I had the exact same issue. We found that deteriorated cork from the fuel float was partially blocking the return tube. I drained the header tank then cleaned up the cork particles off the bottom of the tank. Problem solved. Good luck, Richard
--- On Sun, 10/26/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> Subject: Re: [ercoupe-tech] Fuel overflowing header tank To: [EMAIL PROTECTED] Cc: [email protected] Date: Sunday, October 26, 2008, 6:10 PM Richard, I had the same problem. Long story short...the overflow tube was partially blocked. I thought mine was open too even after "testing". I blew air through it, ran a wire through it and poured gas through it, all this of course while removed from the tank. But unless you can positively determine a flow rate (like xxx ounces per minute) and compare it to a new line of known value, I would consider it partially blocked and just replace it. IMHO, I think the chances of the overflow tube being blocked is much more likely than the restrictor hole somehow changing. The overflow tube in my tank is very close to the top, maybe 1/4"...never measured but you can't put your finger in the space. Darick Gundy Oct 20, 2008 07:11:03 PM, mcclurerichard@ att.net wrote: ============ ========= ========= ========= ==== I have a 415-C that is going back into the air soon. However, an issue has come up. During motor run-ups on the ground, the fuel is slowly overflowing out the header tank cap vent. I have checked the overflow line and it is completely open. It makes me think that the restricter hole is to big in the fuel pump. What diameter should the restricter hole be? Is there something else that can cause this problem that I should check? Is there a publication that shows what the restricter hole should be? Also, regarding the overflow line in the header tank, how close dimensionally should the tube be from the top of the tank. I can't imagine this being wrong because it is like it came from the factory. But I'm curious what the dimension is as mine is very close to the top. Any help is appreciated. Richard McClureN94004
