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villiers wx11

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Post by frank Sun Oct 02 2022, 19:22

Hi can anyone help please villiers wx 11 wont start changed coil, condenser, points, ht lead, carb float and needle valve have got 50psi compression

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Post by mattblack Sun Oct 02 2022, 21:25

Hello and welcome! welcome sign

Looking at that list it seems the only thing you haven't changed is the spark plug, they can show a spark when tested outside the engine but fail under compression.

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Post by Woodsman Mon Oct 03 2022, 11:10

Presume you are getting a spark ? If not, check for short circuit on both LT and HT windings.

Can you check condenser - even if 'new' they are sometimes faulty.

Is it a brand new coil ? What is the resistance of HT windings.

Is the HT lead plain stranded copper - no resistor?

Try holding the HT lead about 1/4" from body whilst cranking with no plug in - nice fat blue spark?   Then replace plug and try again holding lead 1/4" from plug terminal. As Matt says, sometimes you get a spark in free air but not under compression.

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Post by frank Mon Oct 03 2022, 12:21

Hiall the new parts came from villiers site, i have tried spark and it is good i eill check coil thanks for your help

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Post by StuartTurnerSteve Mon Oct 03 2022, 13:21

Sounds like a task of checking off what you have got. .

Ignition sounds like ignition is sorted. (Is it timed up ok?)
As is compression.
What is the crankcase compression like? Are the crankcase seals ok and is fuel transferring, is the plug getting wet?

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Post by frank Mon Oct 03 2022, 21:49

thanks for all your help will start from scratch and hope it works !!!

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Post by mattblack Tue Oct 04 2022, 17:43

I don't know if it's relevant, but I was advised to use 'vintage' 2-stroke oil in my Tarpen engine as it helps seal the crankshaft bushes.

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