Modern Vespa : No start after replacing exhaust manifold

No start after replacing exhaust manifold

LoboCarrasco

UTC

details

Lurker

Vespa GTS 125

Joined: UTC
Posts: 1
Location: Brussels, Belgium

LoboCarrasco

Lurker

Vespa GTS 125

Joined: UTC
Posts: 1
Location: Brussels, Belgium

UTC quote

Hi guys,

Yesterday I replaced a broken exhaust manifold (GTS 125) including the gasket and the metallic fibre thing. While doing it, I unscrew the oxygen sensor, and screw it back into the new manifold before installing it.

Today the Vespa will not start. The starter will wind the engine, but no "brooom". I just can't think of what could have I done wrong during the installation. Could it be the oxygen sensor? Can you guys think of something?

Thanks a lot in advance
Antonio

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jimc UTC details Moderaptor The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300 Joined: UTC Posts: 44785 Location: Pleasant Hill, CA
jimc Moderaptor The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300 Joined: UTC Posts: 44785 Location: Pleasant Hill, CA	UTC quote Check your spark plug wire - it may have been damaged either by hot gas or dislodged while the broken downpipe was being wrestled off and replaced.

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