Pac_Man Posted December 5, 2013 Share Posted December 5, 2013 Hi everyone, Just had my car quit on me. I looked underneath when it died and there was a wet spot under the fuel pump and I could smell the gas. It was giving me intermittent problems before but it seems it's finally bit the bullet. I've been doing a lot of searching to find a replacement pump but I'm having a hard time finding something saying "___ is a swap-in replacement." O'reilly and Autozone sell a couple models but one of the O'reilly pumps listed is a tank-mounted pump so naturally I'm a bit wary of trusting their system. I've also heard of people using the Walboro 255, but after looking at their website and checking around a bit, it seems that it might be too high of a pressure? I don't have a pressure gauge so I'm also wary of buying this, not to mention I've heard it takes some fab work to get it in. Any help is appreciated as always. - Pac Man Quote Link to comment Share on other sites More sharing options...
WRC17 Posted December 5, 2013 Share Posted December 5, 2013 I've heard of a lot of people using the MSD-2225. I actually just bought one for my 280Z, but I haven't put it on the car yet so I can't tell you how well it works. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted December 5, 2013 Share Posted December 5, 2013 You can use the Walbro or just about any Bosch high pressure pump. You don't have to worry about the pressure, the fuel rail pressure regulator will take care of that. Quote Link to comment Share on other sites More sharing options...
Pac_Man Posted December 5, 2013 Author Share Posted December 5, 2013 I see, I thought that was the case but I always figure better safe than sorry. Do either of those (MSD 2225 or Walbro 255) bolt in the same as the stock fuel pump, or will I have to do some fab work? My first job was working with sheet metal so I'm not afraid of drilling a few holes, but I definitely don't have the skill or equipment to weld myself a bracket. Quote Link to comment Share on other sites More sharing options...
WRC17 Posted December 5, 2013 Share Posted December 5, 2013 The MSD pump came with brackets (they are even lined in rubber to keep it quiet). All you need to do is drill holes in the plate to attach them to. Quote Link to comment Share on other sites More sharing options...
deuce8ernerozero Posted December 6, 2013 Share Posted December 6, 2013 My fuel pump went out in my FI s30. Im getting a nos ac-delco pump off eBay for $40 it looks just like whats already in the car. I went on o'reillys first. I didn't have any problems finding a page full of overpriced high pressure pumps that would be plug and play. Quote Link to comment Share on other sites More sharing options...
zster Posted December 6, 2013 Share Posted December 6, 2013 Just make sure your fuel tank is clean. Dirty, rusty tanks can ruin a pump quickly. Quote Link to comment Share on other sites More sharing options...
WRC17 Posted December 6, 2013 Share Posted December 6, 2013 Just make sure your fuel tank is clean. Dirty, rusty tanks can ruin a pump quickly. ^Definitely this! When I first bought my Z the fuel tank was screaming all the time. I knew the car had been sitting for over a decade so I took the tank out and it sounded like a maraca. When I bought the car the previous owner said the fuel pump was recently replaced, but it took no time at all for it to clog up again. Quote Link to comment Share on other sites More sharing options...
9rider Posted December 6, 2013 Share Posted December 6, 2013 MSD 2225 is easy to put in. Drill new holes for the pump and that's it. Remember to mount it horizontal and as low as possible comparing to tank position. It is a good pump, but making extreme whining noise. Trust me, it is louder than my 3 inches catback on idle, especially when it staving. Quote Link to comment Share on other sites More sharing options...
Pac_Man Posted December 6, 2013 Author Share Posted December 6, 2013 Yeah I'm actually thinking the fuel tank is the suspect in what made my car stop running. I tried starting it last night while my dad and I were pushing it back and I heard it catch once so I kept trying. Eventually I got it to cough to life but it was running terribly like before it died. I limped it down the road and eventually it started running normally. I've been having an issue with it over the last few months where it will randomly lose power temporarily. Seems like it's gunk in the fuel tank getting clogged but I think it's probably in the pre-pump screen or something. I checked the fuel filter not long ago and the gas inside of it was clean (the gas inside the old one was noticeably dirty when I took it out). Quote Link to comment Share on other sites More sharing options...
MikerZ Posted December 6, 2013 Share Posted December 6, 2013 Wouldn't a hp fuel pump like the walbro 255 overrun the stock fpr? I'm actually going to install a wb 255, but will also be running an afpr and adjust to stock pressure. Quote Link to comment Share on other sites More sharing options...
NewZed Posted December 6, 2013 Share Posted December 6, 2013 (edited) Pump failing to pump and pump leaking might be two different problems, as well as engine as running crappily. The Airtex E8312 is the common parts store replacement pump. It's not very noisy and seems to work fine, generally, although some people have problems, I've had one for about three years. Lots of people seem to complain about noise from the MSD225 (or Walbro, same thing I believe). How it's mounted is important. Another option is a used Bosch brand pump from a wrecking yard Ford pickup (with EFI - might take some fittings work). Sometimes used factory pieces are better than new aftermarket. Edited December 6, 2013 by NewZed Quote Link to comment Share on other sites More sharing options...
