noise from engine bay

[Stig]

Hi folks,

not been around for a while as I've been a bit too busy at home

I took the cam out yesterday and it seems to have developed a high pitched whistling noise thats cooming from around the injection area.

I believe its a leak on the vacuum side but can't find it.

Anyone any ideas on what to check, how to check it. What can I spray around under there to identify where its a problem

thanks for the help in advance
cheers
Paul

[Jezza_hr]

put some washing up liquid around the gasket, if it starts bubbling anywhere, you should find the culprit.

Is it idling rough at all?

[Stig]

idling sometimes is a bit arratic... a bit lumpy is the best way to describe it

[Jezza_hr]

since you did the cam or before aswell? usually an eratic idle (mild seeking) is a vacuum leak. so do a bit of checking and see what you can find.

[Stig]

sorry for the confusion....need to get my wording right

Cam=car=Twincam ....Not camshaft in this case

Car is as left factory and is untouched apart for the belt being replaced by a local mechanic a year or so ago. Noise wasn't there until recent

I'll have a mess around under the bonnet with the washing up liquid and see what I can find

thanks for your help

[jondee86]

If it is a vacuum leak, use a lot of soap, as you will need to watch
the exhaust pipe for bubbles

For a vacuum leak you should use "engine start" and spray it around
the manifold to see if the idle speed increases.

Cheers... jondee86

[Jezza_hr]

Stig Wrote:sorry for the confusion....need to get my wording right

Cam=car=Twincam ....Not camshaft in this case

Car is as left factory and is untouched apart for the belt being replaced by a local mechanic a year or so ago. Noise wasn't there until recent

I'll have a mess around under the bonnet with the washing up liquid and see what I can find

thanks for your help

I did wonder why you had just taken out a cam

Make sure to check all your vacuum pipes for severance, the slightest cut on a pipe can cause problems, especially under acceleration.

Was it lumpy before the noise developed?

[Stig]

Tried the soap last weekend....no respose. Looks like I'll have to try some engine start and see if the revs increase