Question about 1998 Subaru Forester
I have a 2.0 petrol Subaru forester that makes a knocking / tapping sound when the engine starts. Once it has warmed up it stops making the noise..... Does anyone know if it's the start of a problem?
I have the same problem on my 2.0L 2001 Legacy auto. It began about 1000 miles ago. It has now done 84k. From my online searches this is most probably 'piston slap', and is not serious. To save weight Subaru shaved down the skirts on the pistons. With normal engine wear the pistons will at some point rattle against the cylinders until the engine is heated up and the pistons expand. The rattling should go away after a few minutes. If it persists say 10-15 minutes, it may be another problem.
Posted on Nov 26, 2009
I could be one of 3 things, #1 lifter might loose prime when it sets for a while like overnight, #2 could be rocker a little loose witch is part of lifter that runs on a pushrod, and #3 could be a ristpin witch holds piston to connecting rod a little worn. None of thies are a real big thing unless they get louder or longer in duration. I don't know what kind of miles are on it but what you describe is usely associated with high millage. Just keep your ears open.
Posted on Feb 06, 2009
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Posted on Jan 02, 2017
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