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Oil leak?

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Old 09-09-15, 06:08 PM   #1
Jbthompson
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Default Oil leak?

Hi everyone. I recently had to replace my ignition coil on cylinder 8 and ended up replacing all of my spark plugs. I noticed last night what looked like smoke coming out of the engine area. This afternoon I noticed my car has developed an oil leak. It looks like oil is seeping out along the even sided cylinder bank. Did I miss something? Is there a seal that needs to be replaced? Ugh.
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Old 09-09-15, 06:12 PM   #2
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Valve cover gasket and spark plug tube seals probably need to be replaced. What year? Read this: https://www.clublexus.com/forums/ls-...tube-seal.html
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Old 09-09-15, 06:18 PM   #3
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Thanks Tom. It's a 2001 with 109k miles. The spark plug seals looked ok visually.
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Old 09-09-15, 07:43 PM   #4
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Jb, you wouldn't be able to visually inspect the spark plug seals during a spark plug change since they are under the valve covers. See https://www.clublexus.com/forums/ls-...-question.html
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Old 09-09-15, 07:46 PM   #5
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Quote:
Originally Posted by Tom57 View Post
Jb, you wouldn't be able to visually inspect the spark plug seals during a spark plug change since they are under the valve covers. See https://www.clublexus.com/forums/ls-...-question.html
Yes my bad thanks tom. I was referring to the rubber seals on the ignition coil. Is changing the valve covers a difficult job?
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Old 09-09-15, 07:49 PM   #6
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No, you can do one side at a time. See the link. It's very straight-forward. There are diagrams and torque specs in the link too.
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Old 09-09-15, 08:00 PM   #7
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You should definitely identify the source of the leak. While your '01 doesn't have high mileage, the age of the gaskets (15+ years) in a high heat area are likely to be somewhat brittle. You might be lucky enough to find a few valve cover bolts loose. You could first try slightly tightening them (from center of cover out to the ends) to original torque spec. Do NOT overtighten.
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