Hit & Miss Engine Help Needed - Part 2 UPDATED

[JimDobson]

Hit & Miss Engine Help Needed - Part 2
Really appreciate all the help and advice that I have had from - Thank You. I've put this second help video up as I'm still stuck getting a spark and the wiring has me really baffled. I've tried to point out in the video what is confusing me, so I hope I have explained it well enough to be able to obtain some help and advice.....as always super appreciated guys.

 

[michael-au]

The black wire is the earth so when the contacts close it completes the earth circuit
If you put the red wire where the white one is you will just create short the circuit

 

[JimDobson]

Thanks Michael appreciated mate.

 

[JimDobson]

Have Spark now !!!
Thanks again one and all, now have a really good spark using 4 x 1.5v AA batteries giving me 6v in total.
I can't get the engine to fire and start, any suggestions would be appreciated to get it firing.
I'm not 100% how to set the timing on these engines.
It has spark now, has fuel so what should I be looking for?

 

[michael-au]

Take the plug out and see when it sparks, is it before a or after top dead centre
Try setting the timing to around 10deg before top did centre as a starting point

 

[jentwistle3]

You’ve got spark from the coil. Take the plug out and ensure that IT is sparking. is it wet? Set timing before tdc. try choking off the air with your Finger.

 

[JimDobson]

Thanks Guys....just checking is it TDC with the exhaust valve closing?

 

[michael-au]

TDC on compression stroke

 

[JimDobson]

TDC on compression stroke

Thanks Michael.

 

[johwen]

Open the needle jet a full turn and check the ignition Timing John

 

[JimDobson]

Appreciated Johwen

 

[JimDobson]

Just to check as my other H&M engines operate using a Hall Sensor.

Do I adjust the timing (spark firing) by adjusting this brass piece that pushes down to make the spark at TDC?

 

[michael-au]

Yes

if you put the piston about 10 or 15 deg before TDC on the compression stroke and then adjust the point so the are jut going to touch closed and try that

 

[michael-au]

You might need to put some electrical tape on that white wire, looks like it could short out