Guys I know this is an older thread but I'm trying to figure out thenissue with my H82. I picked this up for 50 bucks (right place. Right time) and had to fix a broken fuel line. Other than cleaning the sediment bowl everythign was working great till yesterday. I heat my garage with it, and I had it running basically all day. I was working on a snowblower when it started making a noise. I wouldnt call it a click, more of a buzzing sound. It would go buzz, buzz, buzz and cycle off. After the third time i walked over to it, and watched. When it was buzzing, the fuel pressure gauge would flop around wildly then down to where it sets when the burner is off. I watched through the sight glass and when it buzzed the flame was intermently going off and on. Ive had it a month or so, burned probably 1 tank of diesel through it. Recently got some fuel oil from someone switching to natural gas, and it just started acting up. I doubt the fuel has anything to do with it because it burns just fine. I fear it has something to do with igniters or transformer, just hoping someone has had the same experience......