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My '78 CX500 is extremely hard to start on cold mornings. More often than not, I wind up draining the battery trying to start it. Choke on or off, it's the same thing. I don't have this problem during the summer. Any help you guys can give me would be greatly appreciated. Thanks.
 

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My '78 CX500 is extremely hard to start on cold mornings. More often than not, I wind up draining the battery trying to start it. Choke on or off, it's the same thing. I don't have this problem during the summer. Any help you guys can give me would be greatly appreciated. Thanks.


Easy answer, get a bigger battery.
 

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I'd guess either carb related or maybe your battery's just not fully charged?  How clean are your carbs?  A set of dirty one's will still give you decent performance when it's warm, but a weak or old battery will do the same thing.
 

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Clean the carbs out. When the low jet mixture circuit gets restricted it makes it very very hard to start when it's cold.
 

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How cold are we talking? I live in Fargo,ND. I usually ride up through november hear. My 79 is hard to start on 40 degree or less mornings so I keep the left side cover off at night and throw jumper cable between the bike and my truck battery. The truck isn't running. More than enough crancking amps to get it started.
 

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Full carb service and Starter motor,



Carbs,

http://globalcxglvtwins.hostingdelivered.com/viewforum.php?f=19&sid=27af167f483d7158141e5587e2728e07



Starter motor,



http://globalcxglvtwins.hostingdelivered.com/viewtopic.php?f=8&t=208



Both my CXs will start quite easily with a little choke at least down to

minus 5 Deg C.

23 Fahrenheit



Batteries properly charged and topped up,all contacts good,serviced starter motor,carbs and serviced Starter button,throttle assemblies,good plugs and coils and plug caps.



In Summer neither need any choke.
 

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On a CDI bike its all done with magnets and wire

so a good cranking speed gives a good spark.

If your bikes fine in higher ambient temperatures it may be the

quality of the battery or its getting tired.

This is the time of year when many batteries which coped

Ok in the summer struggle when temperatures drop.



If you have a car or truck you could try booster cables

and if it starts better using these, then this would suggest the battery is tired

All this depends on the battery getting fully charged in use and good connections and

starter motor of course so a check over would be advised.
 

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i used to have the same problem until i cleaned the carbs changed the spark plugs to iridium plugs and sense then the start up time is great maybe one crank and its running so i would clean carbs and change plugs and 3 months ago i got a new (to me) gel battery so i would look into all the advise from the guys on here
 
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