im sorry to be the one to tell you this... but that happened to me aswell... and it was right after doing a 3 layer MHG job on the car i did it all myself brought the block and head to be surfaced and all that good stuff and when the car was all together it started doing that so i drobve it for a few months and that just made it worse... i brought it to my machanic and he took a look at it and it turns out the pressure from the first start cracked my MHG and caused all of that bs your going through. SORRY AND GOOD LUCK!!
