Quote:
Originally Posted by geraintthomas
Surely if the oil filler pipe is cracked, then the engine wouldn't sound much different if I ran it with it removed? It stalls when I remove it, showing there's a huge difference when it's in place.
Would a faulty AOS cause a vacuum leak?
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I'll let the master answer those questions in the attached thread. The squeak or hiss you attached in your first post could be from your front main seal.
http://986forum.com/forums/performance-technical-chat/54624-did-i-toast-engine.html