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Help, it was working fine. Now it won't start with either kick or electric start. It has a spark. Has fuel. I've cleaned carb replaced reed valves fuel lines all work ok battery is new and is working fine I'm out of ideas please help as I'm very inexperienced with Vespas
Also any ideas how to get access to remove starter motor as relay just clicks now?????
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If the relay does just the one click, and nothing else happens, it's very likely the relay contacts have become so dirty (because of arcing over the years) that hardly any current can flow.

It's a cheap replacement, and always worth having as a spare anyway.

If that doesn't work, then the starter motor brushes may be worn.
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But if you can't kick it either, check the compression.
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And what do I do if it is compression
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Relay probably clicks because the battery is drained from cranking over for so long. Charge the battery and see if that changes things.

Rent a compression tester from an auto parts store. Stick it in the spark plug hole and turn the motor over. It should be minimum 100 psi. Anything less and you have too low compression. If that's the case, you will need a new top end.
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MJRally wrote:
Relay probably clicks because the battery is drained from cranking over for so long. Charge the battery and see if that changes things.

Rent a compression tester from an auto parts store. Stick it in the spark plug hole and turn the motor over. It should be minimum 100 psi. Anything less and you have too low compression. If that's the case, you will need a new top end.
If the battery was low the relay wouldn't just click, it'd buzz, as the extra inrush current would pull the volts below the hold-in range of the relay (about 8V). The relay would open, the volts would rise, and the relay would click again - it'd rinse and repeat quite rapidly.
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Kambo5637 wrote:
And what do I do if it is compression
Depends on what the cylinder and piston look like. If they're good, rings are all you will need. A good test, if you don't have access to a compression tester, is to seal the spark plug hole with your thumb or finger and turn the bike over, either by kicking or with the electric starter.

You can hold the spark plug in your other hand and test for spark at the same time. What I have found is that people who do perform this part of the test definitely need to find a mechanic.

Another test is to kick it over with the spark plug in the bike. If you can easily turn it over by using your hand on the kickstarter, you don't have enough compression to make it run.
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