Hard acceleration engine knocking fixed - Saab 9-5 Bulletin Board - Saabnet.com
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Hard acceleration engine knocking fixed
Posted by Vlad from Toronto [Email] (more from Vlad from Toronto) on Tue, 6 Sep 2005 07:01:11
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Hi Folks,
Just to share an easy fix for my engine knocking/pinging at a hard acceleration, especially uphill in a hot days.
This pinging was killing me for a while this summer. I even tried a MotorVac machine to clean up combustion chamber, injectors, etc. New spark plugs, throttle body clean up, DI is just about one year old. Nothing seemed can help.
So the final try a couple weeks ago was to inspect/clean vacuum lines, despite most of them were replaced a year ago.
The first item: t-shape plastic connector, out of the valve cover showed up a clogged pipe, the smaller one, that goes to a check valve and then down to PCV box. I could even blow out. After that I replaced a couple short vacuum lines, left untouched from last year, the most difficult to reach around the other engine end.
That was it. It's like getting back the car. Flying high again.
Good luck,
Vlad
1999 9-5 175KKm
Toronto
posted by 207.107.50...
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