Question about Suzuki GSX 600 F (Katana Motorcycles

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Bike was running good...all i did was a tune up with the spark plugs put new ngks in it bike revs good but once ya start going down the road it goes to ****...ne body ever have the same problem? or maybe know what is happining...after i changed the plugs and got the fairings and the fuel tank back on went to start it and it made a loud noise almost like motor locked up after pushing the starter a few times it finally did start turning over again and finally started...

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Check that the plug wires are back on the correct cylinders. Sounds like you have two mixed up, causing the ignition to be out of time.

Posted on Jul 19, 2009

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My 1997 900 Triumph sport sprint started to run on 2 cylinders, I thought it was going onto reserve so turned the tap to the reserve position but this didn't solve the problem. When I got home I drained...


Sounds like something has clogged one of the pilot jets in the carburators. You can figure out which one by feeling which pipe is cold after running for a short time. Probably best to clean all 3 carbs while you have them off.

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Mercedes clk 200 petrol 1999.guys I really need help quickly please. Only brought the car yesterday and already it's a goner. Driving home it was very sluggish. this morning again sluggish....


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2003 Kawasaki KX 125 Sputters at high RPM


Hi, Nick if you have changed your fuel delivery system, air filter size or flow rate, mufflers or exhaust system or a significant change in altitude your carburetors need re-tuning and if your fuel system (gas tank, filters, fuel valve and carburetor) is contaminated with ethanol sludge, varnish, rust, dirt, water etc. or your bike has been sitting for months or years without running these components must be "PROPERLY" cleaned and reassembled "CORRECTLY" before any adjustments can be made. Tuning your carburetor is fairly simple once you understand the basic principals. You engine is a simple airbox sucking air in and blowing it out, it is finely tuned at the factory for maximum performance once you upset that delicate balance by changing air filters, camshafts or exhaust systems your performance may go down the and the engine may run poorly, you need to compensate the air-fuel mixture in the carburetor in order for the engine to run smoothly and at peak performance. If you are running multi carburetors you need to sync them first and make sure your air cleaner element is clean and dry for paper elements or lightly oiled for foam and meshed elements and properly installed. Here is how and where you compensate trouble: "TIP" if your engine "BOGS" your not getting enough fuel.
1. Closed to 1/8 throttle is managed by the air screw and pilot/slow jet.
2. 1/8 to 1/4 throttle is managed by the air-screw, pilot/slow jet, and throttle slide.
3. 1/4 to 1/2 throttle is managed by the throttle slide and jet needle.
4. 1/2 to 3/4 throttle is managed by the jet needle, needle jet, main jet, and air jet.
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If you are running lean, spark plug electrode color is white, engine runs hot and feels like it is starving for fuel you need to go up on the jet size or move the c-clip down one notch. If you are running rich, spark plug color is black or dark gray, the engine runs cool, and bogs down when accelerating you need to go down on jet size or move the c-clip up one notch. When your carburetor is properly tuned for maximum performance your spark plug electrode will be a light tan color like coffee with cream. If you prefer fuel economy over performance you can go down on main jet sizes until a satisfactory level of lower performance is acceptable versus MPH, your spark plug color will be whiter and your engine will run warmer. These tuning adjustments will only make improvements if your intake and exhaust system have no air leaks or sealing issues and the entire electrical system is in proper working order and you have no mechanical issues.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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1 Answer

Hyosung avitar 650 wont stay running


Maybe this will help. This is a common problem that I have had with my GV250. Almost the same bike mechanically by Hyosung.

If the battery is low on charge and you are lucky enough for the bike to start. As per normal when first started it revs higher because the bike is cold, this turns the alternator fast to give you the electricity you need to keep the bikes computer working properly. Bike will warm up and revs drop down, alternater not turning as fast, not as much electricity being made. Bike will either stall or rev up and down irradically to try to produce its own electricity. This will occur when the battery charge is low and bike is at low revs, for example when you slow down for traffic or you stop.

If this is your problem. To resolve it when you are out on the road, keep the revs up, twisting your throttle gently when you are going slow or stopped. Give the bike a good long run on the open road to give the battery some charge from the alternator.

Make sure your battery is maintained. If you dont use your bike for a while it will lose charge just sitting there doing nothing. Give the battery a good deep cycle charge or take the bike for a good long open road ride.

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1 Answer

Will not start


I'm telling ya, since harley went to all this computerized stuff on the bikes, they're getting just like our cars got. It's getting to where you can 't work on them yourself anymore.

The ignition circuit has it's own fuse now. Since Harley went to fuses instead of circuit breakers, the slightest thing and you're down for the count. With circuit breakers, you could short something and a few seconds later, you were ready to go again. These days, you've got to find the fuses and check all of them. I don't know where your fuse box is located on the bike. The header says you have a 2000 Road King. If that's right, I think the fuse box is under the seat or the right side frame panel. That's what I'd check first.

Of course, you know that you've got a compression sensor on your engine. If you take the plugs out of the heads and put them in the wires, you won't get a spark. Take the wires off the spark plugs but leave the plugs in the heads. Put another set of plugs in the wires to check for spark.

If you'll contact me directly. I'll scan a troubleshooting chart and send it to you. It may or may not help. Seems Harley changes stuff as often as the Japs do now. Contact me directly at my personal e-mail wd4ity at bellsouth.net Remind me of what you need, ignition system troubleshooting chart.

Good Luck
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1 Answer

I have a 1986 yamaha virago 700 that wont run properly


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1 Answer

I hav let my bike sit for a while i was told after this the plugs would be nackered so i put new plugs in there and wen i tried to start my bike after i had no spark at all. i hav had a look at all my...


If it has sat for a long period of time the battery may have gone bad. Changing the plugs would not change anything to make it not have spark. When CDI goes bad it goes bad all at once. How have you tested the plugs for spark? Take a good spair plug and pull the cap off #1 cyclinder and put the spair plug in and make shure it is grounded on the cyclinder head and see if you have a good blue spark. Plugs do not go bad from just sitting thay go bad when it is running.

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Well I figured it out. The carbs were rejetted at some point by a previous owner and the bike was running richer than normal. I recently did a tune up on the bike and put in new OEM spark plugs. The oem plugs were getting fouled. I put the old plugs back in which are a step hotter than oem and the bike ran again. Im just relieved it wasnt anything major. Thanks for the advice.

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