Question about 1991 Honda ST 1100 Pan European
1991 Honda ST1100 cranks only with full chock on. The moment I touch the throttle or the choke it dies...???? (Bike has been sitting for about a year.) I was able to run it yesterday but it would not idle and spit and spurtered. Today it will idle with the chock on only. If I hit the throttle or release the choke it will die.
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Posted on Jan 02, 2017
SOURCE: Won,t stay cranked
try the bad gas route first by draining the tank and replacing it with fresh fuel.
if no joy, then i would focus on gummed up carbs. remove the carbs from the bike, then remove the float bowls from the carbs and take a look. my guess if the jets are clogged and/or lots of varnish on the float and bottom of the bowl. clean it all out including all of the orfices on the jets (main & pilot) and you should be a-ok.
Posted on Mar 13, 2009
Carbs gummed up. Need a serious cleaning or a full ruubers replacement/rebuild kit. Gas turns to gummy when left stting in the fuel bowls.
Use a couple of cans of Sea Foam.. best stuff in the world.
Posted on Mar 20, 2009
I have an 01, and it started doing this. I don't remember the circumstances. It's just dirty in the carb I think.
1) Check for water in the gas.
2) Turn off the petcock and drain the carb. turn it back on.
3) Try it.
4) Start it with the choke on and put your hand over the air filter hole. Will cause some back flow.
5) Try again.
Worked for me. Might be dirtier on yours, or have mud in it or something.
Posted on Dec 02, 2009
the carbereter jets are blocked up,, strip it out and clean them out
but dont go pokeing a bit of wire into any jets or you will distroy them
if jets are blocked the bike will normaly only run with full choke on
Posted on Feb 21, 2010
SOURCE: 2000 1200 Sportster won't start
The classic indicator of a clogged idle jet is that the bike won't idle unless the choke is on. It may or may not rev if throttle is applied. If the bike has been sitting (sometimes as little as 3 weeks) the **** that is sold as gasoline will evaporate and leave deposits that clog the idle jet, and maybe the main jet.
If you can get the bike to rev, it indicates the main jet is not clogged, only the idle jet. Pull the idle jet out and see if the you can see light thru the orifice. If the jet is clogged DO NOT try to unclog it with anything that could alter the size of the jet. A straight piece of fine wire is ok, or just use carb cleaner to blow it out. If it ain't passin' light, it ain't passing fuel.
Ideally you would pull the carb off, remove all of the attached pieces, remove the idle air screw plug to remove the screw, soak the carb and pieces in cleaner, blow the passages out, and reassemble. You can likely get by with just cleaning the jets.
The suggestions of SeaFoam or other additives will work to keep the buildup of deposits down. They just don't do a lot of good when the fuel isn't flowing thru the jets.
Open your fuel cap and take a sniff. If what you smell reminds you of paint thinner, drain that **** out. it is no longer gasoline, all thought it will burn.
Good luck. Fuel additive (Stabil, Seafoam, Yamaha, Kawasaki, etc) and a battery tender are your friends when you bike is just sitting.
Posted on Jul 22, 2011
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