bigbore1934 3 #1 Posted March 12, 2020 Just got my new diaphragm kit from THEN-NOW-AUTO installed the new diaphragm ,drainback valves and all,reinstalled it and let the gasket sealer dry....i tightened the screws what I would call tight,I didn't want to cut the rubber so I was cautious....well it sprayed gas clear out on the front tire! Should the screws be super tight? Taking it back off,I found it had put gas in the engine after only running for 30 seconds...it raised the oil level and ran out of the arm area of the fuel pump when I removed it... Is this an issue of just being to careful? I could find no flaws or damage to any of the parts. Share this post Link to post Share on other sites
briankd 819 #2 Posted March 13, 2020 (edited) 28 minutes ago, bigbore1934 said: Just got my new diaphragm kit from THEN-NOW-AUTO installed the new diaphragm ,drainback valves and all,reinstalled it and let the gasket sealer dry....i tightened the screws what I would call tight,I didn't want to cut the rubber so I was cautious....well it sprayed gas clear out on the front tire! Should the screws be super tight? Taking it back off,I found it had put gas in the engine after only running for 30 seconds...it raised the oil level and ran out of the arm area of the fuel pump when I removed it... Is this an issue of just being to careful? I could find no flaws or damage to any of the parts. i had an issue with their pump diaphragm my k 181 pulse pump worked fine but i got a diaphragm kit for my k 301 it had a lever on the diaphragm and it wouldn't pump after i installed it . i called them and they said to loosen the screws and then re tighten and never did work so i kept the old diaphragm in it .i never had gas to come out of mine on my k 181 it worked fine the screws shouldn't be super tight mine aluminum and was afraid of striping the threads out . that is weird that gas would come out lever hole after rebuild and diaphragm has no damage. i would think the diaphragm has a cut in it gas is only to be on one side of it if it goes thru it will go into crankcase Edited March 13, 2020 by briankd Share this post Link to post Share on other sites
The Tuul Crib 7,339 #3 Posted March 13, 2020 To I am myself recently got done rebuilding a 14 horse and made a mistake of putting a cheap Chinese fuel pump which drained gas into the crank case and did some damage. Since I have decided to go with an electric fuel pump. Instant starts every time. of course the original pumps are OK and work fine, but from now on I am sticking with electric . 3 Share this post Link to post Share on other sites
bigbore1934 3 #4 Posted March 15, 2020 So the company advised that I belt sand the aluminum housing until there is a flat mating surface...well I held it together over a light and it was crazy warped,so a little sanding and it fits together with no daylight! It's all reassembled and ready for try #2! Wish I had thought of that!😆 1 Share this post Link to post Share on other sites
