10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH3.4 cylinderhead
Leading reported evidence
Replace pads
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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Leading evidence: 'Replace pads' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant channels' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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Performed · outcome unconfirmed · Original poster
I have changed the waterpump and the impeller was fine.
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Suggestion · Original poster
Cleaning is not my main consenern, i was just wondering that should i take the head of and check the coolant channels.
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Suggestion · Original poster
It won't wipe clean, I tryed to scratc it of with a flat screwdriver and nothing.
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Suggestion · Original poster
Now i noticed that the sparkplug hole on the cyl 2 had slight colour change (yellow).
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
So, I was taking my 1-3 cyl.head apart today.
Plan was to change the variocam pads for this side. I all ready have changed the pads for 4-6 head.
Now i noticed that the sparkplug hole on the cyl 2 had slight colour change (yellow).
The sparkplug tube had leaked a litle, so could it be burned oil?
Other than this and the pad's the head looked like new.
I have changed the waterpump and the impeller was fine.
You can see it in the picture, thou the oil on it makes it look more yellow that it really is.
Yes it is probably cooked oil like a chinese wok looks when it has been seasoned by burning oil onto the metal surface. I can't think of anything else it would be either.
Don't try the below with your car
The first video at 2:30 you'll see the same color
http://www.youtube.com/watch?v=hNPe5...eature=related
This lady uses a short cut skipping the yellowish color of burned oil.
http://www.youtube.com/watch?v=nDp_2x9kE8o
Baked on like laquer then probably.
I'm not sure if some of the industrial kitchen copper cleaners would eat that stuff off. I know its good for tarnish. I'd try q-tips with a cleaner on the spot. I believe hydrogen peroxide might be one NOT to try since I kinda recall it turns the metal black while eating metal.
tough call... can you run a leak down on it? and or compression test
most likely its just from a leaking spark plug tube and no big deal, but it would be a lot easier to fix it now then after you put the motor back in
I am one of the guys with the thinking of "while you are there", but I would not mess with it. I don't think you will find anything in the coolant channels.
Rick
99 996C4
87 944S
I pulled the engine for IMS, RMS (did not leak) and the variocam pads. It had full power and no problems with losing water.
Have anyone seen something like this before?
I get the parts next week so I'm in no rush with this one.
A few times I've engines with discolored areas such that you illustrate. I dont think its anything to worry about.
Just have a look at the top of the piston with a flashlight or bend-a-light and compare it to the others. If they all appear the same, I wouldnt worry too much about it.
http://www.steelmantools.com/10150A.htm
This is a source reference. Confirm exact model applicability in the original material.
