yeah slk230red, i removed that filter and checked it. It wasn't blocked. The fuel accumulator diaphram has not been checked. How would you test it to see if it was good or needs to be replaced? And also thinking about it, that filter was on the return side of the distribution. Is that the correct side? I was kinda baffled on why it was on the return and not the feed side. Maybe you could enlighten me on that. Thanks