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<  General Scootering  ~  mystery Oil leak on vespa 150
agigau_k
PostPosted: Tue Jun 19, 2007 12:08 pm  Reply with quote
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Joined: 19 Apr 2006
Posts: 80
Location: Brooklyn Park

I was seeing thick black oil on the muffler pipe just under the cylinder. Oil all over the bottom of the cylinder and oil on the gear box. Also, Oil on the Floor board near the cylinder and muffler connection. The bike started well, and idled pretty good. My top speed was about 45 mph on a 150cc engine. I know I wont go much more than 50 or 50+ but a honda elite 80 was keeping up with me. Besides the base gasket that I am in the process of replacing (when it arrives) anything else I should check out that would cause oil to leak like this on a two stroke 150 vespa?
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Derrick
PostPosted: Tue Jun 19, 2007 12:41 pm  Reply with quote
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I doubt a bad base gasket is causing exhaust to leak out. I would bet its the connection between the cylinder exhaust stub and the exhaust down pipe. That connection is very poor on most repro exhausts. I use permatex high temp copper silicone on that joint. Both pieces MUST be clean before applying the silicone.
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Kevin K
PostPosted: Tue Jun 19, 2007 9:57 pm  Reply with quote
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+1 on the Permatex. Good stuff.
-K

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chris
PostPosted: Tue Jun 19, 2007 10:25 pm  Reply with quote
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Location: Minnesnapplepuss

I use whale sperm which I get from Kevins mom. She has tons of that stuff.

Chris

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agigau_k
PostPosted: Thu Jun 21, 2007 4:52 pm  Reply with quote
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So, do I need to use a lot of liquid gasket sealer on the base gasket just like the last guy?
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Matty
PostPosted: Thu Jun 21, 2007 5:04 pm  Reply with quote
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THIN coat... He could of ripped it while putting it on. It's probably too late now but it's always a good idea to order a couple gaskets at time just in case you do tear it putting on.

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agigau_k
PostPosted: Fri Jun 22, 2007 4:47 am  Reply with quote
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Joined: 19 Apr 2006
Posts: 80
Location: Brooklyn Park

The guy put a copper head gasket on, is this gasket suppose to be there? I don't see any mention of a head gasket in the shop manual or on line.
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Matty
PostPosted: Fri Jun 22, 2007 7:12 am  Reply with quote
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Probably shouldn't but with those imported restros you're going to find a lot of stuff not right.

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Egan
PostPosted: Fri Jun 22, 2007 8:23 am  Reply with quote
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Since when is Arizona foreign? He said the guys did all the work on the rear head gasket. Now his tranny fluid is leaking on the johnson rod converter. Help a guy out and don't hat the pllayer hat the game.

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nate
PostPosted: Fri Jun 22, 2007 9:37 am  Reply with quote
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But we're talking about the forward head gasket now, and there's not supposed to be a forward head gasket. Unless this is one of the Bajaj models that came with the VW engine, but I don't have much experience with those.
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Matty
PostPosted: Fri Jun 22, 2007 11:17 am  Reply with quote
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heh vintage guys are such jerks.

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