over keep messing with it until I get it started and rev the $hit out of it and it will smoke and carry on for a bit then will fix itself for awhile...but sometimes it wont and I have to limp it into work.Funny thing is that it just happens in the morning,drives fine in the afternoon.Any ideas what it could be? I recently put another stock carb on it and thought it might cure my problem,but this morning it did it again with the other carb....so guess carb isnt the culprit.I am thinking on the line of something electrical,since I have my headlights on in the morning and heater going full blast cause it is cold or also thought it could maybe have something to do with running a constant speed for awhile(around 55-60).But I can drive it around some at nite and it does fine.It has been doing this for the past 2-3 years now,then all of a sudden it will stop and be fine for awhile....then without warning it will do it again(usually on the mornings I am running late for work to start with [img]images/graemlins/crazy.gif[/img] )
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post #2 of (permalink) Old 10-17-2002, 05:35 PM
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Re: Cold weather Samurai problem....can ya help???

Carb icing might be something to look into....
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post #3 of (permalink) Old 10-17-2002, 05:40 PM Thread Starter
 
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Re: Cold weather Samurai problem....can ya help???

Would 40 degrees be enuff to freeze up my carb?? Wouldnt think it would.

I have a brand new Weber I am going to put on as soon as I get time....this may stop my headaches by getting rid of all the sensors and crap that is on the stock carb.
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post #4 of (permalink) Old 10-17-2002, 07:21 PM
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Re: Cold weather Samurai problem....can ya help???

Make certain the preheater hose is hooked up to the air cleaner, and the valve that controls it works .
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post #5 of (permalink) Old 10-17-2002, 07:23 PM
 
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Re: Cold weather Samurai problem....can ya help???

That's only 8 degrees above freezing...

The velocity of the air compounded by the low pressure of the (place cool word that means area where fuel is siphoned into the air stream ->here<-) could easily put you in the freezing range.

Do you have the warm air tube that connects to the exhaust manifold?

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post #6 of (permalink) Old 10-17-2002, 07:43 PM
 
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Re: Cold weather Samurai problem....can ya help???

Carb icing can happen any time due to heat exchange. Check your choke plate for sticking,
that could also do it, espesially if its running super rich.
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post #7 of (permalink) Old 10-17-2002, 08:15 PM Thread Starter
 
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Re: Cold weather Samurai problem....can ya help???

I have warm air tube on it... and when I pull the vacuum hose off I can hear the valve opening and closing,so it should be working right.
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post #8 of (permalink) Old 10-17-2002, 09:04 PM
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Re: Cold weather Samurai problem....can ya help???

Carb icing is a process of change in temperature and humidity. when you're having the problem get out and look for the tell tale signs,
ice on the carb or intake runners
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