vacumm leak iacv help!
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vacumm leak iacv help!
ok so i have a boosted b20 that originally had an ls head on it. i jus switched over to a b16 head now when i start the car i have a high pitched whistle...(vacumm leak) and i found that it is coming from the iac valve. thats where the noise is the loudest and i sprayed all the vacumm areas with carb cleaner and when i spray the area that the iac meets the IM the tone changes noticably. i switched iac valves with an extra i had around and the tone got worse.. im out of ideas can anyone help please!!!!
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