Welcome to Ultimate Subaru Message Board, my lurker friend!
|Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.
We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!
Serving the Subaru Community since May 18th, 1998!
2.2 engine knock?? lifter? question
Posted 12 January 2006 - 10:26 PM
At any rate, she asked me to listen to it. I compared it to 2 of my EJ engines and it sounds identical, except she gets a slight knock/tap at low idle. No noise above idle, under load, deceleration, or acceleration. If you rev the engine up and then let it settle back to idle it takes a few seconds for the tap to start again. The tap is very faint, but noticeable. Does this just sound like a lifter? She had the timing belt, seals and h20 pump done 4 months ago. Nothing done to the oilpump however. There are no performance issues with driving and the car has been maintained VERY well! (mobil 1 since new)
I told her it's no biggie. Every engine sounds a bit different.
Posted 12 January 2006 - 10:56 PM
Posted 12 January 2006 - 10:58 PM
Posted 12 January 2006 - 11:45 PM
Posted 13 January 2006 - 06:08 AM
Guys, I think this has hydro -lifters. I guess one might not be pumping up?
if it has HLA's, then yup they can make noise. sometimes a grade thicker or thinner oil will help, though i consider that a band-aid more or less. or try some sea foam added to the oil. this can clean the HLA if it's build up related.
oil pump would have been a good maintenance item with all that timing belt, water pump stuff too. it has seals and screws on the backing plate that come loose. not saying that's the cause but good to take care of "while you're in there".
and the guy saying engine knock is probably wrong. is it me or does every diagnosis from people that know nothing about cars involve either "the catalytic converter is clogged" or "it's like it's not getting any fuel so it's the fuel pump".
Posted 13 January 2006 - 06:31 AM
Posted 13 January 2006 - 06:35 AM
if it's is an HLA engine change the oil often (relatively speaking of course).
Posted 13 January 2006 - 06:50 AM
Posted 13 January 2006 - 06:51 AM
and it is "flopping" around at idle.
As the RPM build the centrifugal force keeps it from flopping
I like the mechanics stethoscope idea Shawn has,
if it is a tension problem
it has the potential for skipping a tooth and causing some drivability issues.
Posted 13 January 2006 - 07:01 AM
Slapping belt make sense though.
Posted 14 January 2006 - 05:22 AM
forgot to relase the tensioner
fresh belt was tight and has loosened up some
when warm it has enough slack to hit the belt cover
stethescope can be a very good friend
Posted 14 January 2006 - 07:00 AM
Posted 14 January 2006 - 07:11 AM
I find your typical garden hose fits
my elephant sized ear better. LOL
Placing a dowl or other cirular object in the
working end will provive a means for pinpointing
Posted 14 January 2006 - 07:36 AM
It's my previous car, a 1990 Legacy 2.2 with the same engine as the 95. It's equipped with hydraulic valve lifters, just like the one you are talking about.
I know that recording doesn't have the engine idling for too long, but you can hear a slighty rattle in there somewhere. At the time of the recording the engine had 120k miles. Car is still running with 200k miles on the clock :-)
Posted 14 January 2006 - 07:44 AM
"piston slap" at idle
The piston skirt was to blame
could we be hearing this in both examples
There was reportedly no cause for concern
Posted 14 January 2006 - 02:16 PM
Thanks all for your input. You are all great!!
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users