986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post

wanna986 · 04-29-2008, 05:12 PM

There is definitely vacuum present when I remove the cap.

Once the cap is removed, the engine starts to get rough, stumble and "chug". I put the cap back on and things smooth out. What's this say?

04-29-2008, 05:12 PM	#15
wanna986 Registered User Join Date: May 2006 Location: Toronto Posts: 277	results of oil cap test There is definitely vacuum present when I remove the cap. Once the cap is removed, the engine starts to get rough, stumble and "chug". I put the cap back on and things smooth out. What's this say?