Question about BMW K 100 Motorcycles

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I have an 84 K100 that will not start. The bike has set for 1 to 2 years with the same gas. The bike was my brothers. I drained the gas from it and replaced with new gas. The bike will start and run as long as you put ether in it. When you stop the ether it will no trun. It has a new battery and will over and try but not run. So now im at a loss of what to do now ?

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Drain out all of the old gas first, put in fresh fule fully charge battery and retry starting her up, if no luck starting unclip fule pipe from injector rain and cranck motor over if fule spills the fule pump is working ok, pull off ecu plug and spray with wd40 all plugs and refit check spark do not let spark plug hand loos this must stay earthed or it can wreck the ecu if motor starts up, when it starts up some injuctor cleaner in fule tank and run engine up

Posted on Nov 24, 2010

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1 Answer

K100 gas pump


Hi, Anonymous you may need a new fuel pump for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
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Dec 18, 2013 | 1988 BMW K 100 RT

1 Answer

Turn the key on did not hear the fuel pump come on.did this few times same answer.towed bike home.second day try to start it it firer right up.shut down and started it again 4xs it firer up. third da


Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
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1 Answer

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Hi, Tonyhickey52 if your bike has been sitting idle for months or years and you did not do any pre-storage maintenance I feel your pain it will probably have a dead battery and not want to start or if it starts it will idle and run poorly, here are the following steps necessary to complete in order to get your bike back to an acceptable running condition.
1. If your battery was 3 years or older when you last had the bike running you should replace it.
2. If you believe your battery might still be serviceable remove it from the bike and put it on a 1 or 2 amp trickle charger for 24 hours. If it is the old lead acid type with visible cells and acid levels fill each cell to the top line with distilled water and replace the caps, run the vent tube into a plastic or styrofoam cup, any cells that are cloudy/milky replace the battery.
3. After charging remove the leads and let the battery sit for a couple of hours then check the battery voltage with a volt meter, you should have 12.5 volts or better, any readings in the 11 volt range you need to do a proper load test on the battery and replace as necessary, any readings in the 10 volt range you have a dead cell and replace the battery.
4. Drain and flush fuel tank, google " how to clean a motorcycle gas tank" find a couple forums to view the different options available.
5. Remove your air cleaner and clean and re-oil per Mfg. specifications.
6. Remove the carburetor, disassemble and decontaminate with a carb dip or if you have EFI remove injectors and clean with carb spray and compressed air
7. Remove fuel valve and filter disassemble and clean as necessary, remove fuel lines and replace with new ones.
8. Replace spark plug with a new one and check for spark.
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Jan 07, 2012 | BMW K 75 S Motorcycles

1 Answer

I bought my brother's 1987 Kawasaki Ninja 750R. He told me that he used to have to use booster cables to a car battery to start the bike for the first time in the spring. I've changed the spark plugs,...


Yes, drain the carbs. Also clean the air filter. Get a can of spray starting fluid to assist in getting the engine to start. Chances are the carbs are gummed up from sitting so long. You will probably end up removing the carbs for a thorough cleaning.

Apr 13, 2011 | kawasaki GPX 750 R Motorcycles

1 Answer

1997 Honda CBR 1100 XX. Bike builds idle slowly when cold . right side exhaust is forceful and hot while left side exhaust in minimal and warm only. Changed plugs and made no difference. Seems to idle...


Clay, you have a tiger by the tail. There are a lot of little parts to the carb system. I will try to assist you in the basics without carb removal. This may require a few replies back and forth. Start by turning off the gas then drain the carbs. Now turn on the gas and check to see that fuel flows into each carb. If gas starts flowing out of all the float bowls, now that the gas is back on, then all carbs are getting gas. To drain the carbs just remove the drain screw on the bottom of each carb float bowl. Two carbs have the drain screw on the left, two have it on the right side. Reply with what you find. tombones49_51.gif

Apr 03, 2011 | 1997 Honda CBR 1100 XX Super blackbird

1 Answer

1989 k100 bike will start andtickover from cold on choke but cuts out when throttle is opened.when engine is warm engine runs very lumpy will not rev unless iwork the throttle backwards and forwards not...


hi , check the following : 1 - old fuel or water in fuel ? 2- Drain the carbies 3- timing is out and need adjusting 4- Remove bowl from the carbies and give the jets a clean . try all this and let me know how you go .

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1 Answer

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http://www.cmsnl.com/kawasaki-1984-a1-kl600_model12376/partslist/1D.html

Exploded views of the whole bike on the above sight. Should help you get it all good. Make sure to set timing at TDC before gettin the head/cams/chain etc ready. Cheers

Mar 27, 2010 | kawasaki KLR 250 Motorcycles

1 Answer

I have been trying to start my kawasaki vulcan ..she try but it doesnt happen...i took out the gas line to drain but is not working ..what else i can do?


The line to drain the gas tank or carb? If you have auto shut off fuel valves(vacuum) set the fuel valve to "prime"(or check owners manual about fuel system)
Some bikes need a fully charged battery to start sometimes.
Will the bike fire on starting fluid?
Spark plugs OK?
Can you get a 1/4 " spark at the plug.
Contact me if you need more info.
Eric

Sep 23, 2009 | 1997 kawasaki VN 800 Vulcan Classic

2 Answers

Can you put fuel cleaner in your gas tank? my bike runs fine then it stalls and sometimes it won't start. I just bought the bike and the owner had it setting for 2 years in his garage can it be bad gas?


Hello shawn...Yes indeed gasoline can degrade over time. That can lead to a number of problems, ranging from hard starting, to rough running, to no starting at all...If your bike was stored for 2 years the gasoline in it has degraded beyond use. Even if the gas was treated with stabiliser before it was stored...it will still degrade in 10-12 months, if not sooner. I'm suprised your bike will even start. I suggest you drain ALL the gas out of the tank, Rinse and refill with fresh gas, drain your carbs as well...the stale gas has most likely clogged the pilot jets, draining the carb bowls will help.
Go to your parts store and buy a can of "Seafoam" pour 1/2 of it in with your fresh gas..use the other 1/2 on your next tank of gas.
Replace fuel filter after 1st tank, the seafoam will dislodge any debris that was in the fuel tank. It will also clean the combustion chambers and carb jets. Check your carb boots for any cracks or detoration that would cause a vacuum leak. Replace your spark plugs. If your bike is still running rough after this, then the carbs will need to be removed and cleaned and/or rejetted.
Good luck..i hope this helps, please rate me a fixya.

Jul 28, 2009 | 1997 Honda CBR 900 RR Fireblade

1 Answer

Water in my Quad Bike engine, How do i remove all of it ?


You do not need to tear into the engine. Just remove the drain screw (or drain plug) from the carb float bowl and drain the carb. Remove the tank and dump it out. flush it with a bit more gas. Remount the tank then fill with gas. Drain a cup of gas and check for water in the bottom of the cup. Keep draining until no water is in the cup.

You may need to remove and clean the carb. Sitting for a year can allow gas to dry and form varnish that can plug up the jets. ESPECIALLY if the gas valve was left on.

A “very helpful” rating on this answer? Thanks!

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