Question about 1986 Yamaha XJ 700 X Maxim

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The bike sat for a long time. When trying to start you have to choke the **** out of it, and once running it will not run without the choke on. Also the power is terrible at low RPM's? Is this a carb shaft seal issue?

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Take off the petcock valve and look at the fuel filterinside the tank and buy a carb kit the gas turns to varnish and clogseverything up

Posted on Apr 10, 2011

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1 Answer

Will not run without manuely chocking


Sounds like the unit has sat, and carb gum, Try draining the carb bowl and re-filling. There is a screw at the base of the bowl. Also make sure when cold choke is closed. And it opens fully after 3 minutes. Check battery voltage on choke coil.

Dec 17, 2013 | Onan 5500 Microquiet Generator

1 Answer

I have a 1991 honda cbr 600, she'll start fine with the choke fully on. As she warms I let the choke off slightly and keep her at about 1,500rpm. Then she'll start steadily cutting out. It doesn't matter...


You didn't say whether the bike has been sitting (without being run) for any amount of time. If it has, I'd say that either your pilot jets are plugged, or you float needle is blocked/restricted; thus not allowing it to refill the carb bowls as fast as the fuel is being drawn from them by the engine. The later though usually only effects 1 maybe 2 carbs. Not usually all 4. the plugged pilots jets are more likely.
So how long has the bike sat without running? (And "It was running before I parked it" doesn't apply here) :-)
Good luck

Mar 11, 2011 | Honda CBR 600 F(1)H Motorcycles

1 Answer

My 1982 Honda v45 will not run without the choke on. It sat in the garage for years with old fuel in the tank. We drained the fuel, changed all the oils, etc and completely REBUILT all 4 carburetors. I...


The slow jets and adjoining passageways are still dirty. As painful as it may be , take the carbs off and clean the slow circuit again or it will never idle. Double check the fuel pump is working properly and the fuel filter is not plugged. One time it took me four cleanings to get all four carbs working on a Suzuki that sat for five years. Also make sure none of the carburetor boots have developed rips from age.

Aug 31, 2010 | 1982 Honda VF 750 S

1 Answer

My cousin rode my yz 125 down the block without pulling the choke up it cut off on him up the block he came back with the bike i tried to start it up and the engine wont begin to run at all this was the...


I don't think running the choke n had anything to do with the bike not starting again. I catch myself miles from home and find the choke still on. Just makes it run a little rich. If anything I would check the plug(s), they might have been fouled by the choke, just clean them up and see what happens. Check it out.

Jun 18, 2010 | 2003 Yamaha YZ 125

1 Answer

2002 Big Bear 400. Dies after a few seconds upon startup


sounds to me the valves are not properly adjusted,..like their to tight,...i had run into this in a japanese car once,...check it out and let me know,.....cracklin joe

Jan 10, 2010 | 2002 Yamaha SR 400

1 Answer

Yamaha TW 200 starts but won't run.


If the bike has sat for a long period of time without being run - the gas that is sitting in the carb(s) will shellac.. Then the carb(s) would need to be cleaned and "rebuilt"..

Sep 14, 2009 | 2001 Yamaha TW 200

1 Answer

My 2005 TT-R 125 has sat for a while.....


Your carb is gummed up if you let it sit for a while. It is not getting any gas through it is why once the starter fluid runs out it quits. Take the carb of and clean thoroughly. I do me take apart and clean clean clean.

Mar 08, 2009 | 2005 Yamaha TT-R 125 L

2 Answers

Wont accelarate


you didnt say if the bike sat up for a while, if it has you have stopped up carbs the bike will run with the choke on but shut off when the choke is off says no fuel going thru the low speed jets clean them by taking the float bowls off and blowing them out with high pressure air

Dec 31, 2008 | 1997 Yamaha YZF 600 R thunder cat

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