2017 Z1 intermittent no start / fuel pump?

[Dman223]

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Does anyone have a cross reference for the fuel pump? I theyre sold out and my marina doesnt have one. "Pump, Fuel, In Tank, 3646-01"

[Zackdogg]

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Does anyone have a cross reference for the fuel pump? I theyre sold out and my marina doesnt have one. "Pump, Fuel, In Tank, 3646-01"

Lemme see if I can find the one I ordered. Tige literally changed the factory part number with a sharpie, on mine at least, by one digit. I think it was more than double the price to buy from a local boat shop.


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[Zackdogg]

Here’s a pic of the fuel pump I pulled out.
you may be able to find that part number, that sharpie “8” was over the top of another number. When I get to my laptop, I’ll see if I can find the order confirmation, which might have more info. I got it from something like Great Lakes Skipper, or something close to that.


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[Dman223]

Here’s a pic of the fuel pump I pulled out.
you may be able to find that part number, that sharpie “8” was over the top of another number. When I get to my laptop, I’ll see if I can find the order confirmation, which might have more info. I got it from something like Great Lakes Skipper, or something close to that.


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interesting, 3658-01 is in stock at inboards online. Idk if they’re anywhere else cheaper.

[Dman223]

Crazy mine is new.. it’s in a 2017 and the pump is dated 2023. This is a massive problem if these are going out at this rate

[Zackdogg]

Crazy mine is new.. it’s in a 2017 and the pump is dated 2023. This is a massive problem if these are going out at this rate

That’s wild, I replaced my whole fuel system because I had been chasing a gremlin for like 4-5 years, that would just show up once in awhile. I don’t know that have caught him, either. I had a dealer work on my fuel pressure issues when it was under warranty (really just a code that was throwing it into limp, I think the actual pressure was fine), but I ultimately don’t know that the issue is even resolved. I just changed the components that were before the rail, assuming something would fix it, it could be a bad ground or something that I’m not even seeing, as mine is so infrequent, I never know if I actually fixed it.


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[Dman223]

if i do get a new fuel pump, whats the replacement process like? Do i have to relieve pressure before disconnecting the line? and how to you even connect the new line?

[Zackdogg]

if i do get a new fuel pump, whats the replacement process like? Do i have to relieve pressure before disconnecting the line? and how to you even connect the new line?

My biggest headache was it broke full of fuel, so the tank was 500-ish pounds to drag out, in a weird position, so that was a back breaker. I’d definitely siphon or pump the fuel out of the tank, before I did it that way again. I pulled the whole center section of my floor out of the boat, so it was out of my way. Other than that it’s kind of a take it apart, and put it back the same way sort of process. You do need a special tool (like $10 from any auto parts store) for those high pressure fuel fittings not sure what they’re called) don’t try and use pliers or something you’ll mess them up. I didn’t do anything to relieve pressure. I’m going to put a pressure gauge inline somewhere to check that pressure if this ever happens again. If you checked that pressure, before you messed with that pump, you’d at least know that much. Also keep in mind I have an RZX, so it might be a little different, but guessing it isn’t all that much different.


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[Dman223]

My biggest headache was it broke full of fuel, so the tank was 500-ish pounds to drag out, in a weird position, so that was a back breaker. I’d definitely siphon or pump the fuel out of the tank, before I did it that way again. I pulled the whole center section of my floor out of the boat, so it was out of my way. Other than that it’s kind of a take it apart, and put it back the same way sort of process. You do need a special tool (like $10 from any auto parts store) for those high pressure fuel fittings not sure what they’re called) don’t try and use pliers or something you’ll mess them up. I didn’t do anything to relieve pressure. I’m going to put a pressure gauge inline somewhere to check that pressure if this ever happens again. If you checked that pressure, before you messed with that pump, you’d at least know that much. Also keep in mind I have an RZX, so it might be a little different, but guessing it isn’t all that much different.


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thank you. i dont need to remove my tank the pump comes right out the top. Sounds pretty straight forward then. I have to check how my hose connects to the regulator i didnt see the crimp fitting.

[Zackdogg]

thank you. i dont need to remove my tank the pump comes right out the top. Sounds pretty straight forward then. I have to check how my hose connects to the regulator i didnt see the crimp fitting.

That’s good news, pulling the tank back was the biggest hassle, I do remember that part. You can see what those fitting look like on mine, and those are the tools to release those pressure fitting. Good luck with it, happy to help where I can!!



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[Zackdogg]

thank you. i dont need to remove my tank the pump comes right out the top. Sounds pretty straight forward then. I have to check how my hose connects to the regulator i didnt see the crimp fitting.

That’s good news, pulling the tank back was the biggest hassle, I do remember that part. You can see what those fitting look like on mine, and those are the tools to release those pressure fitting. Good luck with it, happy to help where I can!!



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[Dman223]

update, i got a malibu fuel pump off ebay, its a 2021, mines a 2023.. so already not feeling great. Then, it doesnt fit in my fuel tank, too tall. So i tore both apart to make the inards of the 'new' one fit inside the old one, buttoned it up and it started fine. now to test it out on the water, ill update this again eventually

[Dman223]

update- after frankensteining the malibu pump from ebay and my old pump i have not ran into a no start since. but now i have a code spn 442 fmi 15. impeller is on order.. this is my 4th boat and ive never had so many issues with my other 3.

[Dman223]

I drove three hours today for a new exhaust sensor and the code is still following the new sensor whether I install it on port or starboard side

[Dman223]

with new fuel pump, i am still getting all my same symptoms no start, stalling, low fuel pressure. I even had the boat complete shut off while at idle speed with no codes one time.