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click sound from intake manifold during cold start

 
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Old 07-13-2010, 05:57 AM
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click sound from intake manifold during cold start

Just got my JDM H22A swap finished..anyway, when i first start it up, it revs normal for a cold start about 2 grand..i've noticed that when i rev it just a little, it revs then i hear a click sound from intake mani then revs about 200 rpms more..only during a cold start though..after it runs for awhile, it doesnt have that click sound and revs normally when i push the gas..for example, if its revving at 1500 during a cold start, then i push the gas pedal just slightly, it revs to 2000,*click sound*, then another 200 rpms..it happens a lot faster though with no break in between..im thinking a plate of some sort in the intake mani is stuck open a little longer..maybe ill try a carb cleaner of some sort but would like to know if anyone else has experienced this and what they did to solve it.thanks..
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Old 07-13-2010, 07:21 PM
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Re: click sound from intake manifold during cold start

the throttle body plate can stick due to build up of junk. Maybe its sticking long enough then popping open and sucking air in all of a sudden and thats what creates the rev fluctuation. just take off the pipe going into the throttle body and see if there is build up on the throttle plate.
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I agree with camshafted on this one.

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Old 07-13-2010, 09:44 PM
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Re: click sound from intake manifold during cold start

i took off my intake piping and revved it and it sounds like a stuck valve that isnt closing fast enough coming from the two holes in the throttle body..is it the FITV?
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