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hissing noise on idle

turbolearner

Trainee
Joined
1 Aug 2013
Messages
72
Hi All,

got a slight issue, no CEL or lumpy idle, still boost to 0.6/0.7

where the 2 diverter valves there is a hissing air noise, if you move the diverter valves around the noise changes, nothing looks off.

Have had 2 diverter valves, new pipe for and the other f type pipe. this was done 2 weeks ago, as the old ones were faulty, while at it got the pipes to them changed, as they looked worn.

This noise i 1st heard on Saturday.

when i take off one of the vac pipes of the valves the pressure it is sucking in, seems very high, it's like it's trying to open the valves on idle. Is this correct?

could a pipe have come off somewhere making this. The air noise is just a little lower in volume than the rear lid fan.

Thanks in advance.
 

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