Question about 1991 Honda ST 1100 Pan European

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1991 Honda ST1100 cranks only with full chok on. The

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.

HELP Please!!

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  • johnshore74 May 23, 2010

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Posted on Jan 02, 2017

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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

  • 48 Answers

SOURCE: will only run with full choke and absolutely no throttle.

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

  • 1 Answer

SOURCE: have a 04 yamaha big bear 400. hard to start wont

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

  • 2702 Answers

SOURCE: idles ok with choke out but wont run any higher

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

  • 10319 Answers

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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Honda ST1100 cuts out

Hi, Terry and the usual suspects are:
1. Severely discharged or a damaged battery must have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
2. Faulty alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Faulty main circuit breaker or ignition switch, check for loose connections and continuity.
5. Faulty system and or ignition relay, check for continuity.
6. Faulty ignition coil, ignition/electronic module.
7. Faulty CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Fuel tank empty
11. Fuel tank contaminated with ethanol sludge.
12. Water or dirt in the fuel system, or clogged filter.
13. Restricted, blocked or kinked fuel line.
14. Faulty fuel pump.
15. Faulty pressure regulator.
16. Faulty or clogged fuel injectors.
17. Lean angle switch is faulty or needs adjustment.
For more information about your issue and valuable "FREE" downloads that you need please click on the blue links below. Good luck and have a wonderful day.
Honda ST1100 Pan European cutting out
Honda 2003 ST1300 Service Manual
Honda ST1100 Owner Manual

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