M119 valve switching sound after 2 minuntes

[Twilling]

Hi All,

I´m just curious. After cold start the M119 engine runs little noiser (little ticking) on the oilfilter side/ passenger bank side. But after 2 minutes a valve or something like that swichtes and the engine is instantly more quietly. Could it be the valve in the oil filter housing?

thx,
Martin

 

[gsxr]

Are you sure it isn't the air pump, which is located above the oil filter housing? This runs for about 2 minutes after a cold start, and old ones may not be very quiet. If you have an SDS you can manually turn it on so you can hear what it sounds like.

 

[Twilling]

Yeah...could be...I´ll have look...Thx mate

 

[Twilling]

It is indeed the Smog Air Pump which makes that noise. Looks still like the first pump but strangely enough it is a Denso 0001402685 air pump and not a 119140xx85