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I bought a $10 Electric fuel pump off of amazon to empty the 80 gallons of gas that was in the tank and that thing was a champ. This so far has been a waste of cash and time. |
With SOME of the mechanical fuel pumps --- once you break away the diaphragm seal from the pump it is worthless ..
Just some other info --- the size of the needle and seat in the carb can effect fuel pressure -- higher or lower depending on size . fuel pressure regulators is always a good idea. plumbing, fuel filters . micron ratings also fuel set ups of routing / fittings / diameters and fuel lines can effect fuel pressure. Also Longer runs (length ) of fuel lines can decrease pressure. |
Originally Posted by BUP
(Post 4654750)
With SOME of the mechanical fuel pumps --- once you break away the diaphragm seal from the pump it is worthless ..
Just some other info --- the size of the needle and seat in the carb can effect fuel pressure -- higher or lower depending on size . fuel pressure regulators is always a good idea. plumbing, fuel filters . micron ratings also fuel set ups of routing / fittings / diameters and fuel lines can effect fuel pressure. Also Longer runs (length ) of fuel lines can decrease pressure. |
I was just short jisting info about fuel pressure for carb engines using mechanical pumps. What I was saying has nothing to do with pumping out fuel from tanks to empty them,
For sealant one has to use it for gas and Ethanol fuels to maintain a seal and acid free so it does not attack rubber and soft metals - alot of sealants are not rated for ALL THAT. |
https://cimg1.ibsrv.net/gimg/www.off...9f272ba82.jpeg The pump is actually only sold as the bottom half for this purpose. I’m looking into gasganinch to help seal it, reassemble, and give it one more shot. |
I have these as well but always wondered on the claims of output fuel flow ?
Post 12 in this thread https://www.offshoreonly.com/forums/...d-sealant.html |
a bit of what I was posting about
really do not feel like typing much today and here is the sealant ---- 2 of them for the diaphragm plus a tad of related info. This all I could find for now doing a quick search and it came up on youtube of all things. |
this to. READ POST 12 as I was saying for a jist and the diaphragm
I do not feel like typing so here was search I found basically what I was going to type all out. Glad I found this haha READ POST # 12 and if one wants to read the whole thread --- 2 pages of it but post # 12 read that . holley fuel pump issues | Page 2 | NastyZ28.com |
I used Permatex Aviation gasket sealer as I have that laying around and used the process lined out in post #12 and give that a shot and will report the results. Thanks BUP. |
After trying everything with zero luck I stuck the 15 year old Holley back on and it pumped like a champ. $300 in parts and fittings and worthless. |
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