A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Boost leak in the engine?

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Old

Jul 20, 2008 | 01:56 PM

#1

FrancoTheTanko

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Boost leak in the engine?

I've done multiple boost leak tests and found a couple by listening but the system is still leaking. The last time I tested it I felt a good amount of airflow coming out the pipe shown in the picture. Where could there be a leak that causes this? My mods are shown in my sig.<ul><li><a href="http://img237.imageshack.us/my.php?image=1311098vp2.jpg">http://img237.imageshack.us/my.php?image=1311098vp2.jpg</a</li></ul>

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Old

Jul 20, 2008 | 02:11 PM

#2

shawfm

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blow by on the piston rings is my first thought. I guess you should sell me the...

Racetec FMIC cheap and get out of that car quick.

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Old

Jul 20, 2008 | 02:38 PM

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beejohn

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when you check for boost leaks that pipe is suppose to be plugged

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Old

Jul 20, 2008 | 06:08 PM

#4

Joao

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Check your "L" Hose. Are you still with a stock BPV?

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Old

Jul 20, 2008 | 06:56 PM

#5

FrancoTheTanko

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I already replaced the "L" hose and I have a Forge 007 DV

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Old

Jul 20, 2008 | 07:01 PM

#6

FrancoTheTanko

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I did have the camshaft chain tensioner replaced recently. The engine was knocking like a mother.

Could some of the valves have gone bad from driving around with a bad tensioner?

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Old

Jul 20, 2008 | 07:10 PM

#7

FrancoTheTanko

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Are you sure? I've read a couple of DIY's that didnt say that.

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Old

Jul 20, 2008 | 07:18 PM

#8

FrancoTheTanko

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If you do, in my case, pressure will build up on top and come out the oil cap.

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Old

Jul 20, 2008 | 07:25 PM

#9

FrancoTheTanko

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I already replace the "L" hose and I have a Forge 007 DV which I just cleaned last week,

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Old

Jul 21, 2008 | 07:09 PM

#10

FrancoTheTanko

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BUMP

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