Popping like sound

[Unilevers]

(03-12-2016 )gearhead Wrote:  It's for sure intake valve? I wonder if jake plunger is getting stuck and holding a valve open.

i too thought this, but he has had a mechanic in the top end 3 times and they say it is all good. im assuming that they are telling the truth on this matter and the noise does definatly sound like a intake pulse