Second time in the morning it’s done this started up it stumbles and won’t stay running. I removed the intercooler pipe on the driver side to the engine and it will start and run fine as soon as I hook the pipe back up the pipe is squeezed into a vacuum and makes the car stall. I do not have a PCV valve it was deleted and a month or so ago I had replaced the valve cover due to it leaking oil into the intercooler.
any ideas as to what could cause this??