I went to replace the water hose and replace the head cover gasket at the request of the customer.
When any procedures requiring to install the intake
manifold, and I heard a strange sound.
When I look into the surge tank, funnel was lying.
The condition was that it was confirmed, adhesives funnel all deteriorated, can turn by hand.
The adhesive is applied to, I fixed the funnel.
456GT of all, this problem can occur in 550,575,612.