[urq] Sound under boost

[Brandon Rogers]

Have you tried pressure testing the intake system?  It usually hisses if you 
have a boost leak, no ticking, but it's the only thing I can think of right 
now...

Maybe double check your EM nuts - my front top one used to always back out - 
and after a while I think it ticks.....

Brandon
----- Original Message ----- 
From: "Andrew B" <andrew.sb at gmail.com>
To: <urq at audifans.com>
Sent: Wednesday, June 08, 2005 9:06 PM
Subject: [urq] Sound under boost


This is the last question of the night...I swear.

So after swapping heads and getting everything back together, I now
have a slight "ticking" or "spraying" sound under full boost.  It
occurs ONLY under full boost, and not at 5000 rpm with my foot halfway
on the throttle.

I've got several mods to the car, such as an internally adjustable
wastegate and heavier spring.  I've tightened all the spark plugs, I
just went through my exhaust (no change, including after I tightened a
key junction), I'm getting strong pull, and I haven't noticed anything
else very out of the ordinary.

I've never driven a turbo car before this one...could it just be the
wastegate kicking in and preventing overboost?  I thought it might be
exhaust gases escaping at first; as I said above while fooling with
the exhaust wrap I tightened the turbo-downpipe junction which had
loosened.  I don't see anything spraying inside the car, like oil or
coolant, or fuel for that matter.  I have lost a small amount of oil
since I changed it about 1000 miles or so ago.  Could I have vacuum
lines installed wrong, and maybe that's throwing off my boost
adjuster?

Does any of this sound familiar or make any sense to anybody?  I'm at
my knowledge limit- I don't know what else to try...maybe turning down
the boost on the internal adjuster?

-Andrew
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