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Pk100s engine intake manifold?
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Lucawasps
UTC
Enthusiast
Vespa 50s (1990), Vespa 90 (1975)
Joined: UTC
Posts: 92
Location: UK East Coast
 
Lucawasps
Enthusiast
Vespa 50s (1990), Vespa 90 (1975)
Joined: UTC
Posts: 92
Location: UK East Coast
UTC quote
My vespa 90 had a Pk100s engine in, while it was running perfect there was a oil leak and gear selector arm was wobbly (potential bushing worn and o ring missing). However I noticed my intake manifold has a smaller inlet where air can bypass the carb, is this an intended design or should I seal it. Further anyone have any advice on removing the one piece engine silent block (not two separate pieces on both sides but one single bushing). Lots of questions but thanks.
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FINYoshi
UTC
Addicted
Parmakit Primavera -74, Polini Primavera -68, VR-One 228 150 Touring -59, VMC 177 Bajaj Chetak 125 -95
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Posts: 787
Location: Finland
 
FINYoshi
Addicted
@finyoshi avatar
Parmakit Primavera -74, Polini Primavera -68, VR-One 228 150 Touring -59, VMC 177 Bajaj Chetak 125 -95
Joined: UTC
Posts: 787
Location: Finland
UTC quote
There should not be a hole in there. Looks like a nipple for autolube which smallframes should not have. If there is a hole, blank it off or possibly change the whole sketchy looking intake manifold.

Removing the rear shock silent block only takes piece of adequately sized pipe, washers and allthread to pull it out.
Jack221
UTC
Jet Eye Master
PX221 MHR heavily tuned, PX200 O tuned, PX181 M1XL tuned, PX166 tuned a bit and some motorbikes
Joined: UTC
Posts: 5144
Location: London UK
 
Jack221
Jet Eye Master
PX221 MHR heavily tuned, PX200 O tuned, PX181 M1XL tuned, PX166 tuned a bit and some motorbikes
Joined: UTC
Posts: 5144
Location: London UK
UTC quote
Vacuum fuel pump??
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