Fuel Injector Tapping Noise on 06 Outback

J

John C

Hi fellow Subaru owners,

RE: 2006 Subaru Outback Wagon 2.5i AT Non-Turbo

Driving at low acceleration, coasting and at idle I often hearing a
ticking/tapping noise that seems to be intermittent, separate from the
normal engine noise. The noise is not very loud but annoying. I can tune
it out with the radio on.

But it is a noise that I've never heard on other cars in the past. I took
the car to two different Subaru dealers and they both assured me that this
noise is normal for Subaru cars and it comes from the fuel injector. I
never take what the dealer says at face value because when they don't want
to fix something, they always just say it's normal. Both Subaru service
departments were manned by apathetic, not so friendly advisors too. I would
like to get the opinions of fellow Subaru owners on this group.

I know that a Piston Slap can make a similar noise, but I do not think it's
that because this tapping noise does not go away when engine is warmed up,
and the sound occurs exclusively during coasting, slight acceleration and at
idle (and is not as loud as a piston slap noises from clips I heard on the
internet).

Doing what I can to quiet this noise down I have started filling it with 91
octane and also put a bottle of fuel injector cleaner in the gas tank. That
appears to have quieted down the tapping noise a little bit, but still has
not gone away.

Is this an issue that I should continue to try and fix or just forget about
it? Thank you everyone for your help.
 

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