When we had this issue arise two weeks ago, he manually checked pressure and told me it was fine. He said the solenoid so I did the gaskets thinking it was clogged (he never told me how they looked) and that all seemed to fix it fine temporarily. Vtec I can hear hit and all, but I don't feel like it pulls as hard as it should, if that makes sense. At around 4500 I can hear it, but I don't feel that intense pull anymore, although it's pullnig a bit harder than normal.