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Old 11-17-2013, 11:42 PM
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Diesel911 Diesel911 is offline
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Location: Long Beach,CA
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If Fuel and Oil seep down between the Threads and into the space that is under there the shock of the vibration of the Fuel being injected and the Combustion cause little bubbles.

If you keep spraying that area with Brake Cleaner diluting what is down there and sopping it up and spraying eventually you will sop up and dilute enough that it will dry up or the level will be so low it won't bubble.

If you have a real compression leak from the Heat Shield or the Pre-chamber what comes out has more volume and velocity to it.

However, you missed one. If the Injector Nut develops a hairline crack it will indeed leak Fuel down in that area below the prechamber Ring.
84 300D, 82 Volvo 244Gl Diesel
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