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Fuel pump aftermarket part numbers

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  • I'd be worried that, for some reason, the system isn't holding pressure and as soon as the engine turns off, the rail is depressurized. Leak in the line somewhere, maybe, or perhaps a faulty pump. I'd try to diagnose that by putting a fuel pressure gauge on the fuel rail and seeing what happens to the fuel pressure at key-on and key-off.
    '04 MariStar 230VRS/MCX

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    • Andre
      BigMac is right it is most probably a leak in the connection from the pump to the top of the module. He should triple check those. Sounds like the prime is being lost each time the key is turned off. It has happened to quite a few people on this board who have changed out the pump. Each time it was the connections(fuel line of course not the electrical).
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      • Just bought AC Delco ep356 to replace the stock carter fuel pump in my 06' 197 with MCX engine. Any advice or tricks I need to know for installation?

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        • Be careful with the fuel line that goes from the old pump to the regulator inlet - you'll need to re-use it. Detach if from the old pump and reattach it to the new one.
          '04 MariStar 230VRS/MCX

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          • Has anyone used this Gates in tank fuel hose? I noticed a post somewhere that it was bought from Napa. It is about $17 per foot. It comes in a 5/16" ID. I was curious if it would fit the 1/4" fitting on the regulator. Also, how flexible is it?
            Common sense is the least common of all the senses.

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            • Originally posted by boofer View Post
              Has anyone used this Gates in tank fuel hose? I noticed a post somewhere that it was bought from Napa. It is about $17 per foot. It comes in a 5/16" ID. I was curious if it would fit the 1/4" fitting on the regulator. Also, how flexible is it?
              According to Stu, it will blow off the end of the barb.
              '04 MariStar 230VRS/MCX

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              • Maybe it will work if its much more soft/compressible/squishy than the 5/16 ID fuel injection hose I got at autoparts store.

                5/16 ID fuel injection hose would not blow off necessarily, but would surely leak, IMHO. You probably just can't get the larger inner diameter to uniformly compress around the 1/4 barb. There will be a fold.

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                • I sure wish someone else would try to put 5/16 ID fuel injection hose on a 1/4 barb to either back me up or put me in the dog house.

                  By the way, the service mgr at my MC dealer asked how my fuel pump change went, and I told him it was fine but mentioned the submersible-hose issue. He said that if you get a year out of it you're ahead since 500+ bucks on a new, whole module. But I still want to put proper submersible hose in if we can make it work.
                  Last edited by stu; 08-05-2009, 04:53 PM.

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                  • I haven't really looked at the unit, because I haven't had mine out.. But is it possible to replace the 1/4 inch barb with a 5/16? I realize it connects to the short 90 degree bend that ends in a quick disconnect fuel fitting outside the tank. Can that whole piece be re-made and sealed up in the top of the module? Is the factory 1/4 barb plastic or metal??

                    dave

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                    • The 1/4" barb is plastic. When I replaced the entire module I forgot to notice if the new module had a different sized regulator connection since the hose is different (clear corrugated vs hard plastic).
                      Common sense is the least common of all the senses.

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                      • Thanks for the tip bigmac, I'll let you all know how it turns out.

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                        • G'day.
                          Looking for assistance with regard to the "possible" failure of my fuel pump. It seems that all the replacement pump model numbers (e.g. EP356), that are listed within this thread don't cross reference here down under. Is there any where like Skidim or an auto parts store that I may be able to order one online or get someone to send me one? After some research and realising the difficulty in locating a repalcement here, I thought I had better have one sitting on the shelf, so I don't have the boat sitting idle for weeks until I can locate and replace the pump. I would also like to note that I have almost 600hrs on my boat and I have run out of fuel twice, so I may never have a problem but I think it is a relatively cheap insurance policy to have a pump just in case.

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                          • Originally posted by AussieMC View Post
                            G'day.
                            Looking for assistance with regard to the "possible" failure of my fuel pump. It seems that all the replacement pump model numbers (e.g. EP356), that are listed within this thread don't cross reference here down under. Is there any where like Skidim or an auto parts store that I may be able to order one online or get someone to send me one? After some research and realising the difficulty in locating a repalcement here, I thought I had better have one sitting on the shelf, so I don't have the boat sitting idle for weeks until I can locate and replace the pump. I would also like to note that I have almost 600hrs on my boat and I have run out of fuel twice, so I may never have a problem but I think it is a relatively cheap insurance policy to have a pump just in case.
                            If you can order from Amazon.com in the US, they have both the EP356 and the E2044.
                            '04 MariStar 230VRS/MCX

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                            • Thanks big mac, I had already looked to purchase from Amazon, but they only ship either pump to the US.

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                              • Hi Shane, google is your friend. I too have been looking for a spare pump, and I found this place that will ship to the land of Aus. I haven't ordered one, yet but intend to soon. Shipping is only about US$26

                                http://www.oehq.com/index.cfm?showpa...356&vendor=ACD

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