2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

What could it be?

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Old Apr 15, 2023 | 12:45 PM
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AfterShok's Avatar
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From: Ontario
What could it be?

So I've owned my LNF for over 10 years and I got my engine compression and leak down tested in 2022/2023. The results were the following (double checked at a shop because I thought I performed it wrong)

180psi across all 4 cyl
< 5% leak in cyl 1,3,4
~30% leak in cyl 2

6758, FBO, stock motor with a replaced timing chain as of 20k kms ago

Car pulls hard and runs smooth with no sign of issues. Logs look normal for the most part.

Without tearing into the engine (Will be rebuilding it when i get more parts stock piled) what could my options be for what could be an issue?
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Old Apr 15, 2023 | 01:42 PM
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Pull the valve cover and make sure a Rocker arm hasn't moved on cylinder 2.

Have you performed an intake runner cleaning?
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Old Apr 15, 2023 | 05:56 PM
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AfterShok's Avatar
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From: Ontario
Originally Posted by ECaulk
Pull the valve cover and make sure a Rocker arm hasn't moved on cylinder 2.

Have you performed an intake runner cleaning?
I got my intake valves done in 2022 as in 2021 I had a horrible result in like two cylinders failing the leak down. This cleared the one but the one still has a slight issue.

I've never pulled my valve cover before lol do I need to replace the Gasket? It was replaced last 20k kms ago
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Old Apr 16, 2023 | 02:17 PM
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Not likely you'll need to replace it, might want to rtv the corners/sharp bends to be sure it doesn't leak
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