10-28-2018, 10:28 AM
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#1
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Registered User
Join Date: Dec 2016
Location: New York
Posts: 89
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Oil Change - Your Thoughts on Brown Solid Particles?
Looking to the group here for a little guidance. I changed the oil in my car yesterday and performed an inspection of the filter element. The good news is that a very thorough inspection finds absolutely no visible metal particles. But, I did notice about 10-12 dark brown hard particles that appear to be a form of plastic or Bakelite type material. Most, if not all, had rounded edges as seen in the picture attached. I know a lot of people have much more experience than I do with this, so any thoughts on what this could be would be helpful. Additionally, any preventative actions I should take would be appreciated.
Thanks
Joe
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2002 Boxster 2.7 Lapis Blue
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10-28-2018, 10:54 AM
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#2
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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I need a dry close up but you might be looking at vario cam chain pad particles
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986 00S
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10-28-2018, 02:09 PM
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#3
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Artist, 986S tinkerer
Join Date: Aug 2013
Location: Montreal, Canada
Posts: 1,821
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Well, if they’re not bedbugs, they’re probably chain pad bits, like jaykay said. You may want to check your camshaft deviation readings.
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James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow!
Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
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10-28-2018, 02:18 PM
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#4
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Registered User
Join Date: Aug 2009
Posts: 1,466
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Chain guide ramps, or as the other said +1 with Newart
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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10-28-2018, 06:04 PM
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#5
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Registered User
Join Date: Dec 2016
Location: New York
Posts: 89
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Thanks to all for your advice. I’ll provide an update after I get camshaft deviation readings checked.
Joe
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2002 Boxster 2.7 Lapis Blue
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10-28-2018, 08:44 PM
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#6
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Registered User
Join Date: Sep 2009
Location: toronto
Posts: 2,668
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How many kilometres.....sorry miles / hours on the engine? You will likely not get an out of spec deviation if this is the first instance of particles.
When I had paper oil filters....I found that use of 0W40 yielded quite a few of these particles early in my engine's life....later after switching to 5W40 the number of these particles were reduced.
Driving style could affect this wear. IIRC theses pads are significantly more loaded under 3000 RPM and that this wear condition changes every time the 3K threshold is crossed (early 5-chain motors). There should be plenty of anecdotes from M96 engine experts here.
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986 00S
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10-29-2018, 07:29 AM
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#7
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Registered User
Join Date: Dec 2016
Location: New York
Posts: 89
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JayKay - it’s a 2002, 2.7 model with 48,105 miles on the engine. It runs very well and I’ve had only one instance where it mis-fired while driving at around 2,800-3,000 rpm. That was about 700-1,000 miles ago. I use Motul full synthetic 5W40 motor oil and this is the first time seeing these particles.
Joe
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2002 Boxster 2.7 Lapis Blue
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10-31-2018, 09:26 PM
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#8
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Registered User
Join Date: Jul 2007
Location: Seattle
Posts: 94
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Light or dark brown particles are varicam glides/pads. They can be replaced by taking off the cam covers. Some have done that with the engine in car but most drop the engine and replace.
Black color particles are the chain tensioner pads. The IMS Shaft to cam tensioner pads on each bank can be replaced (2 on each bank) and the engine will need to be removed. The Ctankshaft to IMS chain tensioner pad cannot be replaced without a total dismantle of the engine.
Check your cam angles and drop your oil pan and take a closer look inside the sump for more debris.
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K Brandsma
98' Porsche Boxster
Last edited by kbrandsma; 11-01-2018 at 07:18 AM.
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10-31-2018, 10:56 PM
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#9
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ISSIMI
Join Date: Apr 2017
Location: Bay Area CA
Posts: 146
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The first oil change i did to my 2000 S had those brown specs. Never saw any debris on any future oil changes though. 100k miles. Used mobil 0w40 and now using 10w40.
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11-01-2018, 05:22 AM
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#10
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Registered User
Join Date: Sep 2010
Location: Foster City CA
Posts: 1,099
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Several questions b/c my 986 with 165K miles had black particles in the sump. Cam deviatons are -3 and -5, with the latter having increased -2 over the past 40K miles.
1) do all the tensioner rails tend to wear evenly?
2) if not, which ones wear the most - crankshaft to cam or IMS?
3) Can one inspect the tensioners, especially the IMS tensioner, pads w/o having to split the engine case?
4) If so, how does one do these inspections. What must come off to gain access
Asking b/c if I can see the IMS tensioner has a lot of life left in it, then the cost to repair may be worth keeping the car
Thanks
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'87 951
'01S 986 (Sold after 16 years ownership)
'78 924 (carburated; sold when moving to CA)
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11-01-2018, 07:59 AM
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#11
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Registered User
Join Date: Jul 2007
Location: Seattle
Posts: 94
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Quote:
Originally Posted by thom4782
Several questions b/c my 986 with 165K miles had black particles in the sump. Cam deviatons are -3 and -5, with the latter having increased -2 over the past 40K miles.
1) do all the tensioner rails tend to wear evenly?
2) if not, which ones wear the most - crankshaft to cam or IMS?
3) Can one inspect the tensioners, especially the IMS tensioner, pads w/o having to split the engine case?
4) If so, how does one do these inspections. What must come off to gain access
Asking b/c if I can see the IMS tensioner has a lot of life left in it, then the cost to repair may be worth keeping the car
Thanks
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That's the $64K question. I had 184K on the clock on MY98 and my cam angles were off the chart. Checking my oil sump, I found brown and dark brown, but no black pads or glide particles. I dropped the engine, removed cam covers, and in bank 2, there was no actuator pad and the chain was metal to metal with the actuator. I elected to change all of the pads and glides, except IMS glide. The other tensioner glides while showing some where were in pretty good shape so I am assumed that the IMS glide was in similar condition. I also changed the tensioner and timing chain on Bank 2 ($ouch), since their was extensive wear.
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K Brandsma
98' Porsche Boxster
Last edited by kbrandsma; 11-01-2018 at 12:00 PM.
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