Pac_Man Posted December 6, 2013 Author Share Posted December 6, 2013 Well I'm pretty sure the engine running as bad as it was, was due to the fact that it wasn't getting fuel. The leak I suspect is a result of the blockage. Quote Link to comment Share on other sites More sharing options...
NewZed Posted December 7, 2013 Share Posted December 7, 2013 Sounds reasonable. Might be worth removing the check valve to see if you can fix it. That's about where the blockage would be if it's in the pump. Even so the pump bodies are designed to handle pressure. Maybe your leak was on the inlet side and you were sucking air. You could measure fuel pressure, to be sure it's the pump. Quote Link to comment Share on other sites More sharing options...
Nightmare_Fairlady Posted December 9, 2013 Share Posted December 9, 2013 my pump went out about a week ago on my 76 280z, (day after I got the car, go figure) and after some work I found out the wires to the pump are bad. also found that out after I had bought a new pump. I hooked everything up through a switch that ive hidden for security reasons. I can hear the pump when the switch is flipped. now the car acts like it wants to start, gets so close, but then dies. is it possible I didn't get a pump with enough pressure? the pump is a carter P70304 pump. it says it pumps 30 gallons per hour, but I have no idea on the actual psi. ive read that z cars need at least 36psi but I don't know if the carter is sufficient. any help?? Quote Link to comment Share on other sites More sharing options...
NewZed Posted December 9, 2013 Share Posted December 9, 2013 The internet says that that pump should work. It's DC and directional though and the motor will run backward if the wires are. Could be that your old pump was okay and the original problem is still there. Measure fuel pressure. Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted December 9, 2013 Share Posted December 9, 2013 my pump went out about a week ago on my 76 280z, (day after I got the car, go figure) and after some work I found out the wires to the pump are bad. also found that out after I had bought a new pump. I hooked everything up through a switch that ive hidden for security reasons. I can hear the pump when the switch is flipped. now the car acts like it wants to start, gets so close, but then dies. is it possible I didn't get a pump with enough pressure? the pump is a carter P70304 pump. it says it pumps 30 gallons per hour, but I have no idea on the actual psi. ive read that z cars need at least 36psi but I don't know if the carter is sufficient. any help?? That pump is for carburetors. It will not deliver the flow at the pressure you need. With the 280Z fuel rail and regulator, you will just be dead-heading that and it won't flow. Quote Link to comment Share on other sites More sharing options...
NewZed Posted December 9, 2013 Share Posted December 9, 2013 (edited) Search the part numbers on the web. All signs are it's a standard EFI replacement pump. http://www.jegs.com/i/Carter/180/P70304/10002/-1 Edit - I should say though, that Carter Fuel Systems does a crappy job of supplying information about their products. Probably a sign of very wide specifications. Cant' be held responsible if they don't write it down. Looks like they're part of Federal Mogul. http://carterfuelsystems.com/fuelpumps/universal_fp.php http://fme-cat.com/overlays/part-detail.aspx?pNum=P70304&partType=Fuel%20Pump%20-%20Electric%20In%20Line&brandId=CF#.UqYloicW5ko Edited December 9, 2013 by NewZed Quote Link to comment Share on other sites More sharing options...
SleeperZ Posted December 10, 2013 Share Posted December 10, 2013 Search the part numbers on the web. All signs are it's a standard EFI replacement pump. http://www.jegs.com/i/Carter/180/P70304/10002/-1 Edit - I should say though, that Carter Fuel Systems does a crappy job of supplying information about their products. Probably a sign of very wide specifications. Cant' be held responsible if they don't write it down. Looks like they're part of Federal Mogul. http://carterfuelsystems.com/fuelpumps/universal_fp.php http://fme-cat.com/overlays/part-detail.aspx?pNum=P70304&partType=Fuel%20Pump%20-%20Electric%20In%20Line&brandId=CF#.UqYloicW5ko It does say it is compatible, I missed that. I did see this on Summit Racing though, and that's why I thought it was for a carbureted engine "With a high free-flow rate and consistent fuel pressure, these Carter in-line electric fuel pumps will keep up with any carburetor. Racers will appreciate their low 4.5 amp draw, too." Perhaps the intake of the pump is clogged with old debris. Quote Link to comment Share on other sites More sharing options...
Pac_Man Posted December 11, 2013 Author Share Posted December 11, 2013 Perhaps the intake of the pump is clogged with old debris. That's what I suspect is the problem with my car. I took it on a very short test drive Sunday and it was really low on power and stuttered a couple times (held my breath every time it did). Tomorrow I'm going to clamp off the line from the tank to the pump and disconnect it so I can inspect the screen filter thing. Quote Link to comment Share on other sites More sharing options...
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