MarkFoster 0 Posted June 3, 2011 Morning all I'm hoping some of the resident big brains on here might be able to offer some advice on a non-corrado engine problem. My brother has one of those diesel escort vans (a truly thrilling drive!) which has developed an oil leak. He recently had the sump replaced and we thought that perhaps the seal hadn't been properly installed. So, he took it back to the garage who claimed it wouldn't be that and after a bit of fiddling, announced that the engine was 'blocked'(?). They took the oil cap off and showed him there was quite a lot of air blowing from it and then disconnected some breather pipes to show there was no air coming from them which there apparently should be. Is it plausible for these airways to become blocked causing enough pressure to force oil past the sump gasket? What is it that could cause the blockage, sediment in the oil or fuel?? As always, any advice is much appreciated. Mark Quote Share this post Link to post Share on other sites
boost monkey 0 Posted June 3, 2011 sounds like the PCV (positive crankcase ventilation) circuit isn't working very well. All engines have them, it stops pressure building up underneath the pistons as they pump up and down. So yeah, sounds like the airways are blocked although I have no idea how that could happen. Best bet is probably buying a Haynes and doing a little experimenting. Quote Share this post Link to post Share on other sites
