Double Six Posted August 27, 2016 Share Posted August 27, 2016 Hey Guys,Is there anyway a externally mounted fuel pump will work with a TBI fuel system. ? Thanks , Double Six. :hmm: Link to comment Share on other sites More sharing options...
Double Six Posted August 30, 2016 Author Share Posted August 30, 2016 Come on guys, I need an answer to this Question if anyone knows!!! Link to comment Share on other sites More sharing options...
MJanky Posted August 30, 2016 Share Posted August 30, 2016 The short answer is you shouldn't, but if I knew why you want to it might change my answer Link to comment Share on other sites More sharing options...
Double Six Posted August 30, 2016 Author Share Posted August 30, 2016 one reason is they are easier to deal with and you don't have to fight with trying to get the things in and out of the tanks. I have always thought that was a bad idea to put something electrical inside a gas tank .If it won't work why want it? Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 30, 2016 Share Posted August 30, 2016 one reason is they are easier to deal with and you don't have to fight with trying to get the things in and out of the tanks. I have always thought that was a bad idea to put something electrical inside a gas tank .If it won't work why want it? Huh? Link to comment Share on other sites More sharing options...
MJanky Posted August 30, 2016 Share Posted August 30, 2016 I don't suggest you try it. I don't know what your skill level is but unless you really know what you're doing it is unlikely you will end up with a system as safe or reliable as the factory design. An in tank pump might appear unsafe but there is no oxygen when the tank is sealed, the danger is while servicing them and care must be taken. An external pump is actually more prone to disaster if not installed in a safe manner. I'm personally not a proponent of fuel injection for various reasons but if I were to use it I'd accept the fuel pump the way it is as the best design. Link to comment Share on other sites More sharing options...
mikekaz1 Posted August 30, 2016 Share Posted August 30, 2016 they've used in tank pumps for decades on millions if not billions of cars. if it was a bad design they wouldn't do it. external fuel pumps, even well done always seem like a hack to me. Link to comment Share on other sites More sharing options...
gogmorgo Posted August 30, 2016 Share Posted August 30, 2016 Changing the fuel pump in an MJ isn't even a huge project. I did one in the alley behind a strip mall across from my hotel a couple weeks ago, took less than two hours, including figuring out how to adapt the stupid Delphi pump (if I did it again I'd go for the Bosch). Just make sure you have under a half-tank of gas before you start and you're golden. Everything comes out the side of the tank, and I didn't even need to get the truck in the air, or even drop the tank. Link to comment Share on other sites More sharing options...
Double Six Posted August 30, 2016 Author Share Posted August 30, 2016 Okay,not what I wanted to hear but I suppose I will put a new one in the tank.. I just thought it would work ,they use external ones on fuel injected race cars.,mounted on fenders under the hood or somewhere along the frame rails. Thanks for the info,Double Six. Link to comment Share on other sites More sharing options...
gogmorgo Posted August 31, 2016 Share Posted August 31, 2016 Don't do it if you really don't want to. No one here is going to stop you from doing what you want on your own truck. Race cars use them mostly to make it easier to change them out in a hurry. That's really the only advantage, and they also don't have the best longevity in road cars because they aren't as easy to keep cool as an in-tank pump, especially when you see low speeds with not much airflow. And frankly, how often do you need to change the fuel pump? The one I pulled out a couple weeks ago was old enough the original ones were still in production when it went in, if it wasn't the original pump itself... But you do you. It's not necessarily a bad idea to go to an external pump, we just don't really see the point. Link to comment Share on other sites More sharing options...
Knucklehead97 Posted August 31, 2016 Share Posted August 31, 2016 On my 4×4 MJ I can (and have) changed the fuel pump in 30 minutes flat. Right on the side of the tank and very easy to get to. Unless it's a 2wd. My 2wd's driveshaft is so freaking big compared to the 4×4 one so it would take longer. Link to comment Share on other sites More sharing options...
Marine1Texas Posted August 31, 2016 Share Posted August 31, 2016 It don't take long to change out. If you go with a external you will have to go in the tank anyway to remove the old pump, then you have to design it to work with your float. If your going in the tank anyway just leave it. I only change the thing about every 12 to 15 years. Link to comment Share on other sites More sharing options...
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