Slight whistling sound from engine at idle
#1
#2
This is where the fun begins.
It could be any number of things, and there a many, many areas.
Some I have experienced are:
Vac hoses, and on a Marelli, there will be many. ONE at a time diagnosis is the only way here I am afraid.
Throttle body to inlet gaskets.
Throttle body to air filter base gaskets.
Throttle disc whistle, that was one car only, but it took some finding.
The hoses on the AAV do split, and they would whistle.
Inlet manifold to cylinder head gaskets.
Injector lower (small) seals.
The seals on the throttle shafts in the throttle bodies.
The PCV plumbing, as in hoses and/or the valve itself.
The hoses at the rear of the RH inlet manifold that supply vac to the trans modulator, and the climate system.
The gaskets on the 4 end plates of the 2 inlet manifolds.
Vac blanking plugs under each throttle body.
The list goes on, but I think you get the drift.
It could be any number of things, and there a many, many areas.
Some I have experienced are:
Vac hoses, and on a Marelli, there will be many. ONE at a time diagnosis is the only way here I am afraid.
Throttle body to inlet gaskets.
Throttle body to air filter base gaskets.
Throttle disc whistle, that was one car only, but it took some finding.
The hoses on the AAV do split, and they would whistle.
Inlet manifold to cylinder head gaskets.
Injector lower (small) seals.
The seals on the throttle shafts in the throttle bodies.
The PCV plumbing, as in hoses and/or the valve itself.
The hoses at the rear of the RH inlet manifold that supply vac to the trans modulator, and the climate system.
The gaskets on the 4 end plates of the 2 inlet manifolds.
Vac blanking plugs under each throttle body.
The list goes on, but I think you get the drift.
#4
#5
Dude...Who are you!!!!! Thanks....who knew a garden hose can work such wonders! I've located the sound....but I still have to find the exact problem. Sounds like a cracked vacuum...but we'll see thanks again.
One more question....I am going to tune this motor up this weekend. Is there a thread that lists the recommended parts needed?
One more question....I am going to tune this motor up this weekend. Is there a thread that lists the recommended parts needed?
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scottatl
XK8 / XKR ( X100 )
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09-04-2015 08:08 PM
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