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Mechanical vs. Electric. Can anyone help me please! Although mechanical and electric fuel pumps each have their share of pros and cons, sometimes it all comes down to practicality. Re: Replacing Mechanical with an Electric Fuel Pump There are a multitude of Federal laws concerning the safe use and installation of electrical and fuel related items on enclosed gasoline engines.
For example, electrical items such as electric fuel pump … In my Clymer manual it does not show where this disc pad goes. But like any of your car's components, mechanical parts can wear down or break.Fortunately, replacing a broken fuel pump is a fairly simple task that you can accomplish at home in about an hour or two. Mechanical Fuel Pump vent tube. I also changed out the outlet fuel line. You need to do a fuel pressure test 1st before parts changing as IMO you need a complete carb overhaul You are looking for a fuel pressure of 4 psi min thru 7 psi for most stock marine carb engines. Going this route means upgrading your entire fuel pump system in one go, and you could take advantage of the opportunity to repair or replace some components as you go along. the mechanical pump is probably more reliable. After determining your fuel pressure is not or cannot hold You might be very surprised what it looks like internally. on the very bottom of the push rod not the sides of it!! “The obvious advantages of a mechanical pump are that they don’t make any noise and they … 2. if my block had provisions for mech pump i would put one on for backup. if wired to cg and abyc standards you will not fill your bilge with fuel. Your vehicle's mechanical fuel pump is a fairly reliable piece of low-tech equipment. This is a quick video about how to replace your mechanical fuel pump on a mercuiser 5.0. Also if your mech. Page 1 of 2 1 2 Next > Joined: Aug 2007 Posts: 952 ... Mercruiser uses a metal tube between the pump and carb for fuel and a cheap plastic hose for fumes and leakage. aint no way you can bend that drive rod. For those of you experiencing the low fuel pressure woes caused by failed fuel pumps from EPA mandated ethanol gasolines, here's the how-to on pump and regulator replacement for most EFI Mercruiser engines through serial 0M398371. Remove the mechanical pump and replace it with an electric pump: If you’re looking for a simpler solution, this is it. 861678A1 Marine Mechanical Fuel Pump Replacement for Mercruiser and OMC 5.0 5.7 305 350 198HP 230HP 260HP, Replace 97401A8 97401A2 18-7283 M60600 8M0058164 9-35423 Product Read more MPS Mechanical Fuel Pump for Mercruiser, OMC, Volvo Penta 2.5, 3.0 Engines. ! fuel pump is original I would change it out as well regardless. oil psi switch on block, a relay and wiring diagram in addition to pump. Re: Electric fuel pump swap for mercruiser 140 carter and holley make cg approved pumps. I am replacing a noisy electric fuel pump with a new mechanical pump on a 1990 7.4L Mercruiser sterndrive engine, and in the pushrod packet for the pump is a small disc like pad. SLOWLY rotate the engine by hand and feel the fuel pump push rod with one finger of the left hand. Mods should sticky this one please. Be careful where you put your finger!!! grease the drive rod with a heavy grease and reinsert it with the cam lobe on its heel. install the plug then the pump. Discussion in 'Gas Engines' started by missinginaction, Aug 2, 2014. thanks Re: Install mechanical fuel pump- mercruiser 357 A little trick you can do, using a socket and ratchet on the engine balancer. Re: Electric fuel pump conversion most the 7.4 motors with a mechanical pump on the block have a 3/8ths pipe plug just below the pump mounting flange, remove it,remove the drive rod.
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