Ke20 3K Ignition Problem

[jasonke20]

Hey rollaclub m8, i had some ignition prob on my ke20 since a few month ago that i never fix up till now...I'm confuse in tuning the distributor and carburetor air..when i tune the distributor to a bit left.. the engine start normal..but running poor and terrible wheezing on the road....i try to adjust it again to tune it centre and to the right a bit then it become others prob again...the engine hard to start (sometimes start till the battry become weak) but when it start it run smooth on the road..i had change distributor condensor, contact point & spark plug...it would't fix at all..

anyone had an idea for this..?

[GJM85]

You need to get a timing light, a set of feeler gauges and a tachometer of sorts.

 

1.Manually turn the engine until the points are on a high point of the distributor shaft.

 

2. Loosen the screws and slide the feeler gauge between the contacts. You want to set the gap to 0.45mm

 

3. Using your timing light you can adjust your timing using the dial on the side of the distributor. If it doesn't have the adjustment there, then you will need to loosen the 12mm bolt at the base of the distributor and set the timing to 8-10 degrees advance at idle. You can see the timing marks on the front of the timing cover and there should be a notch in the crankshaft pulley. It will help if you highlight this notch with white marker.

 

4. Tuning your carburettor could be difficult if there are any air leaks or faulty parts. Start with the idle mixture screw. On the side at the base of the carb. Wind it all the way in until it seats, softly. Wind it back out 2 turns out.

 

5. Moving to the idle speed screw. On the back of the carb where the accelerator cable links up. Wind it all the way out until the screw is just touching the accelerator linkage. Wind it back in 1 & 1/2 turns.

 

This is now the base tune for your ke20.

 

Start the engine and set your idle speed to 850rpm. Then double check the timing is at 8 degrees.

Edited June 18, 2013 by GJM85

[you_nes]

hard to start but runs well = too much ign advance

easy to start but runs poor = too little ign advance

 

either way get a timing light and dial it to 8-10deg at idle like GJM85 says. If, after that, it still runs like a dog then the mechanical advance is seized and you need to replace the distributor.

[jasonke20]

You need to get a timing light, a set of feeler gauges and a tachometer of sorts.

 

1.Manually turn the engine until the points are on a high point of the distributor shaft.

 

2. Loosen the screws and slide the feeler gauge between the contacts. You want to set the gap to 0.45mm

 

3. Using your timing light you can adjust your timing using the dial on the side of the distributor. If it doesn't have the adjustment there, then you will need to loosen the 12mm bolt at the base of the distributor and set the timing to 8-10 degrees advance at idle. You can see the timing marks on the front of the timing cover and there should be a notch in the crankshaft pulley. It will help if you highlight this notch with white marker.

 

4. Tuning your carburettor could be difficult if there are any air leaks or faulty parts. Start with the idle mixture screw. On the side at the base of the carb. Wind it all the way in until it seats, softly. Wind it back out 2 turns out.

 

5. Moving to the idle speed screw. On the back of the carb where the accelerator cable links up. Wind it all the way out until the screw is just touching the accelerator linkage. Wind it back in 1 & 1/2 turns.

 

This is now the base tune for your ke20.

 

Start the engine and set your idle speed to 850rpm. Then double check the timing is at 8 degrees.

hai GJM85....had tune up everything...still running wheezing when i push the throttle quick....i turn distributor 8 degrees to left..is it correct..? and there is a vakum stick with the distributor...it didt connect to anywhere...is it be a wheezing prob too..? thanks for quick reply..

[GJM85]

There should be a vacuum line that runs from the front of the carburettor to the distributor. This is the vacuum advance line and is responsible for advancing ignition timing at take off.

If its not connected at the distributor, its most likely not connected at the carb and would cause a vacuum leak.

Edited June 19, 2013 by GJM85

[jasonke20]

There should be a vacuum line that runs from the front of the carburettor to the distributor. This is the vacuum advance line and is responsible for advancing ignition timing at take off.

If its not connected at the distributor, its most likely not connected at the carb and would cause a vacuum leak.

m8..i didt find out any line frm my carb to connect the vakum..I'm also not sure if this carb is the stock for my ke20...i can't find the model at google...in front of the carb got a mirror show the petrol measure...u know where is the vakum line for this carb..??

[GJM85]

There should be a stem coming from the carb somewhere around the base but not below the throttle plate.

If the carb has a recticle to view the float level it is likely a Nikki as I believe there the only other carbs with the same stud pattern as the Aisan ones.

[jasonke20]

my carb is looks like this..i'd find out the vakum line but it not a stem..its a skru attach with the stem act but has lost....what is it call..? i'll try to buy it if have... .?

(sample pict only).

Edited June 22, 2013 by jasonke20

[jasonke20]

m8...I'm still nt understand how to set the distributor to 8-10 deg at idle..tune to left or right side..?

sorry for too much quest...

[GJM85]

Left to advance.

 

[jasonke20]

Left to advance.

Thanks for the tips...next plan is to overhaul the engine..hope it will be run smooth and better then now...