cod 121 #1 Posted June 26, 2022 35 year old fuel pump on my 418. So far it starts right up with a minimal amount of cranking. If the pump starts to go have any of you noticed how it was acting prior to failure? When it goes, I'll switch to one of the electric pump setups and probably a primer bulb as well. Thanks! Share this post Link to post Share on other sites
Snoopy11 5,718 #2 Posted June 26, 2022 My experience in a nutshell... 1 minute ago, cod said: how it was acting prior to failure Until it dies... Don Share this post Link to post Share on other sites
rmaynard 16,297 #3 Posted June 26, 2022 If you think you are having a problem with the pump, why wait until it fails? Replace it now. Also, why would you need a primer with an electric pump? 2 Share this post Link to post Share on other sites
Snoopy11 5,718 #4 Posted June 26, 2022 4 minutes ago, rmaynard said: If you think you are having a problem with the pump, why wait until it fails? Replace it now. My thoughts exactly... Don 1 Share this post Link to post Share on other sites
ri702bill 9,414 #5 Posted June 26, 2022 I agree with @rmaynard - if you go with an electric pump, no primer is needed. A word of caution - when (not if) the diaphgram fails, it will dump raw gasoline into the crankcase - diluting the oil to a point where BAD things happen - time to go ... 1 Share this post Link to post Share on other sites
cod 121 #6 Posted June 26, 2022 Thanks guys. Never occurred to me that the bulb would be unnecessary and not thrilled with the idea that it would gas into the crankcase. Time to revisit some of the electric pumps threads. Share this post Link to post Share on other sites
RED-Z06 2,568 #7 Posted June 27, 2022 My 416, onan...1993 model, last year it just failed, was running then acted low on gas then died...no restart. Replaced with an oem style pump and off it went Share this post Link to post Share on other sites
peter lena 9,271 #8 Posted June 27, 2022 @RED-Z06https://www.amazon.com/CarBole-Universal-2-3-5P-S-I-Operating-Self-Priming/dp/B01IR6BNKY/ref=sr_1_3?, been using this a couple of years now , very quiet and reliable , this is the low pressure type you want . also added a fuel check valve to this just before carb , very good , pete Share this post Link to post Share on other sites
peter lena 9,271 #9 Posted June 27, 2022 @RED-Z06 https://www.amazon.com/EVIL-ENERGY-Return-Petrol-Aluminium/dp/B08JJ128LN?th=1 have this mounted just afrer fuel pump discharge , just VERTICALLY before carb , for instant fuel holding charge . lots of hours , instant starts , no issues , pete Share this post Link to post Share on other sites
RED-Z06 2,568 #10 Posted June 27, 2022 7 minutes ago, peter lena said: @RED-Z06 https://www.amazon.com/EVIL-ENERGY-Return-Petrol-Aluminium/dp/B08JJ128LN?th=1 have this mounted just afrer fuel pump discharge , just VERTICALLY before carb , for instant fuel holding charge . lots of hours , instant starts , no issues , pete I put one of these on my 312 and loved it for about 10 hours of use then it shut down, pump wasnt pumping and my discharge side has plastic in it (not the inlet) so something came apart inside. Hooked up my old manual pump and went back to work. I put one of the metal solenoid style pumps on my generator and its been great, just chatters but thats the nature of them. Share this post Link to post Share on other sites
peter lena 9,271 #11 Posted June 27, 2022 @RED-Z06 never had an issue with it , thats why I recommended it , have the same set up on 3 horses , wish you had a better experience , pete Share this post Link to post Share on other sites
RED-Z06 2,568 #12 Posted June 27, 2022 4 hours ago, peter lena said: @RED-Z06 never had an issue with it , thats why I recommended it , have the same set up on 3 horses , wish you had a better experience , pete Eh, it wasnt too bad, spent more time mounting and wiring it cleanly to switched power than i did removing it, but I was thankful the mechanical pump was there or id have been pushing about 1/4 mile home. 1 Share this post Link to post Share on other sites
