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Author Topic: Vacuum leak or not? Sucking sound but carb cleaner doesn't affect idle. Yours?  (Read 783 times)

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car5car

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Vacuum leak or not? Sucking sound but carb cleaner doesn't affect idle. Yours?
« on: 19 June 2014, 16:05:27 »
Is there sucking sound under hood(bonnet) of your car? 3.0 engine.
Thanks.
I was replacing valve cover gaskets and after I put everything back together noticed the sound. I don't know if it was there before. Engine runs fine, no codes. About 590-600 idle RPM, is it normal?
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zirk

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Re: Vacuum leak or not? Sucking sound but carb cleaner doesn't affect idle. Yours?
« Reply #1 on: 19 June 2014, 17:22:20 »
Penlium back on properly? or Inlet Pipe creased and not on fully before Throttle Bodies.?
« Last Edit: 19 June 2014, 17:24:07 by zirk »
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Entwood

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Re: Vacuum leak or not? Sucking sound but carb cleaner doesn't affect idle. Yours?
« Reply #2 on: 19 June 2014, 18:00:46 »
You say you've used carb cleaner in the heading , but don't say how in the text ....

lightly spray carb cleaner around while the engine is running, when the revs suddenly rise you've found the suction point !! make sure the carb cleaner is directed along all joint areas so it has a chance of being sucked in ... (the carb cleaner is being burned as unmetered fuel ). Fix leak, wipe engine down .. result a nice clean properly working engine ...  Sorted :)
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