Last post on Sep 13, 2012 at 11:12 AM
You are in the Subaru Forester Maintenance & Repair
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#3 of 12 Re: Low speed engine noise [ateixeira]
Jan 25, 2012 (9:04 am)
Not sure how far overdue, but I agree, you don't want to run with over-used oil. Most critical is your oil's total base number (TBN), which is a measure of the oil's ability to buffer the acids produced while the engine is operating. Once that number is below 1.0, the oil's ability to buffer becomes compromised and damage could result. Of course, you don't know what that number is unless you have a used oil analysis performed. That's why there are manufacturer specifications for change intervals - it isn't because the oil is used up by then, but it provides a "safe" guideline for oil changes without the need for a UOA to verify.
That said, with 50,000 miles on the car, your plugs might simply be getting old and not igniting as well as they once did. That would result in pinging, especially on acceleration.
#4 of 12 subaru forester
Jan 28, 2012 (4:16 pm)
thinking about buying a used subaru seen a 2001 with about 130k on it, what is the difference between a forester and outback, also how are they in light off road, sand, mud etc. thanks alot
#5 of 12 Re: subaru forester [morelec]
Jan 30, 2012 (8:07 am)
Similar powertrains, if you get the normally aspirated EJ25.
Forester is boxier and more upright. The cargo area is taller.
The Outback is longer and has a longer cargo area, with less height.
I think the Outback's back seat has more leg room.
We had a 98 Forester and an 02 Legacy wagon, and we both preferred the Forester, for a lot of little reasons. Both were good cars. We have an 09 Forester now.
I took the 98 Forester on sand and it did well, just make sure you air down the tires to 18psi and drive with smooth inputs.
#6 of 12 Re: Low speed engine noise [collinsjen]
Jan 30, 2012 (2:02 pm)
"... 2011 Forester premium with about 50,000 miles... Because of... some idiot at Walmart stripping the screw that lets the oil drain and my difficulties in getting this part... I am behind on an oil change. The oil level appears fine and there aren't lights... when I drive slowly, say 10-25 mph there is an engine rattle, especially if accelerating. There is nothing at rest or at normal speeds..."
How did you find out that Walmart stripped the drain plug?
Did that cause oil to leak?
If so, what happened next?
#7 of 12 low speed engine noise
Sep 11, 2012 (11:05 am)
When I am accelerating at low speed I hear a pinging or clacking noise. It is most prominent when the temp. is hot or humid. Could someone telll me what it is or help me because thus far the dealer cannot. My forester is a 2011.
#8 of 12 Re: low speed engine noise [byranj]
Sep 11, 2012 (11:37 am)
How many miles on the car? Sounds like a little bit of detonation. I would think the knock sensor would adjust the timing to compensate, but perhaps you're not getting a solid spark from your plugs.
I noticed the performance of my stock plugs started deteriorating the last six months I had them in the car. I put new plugs in it in July when I did its annual maintenance, and the issue was gone.
#9 of 12 Re: low speed engine noise [xwesx]
Sep 12, 2012 (10:35 am)
I have close to 20,000 miles on my 2011 Forester.
#10 of 12 Re: low speed engine noise [byranj]
Sep 12, 2012 (11:51 am)
That's pretty young; I wouldn't expect there to be a spark issue yet. Sounds like a job to be sorted out on warranty.
One other possibility.... air filter. If that hasn't been changed, the car's likely being starved for air under load at this point.
#11 of 12 Re: low speed engine noise [xwesx]
Sep 13, 2012 (10:49 am)
When you say " a job to be sorted out on warranty " what do you mean?
#12 of 12 Re: low speed engine noise [byranj]
Sep 13, 2012 (11:12 am)
I mean it that it sounds like something isn't working properly, but your car is still under warranty... so make it Subaru's problem instead of yours.