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cold start problem please help!

Started by wolijoe, April 19, 2011, 09:54:55 PM

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wolijoe

April 19, 2011, 09:54:55 PM
I have an 84 fj600. I have a problem starting and restarting if the temp is below 70 degrees Fahrenheit. I have replaced/cleaned the coils (accel) the stator, pickup coils, AC generator brushes, resistor/rectifier, cpi, and gone through the wiring extensively. after every change i come up with the same results. please help! very lost at this point.s

sorry i dont have the 1100 but i hope u guys can help!
May you prosper in Health, Wealth, and Happiness!

wolijoe

#1
April 19, 2011, 10:08:42 PM
oh yah the battery is new and fully charged. no pop from pipe until its warm outsde and its gettin fuel...
May you prosper in Health, Wealth, and Happiness!

racerman_27410

#2
April 19, 2011, 10:37:01 PM
do you use the choke ?


mine always needs choke to start if only for a few seconds.


KOokaloo!

wolijoe

#3
April 19, 2011, 11:20:15 PM
yes i use choke and the choke works when its warm out. it doesnt seem to be a fuel problem. I know i shouldn't have but ive even turned it over while shooting ether in it. still no pop at pipe. runs perfect as long as its warm outside.
May you prosper in Health, Wealth, and Happiness!

Pat Conlon

#4
April 19, 2011, 11:54:32 PM
Quote from: wolijoe on April 19, 2011, 11:20:15 PM
yes i use choke and the choke works when its warm out. it doesnt seem to be a fuel problem....
It appears that you think you have a electrical problem...not a carb problem. I think you have a carb problem.
1) Pull the tank and look at the carbs. Cycle the choke on and off.
Are all the choke actuators working on the carbs? Full range of motion? Are your carbs clean? Choke circuit clean?
2) On the cold days when the bike won't start, pull the spark plugs. Are the plugs wet or dry? Smell gas?
1) Free Owners Manual download: https://tinyurl.com/fmsz7hk9
2) Don't store your FJ with E10 fuel https://tinyurl.com/3cjrfct5
3) Replace your old stock rubber brake lines.
4) Important items for the '84-87 FJ's:
Safety wire: https://tinyurl.com/99zp8ufh
Fuel line: https://tinyurl.com/bdff9bf3

SlowOldGuy

#5
April 20, 2011, 06:29:24 PM
I don't know anything about FJ600 carbs, but the FJ carbs have a choke circuit fuel pickup orifice in the float bowl that is easily clogged. 

When that happens the choke becomes worthless and the engine is very hard to keep running when it's cold.

DavidR.

wolijoe

#6
April 21, 2011, 07:16:31 AM
hey thanks guys for the input, I will pull the carbs and clean them thoroughly!!!

check float levels etc. luckily i have a copy of the Yamaha service book for the model.

As well as check the operation of the choke circuits.

I'll let you know the outcome.

Thanks so much!!!!!

May you all prosper in Health, Wealth, and Happiness!
May you prosper in Health, Wealth, and Happiness!
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