exhaust smoking

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davefish
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Posts: 13
Joined: Sun May 27, 2012 12:20 pm
Main scooter: lambretta gp
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hi my gp 150 is smoking rally bad I think the drive side oil seal my have gone. how can I tell with out striping it down
I have had the oil seal replaced about four months ago when it first started it stopped it but now its started again dose anyone
know why it keep happening.
Yanker
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Joined: Thu Jan 21, 2010 10:56 pm
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A couple of basic checks:

1) If it is smelly white smoke, you have a drive seal problem
.
2) Start the engine, let it warm up, block the exhaust pipe: If it doees not cut-out after 10 seconds then you have an air leak problem.

3) Start the engine then open the oil drain plug into a bowl: if the rpm starts to rise: drive seal

4) Take the bowl of oil outside, if you then can smel petrol in the oil definite seal failure.

There are many possible reasons: so best to see if it is infact the seal fisrt, then re-post on this thread for checks to do when breaking down the bottom-end again.

Cheers
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davefish
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Posts: 13
Joined: Sun May 27, 2012 12:20 pm
Main scooter: lambretta gp
Contact:

removed engine today and found oil in the barrel but iv not got time to go any further
will post more when I have time
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