how to tell if motorcycle timing is off

Others figure they can throw in a new set of points, set the gap with a matchbook cover and drive on.

They are usually specified in degrees relative to TDC. The number one and number four cylinders' timing should be set first.

With the light in place, the ignition should be turned on.

here is a good article. You should see a Dot in the hole, pretty much centered.

This will expose your Ign.

If it's not then loosen the 2 stand offs for the timing plate so you can rotate it to center, or within the opening.

Valve timing is set when you degree your camshaft, and is not adjustable through the distributor.

Has this concern just started or is it a complication or ongoing from your original concern of connecting rod?

the Dot. John Glimmerveen is a former competitive motorcycle racer. Hook the light to your front spark plug wire and point the light at the hole from the allen screw. to advance timing rotate distributor body counter-clockwise, thereby moving each contact farther into to the clockwise rotating rotor. You can gauge it off the spark plugs too. Timing advance, meaning the number of degrees set on the timer before top dead center, will determine the exact point at which a spark ignites the air and fuel mixture.

How does it start? The color change in the ground strap should be at the apex of the bend. When the timing marks just start to appear, a 12v test light (or a multi-meter set to 12 volts DC) should be connected across the contact points (one side to ground, one to the hot lead on the other side of the points). With the light in place, the ignition should be turned on. But set the ignition timing? the only exceptions would be very high compression motors. Too close to the threads and you have too much advance.



6 deg. On the right side of engine cases,below where the 2 cylinders meet, is a large Allen screw.

The Ins And Outs Of Engine Timing, And What Happens When It Goes Wrong. Sure you might be able to save a few bucks for a day or two by holding off on the new tire, but what happens if you go down because the tire wasn’t in the right conditions to hold you up on that curve or ride through a bit of rain. To find the firing point for these cylinders, the crankshaft should be rotated (see note below) until the piston on number four cylinder is on its compression stroke (a plastic drinking straw placed through the plug hole onto the piston works well). This will expose your Ign. When the timing marks just start to appear, a 12v test light (or a multi-meter set to 12 volts DC) should be connected across the contact points (one side to ground, one to the hot lead on the other side of the points).

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At the point when the light illuminates, the timing marks should be aligned. With the timing set on cylinders one and four, the mechanic should continue rotating the crankshaft until the number three cylinder's piston is approaching TDC.

He later worked as a race technician for several international race teams. Remove your timing cover, RH side of engine on gear cover. Serious damage usually occurs when it is. Although setting the points gap and the ignition timing are critical to the performance of these machines, it is a relatively easy job for the home mechanic to do. Do not rotate the engine by this bolt as they can shear off.

You should see a Dot in the hole, pretty much centered.

I just feel like the two exhaust are going at different rates... Not as synchronized as other sportsters I've heard.

Alternatively, the engine can be rotated by the kickstart lever, or by rotating the rear wheel. NO WAY... they are scared stiff of it. Remove that. ... My point being, very RARELY is timing off on a motorcycle. Normally there are several other factors that make the motorcycle "sound" or act like the timing is off when it isn't. - Nut Show Full Signature. Locking the timing plate screws and checking the timing again is essential to the process of tightening the plates screws will slightly alter the timing position.

do you get any pinging? plate. mine was to advanced and I had spark knock when I would start off from a stop. As explained in other answers, ignition timing is point in the 4 or 2 stroke cycle when the spark plugs fire. It's important to remember that some Japanese motorcycles (Suzuki, for instance) have a 6 mm bolt locating the points cam onto the end of the crankshaft. If an owner or mechanic sets the ignition time properly, maximum pressure occurs in the cylinder, enabling optimum air and fuel mixing and combustion, and efficient engine performance. Further rotation of the crankshaft will bring the points cam lobe into contact with the heel of the points. There's been no way to adjust it on any of my bikes.

The process used for checking/setting the timing on one and four cylinders should now be repeated for cylinders two and three. Raise RPM's to at 2k., this advances your timing. btdc is fine for break in of the cam shaft, and will start just about any small-block chevy.

Hook the light to your front spark plug wire and point the light at the hole from the allen screw. plate. Remove your timing cover, RH side of engine on gear cover. Don’t kill yourself or fuck up your motorcycle by not checking your tires regularly or by being cheap about it. Can anyone tell me how I can fix this problem? Do you have an adjustable timing rotor or something?

I have a 93 gsxr 750 and the timing is off. Save Share. If this design is used on your engine, there will also be a large nut to rotate the engine in the same location. Raise RPM's to at 2k., this advances your timing. LiveAbout uses cookies to provide you with a great user experience and for our Japanese Four Cylinder Bikes: Setting the Ignition Points GapLearn How to Set Up 2-Stroke Ignition Timing on Your MotorcycleDoes Your Car Use Points Ignition or a Computer Controlled System?Understanding Diesel Glow Plugs and How to Replace Them

If the timing was out, the timing plate should be loosened, the crankshaft set at the firing point, and the timing plate rotated until the test light is just coming on. Further rotation of the crankshaft will bring the points cam lobe into contact with the heel of the points.

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