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16

Motorcycle Speed Wobble Troubleshooting Troubleshooting speed wobbles can entail looking at quite a bit. Here are some bullet points on components you need to check on your bike for integrity and proper assembly. Rear Wheel Alignment Adjust your chain properly and ensure the real wheel is in alignment with your front. Common Issue, the wheels aren't ...


8

Overview In terms of rebuilding the shock, there are similarities between models but there are unique differences between them that make it impossible to review all of the nuance. I'll only give a high level response to the rebuilding component. Adjustment You asked. I can't figure out the low/high speed or the rebound/compression dampening. I'm ...


7

If you have stored a vehicle for an extended period of time and did not prepare it for storage properly by draining the fuel it seems you should consider doing the following things. Drain all gas from the entire fuel system Replace fuel filter in the gas tank and if you have one in your fuel line you should change that too Try and charge your battery, if it'...


7

I would say yes to both of your questions. If you have some ATF (Dexron or whatever) sitting around, squirt a "bit" into each cylinder through the spark plug hole before you do this. You don't want to drop a whole bunch in there, but enough to wet the rings (a couple of squirts from an oil can or the like should be sufficient). This will create a small ...


5

Not Necessarily an Issue There is not a guarantee that there is a problem with your charging system if the rectifier on your 1999 Suzuki GSXR keeps burning out. Splashing through water is very unlikely to have been the root cause of the issue. Suzuki Rectifiers Your era of Suzuki is unfortunately notorious for burned out rectifiers and stators. ...


5

I am very skeptical of the claim that the GSXR150 is leveraging MotoGP technology, even the top of the line sport bikes from Honda, Suzuki and Yamaha do not leverage much of that tech other than frame and swingarm. The new Honda RC213V-S is $184,000. How much did that 150cc bike cost? My point is, the inverted triangle piston skirt is not that fancy. It'...


4

Given the piston skirt is the bit of the piston under the gudgeon pin on the piston/conrod, it seems this is a way of reducing drag and wear on the cylinder (i.e. less contact patch) and therefore making it more efficient. A similar principle is used in slipper pistons A slipper piston is a piston for a petrol engine, that has been reduced in size and ...


3

The thirty amp fuse is your main fuse To ensure we are speaking using the same nomenclature, K1 is referring to model year 2001 in my verbiage. This 30 amp fuse supplies all the power to your fuse block with various 5, 10 and 20 amp fuses populated. I have quite a few hours on this bike and have seen a scenario that you are describing. Here are some ...


3

The drain screws for the four carberetors are located at the bottom, outboard side of each carburetor. The drain screws are item #23 in this parts diagram. You can drain them by removing the side covers, placing a rag underneath the carburetor and with a reasonably long Phillips screwdriver, unscrewing the drain screw until fuel flows out and into the rag. ...


3

Engines with a single cylinder can be arranged at any angle but typically upright or inverted. In Gixxer they says, "An inverted triangle shaped piston skirt has also been utilized to increase bottom end torque, smaller and lightweight rocker arms and a reduced angle of the valves have all helped better combustion, aided by the good looking dual type ...


3

Background The GSXR 750 has the following attributes. Carb and FI versions depending on year. 4 Carbs or 4 throttle bodies, depending on year Two coil packs, 1 for cylinder 1 and 4, 1 for cylinder 2 and 3 Troubleshooting Possible causes If a coil were bad you would have an issue with two cylinders more than likely. Coils going bad on high energy lead ...


2

Your description is making me question your diagnosis so far, in terms of is it one cylinder affected or all. Because a GSXR should be able to run (badly) on 3 cylinders, and cleaning the fuel cap shouldn't make a difference to just one cylinder. From your description i'd start by replacing the fuel and ensuring it flows freely to the carburettors. (is it ...


2

Not Necessarily an Issue There is not a guarantee that there is a problem with your charging system if the rectifier on your 1999 Suzuki GSXR keeps burning out. Suzuki Rectifiers Your era of Suzuki is unfortunately notorious for burned out rectifiers and stators. Whomever they were sourcing them through had a huge quality control issue. The TLR and TLS ...


2

[answer in progress] One of the reasons regulators burn out is overheating. That is why people put it outside the frame on some bikes to get better airflow around them, and out of the cooker. However, given that you had done that, it must be other reason. I would suspect connections, but then again, you had replaced the harness (seems a bit rash, replacing ...


2

I have switched out the fuel pump with another I bought on ebay for $40 and ridden the bike on hot days. I found the fuel filter was heavily clogged which possibly contributed. I think as some of you have suggested it was an electrical fault when the bike was hot due to higher resistance. Thanks for all your answers! I'll update if the problem re-occurs but ...


2

From your description I would say that the sputtering under heavy loads and high temperatures is due to insufficient fuel delivery. Common suspects that cause this condition on fuel injected setups include: a clogged fuel filter a weak fuel pump low fuel rail pressure


1

I would suspect an electrical problem with the coils or CDI. Analogue CDI systems of this era used components that can degrade over the decades and act intermittently as you describe particularly over different temperatures. I am less convinced this is a coil problem since a GSXR750 has 4 coils and it would be unlikely for multiple coils to begin to fail ...


1

My first thought was that the coil was faulty... It can be a CDI problem too... although what you described sounds like a malfunction... Try cleaning the carbs with pressurized air (take them out, dismantle them and clean them, or ask somebody to do it. Beware, you risk damaging them if you make any mistake), then you can try some carb cleaner spray. My 2 ...


1

If the bike has been sitting in a garage for an extended time, the membranes in the carbs might gotten hard. If that's is the case the mix is too poor, when the engine has to deliver power. The plugs is probably light grey in that case. If the RPM limiter sets in too early, the sparks would be wet and black, because of the unburned fuel.


1

Yes of course there is relation between : Temperature Engine component material Type of Fuel System Type of Oil Lubricants Oil : Every engine with lubrication system inside, needs to be idled until the oil covers all the engine components. If not engine components may get hard friction without getting the oil lubricates. e.g Piston Ring, and it can make ...


1

This really sounds like an Ignition Switch problem. Go over the symptoms carefully. The engine just stops (as if the ignition was turned off). The starter just clicks (does not turn the engine around). There are many contacts in the ignition switch, so the indicator lights stay on. One or two of them are out of spec, and when it gets hot, the connection ...


1

From your description I'd suspect an electrical fault. Maybe a fine crack in a circuit or a broken soldered joint. With enough heat the gap opens enough to break the circuit. You could try swapping components from another bike to help isolate the problem in a process of elimination.


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