Ok, i have already confirmed that my in-tank fuel pump assembly is different to the 300ZX. But i was reading about a Bosch 040 being a possible replacement for the 300ZX fuel pump and it got me thinking. I am hoping there are some mechanics on here that have worked with fuel pumps and can tell me about getting a replacement. Does the internal pump have to be identical for me to fit it? I.e. could I run down to the wreckers and grab me a pump from another car (or even possibly a 300ZX one??) and modify it to make it fit? The pump on my car is not regulated; i.e. it runs full power, all the time (confirmed in the service manuals) Any ideas? P.S. This is for my Cedric, not a Z, hence i figured this is the best place to post this question
Just find something similar Dom As you can see, anything about the same size will do, all it has is a hose coming out of it and some wiring so you can put almost anything in there, just make sure it can flow as much as the Cedric's (which shouldn't be too hardcore). That it doesn't switch voltages (which is unusual for a Nissan) makes things easier. About the only thing you have to worry about is that the pickup is in about the right place (so it doesn't run out of fuel with a quarter of a tank left ) and you should be fine. Ben
Is changing a fuel pump a DIY job? I can do the odd job here and there but the tank is 3/4 full and I would really hate for it to all go up in flames or something!
Ok, found a couple on ebay The V6 Magna should be a close match, being 3.5L and around the same power (167kw): http://cgi.ebay.com.au/Mitsubishi-M...QcategoryZ10400QQtcZphotoQQrdZ1QQcmdZViewItem At that price its worth trying i think... So long as it would be something I can do in my garage... Otherwise i could go for a new one: http://cgi.ebay.com.au/WALBRO-FUEL-...yZ102361QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
The only reason i would shy away from a TT fuel pump is that they are designed to run regulated, whereas my setup would run it full speed at all times. Oh, and from what i see the going price for a new TT pump is around $350, vs. $165 for the Walbro (which I am leaning towards) Oh, and i have no performance modifications planned for this car, so I am more inclined to select the lowest pressure pump so i have better fuel economy!! Haha
if the car is tuned properly you will have the same economy regardless of fuel pressure and flow capabilities of the fuel pump
Call Unique Autosports (UAS) i got my fuel pump replaced with a/market. If I remember correctly, the cost of the pump alone is about $200 rated at 600hp. The reason why I know this is b/c the petrol pump on my car was in bad shape and had to replace. UAS did it. Peter
Well, i decided i am going to do it on my own. First up I got a quote from Nissan for the fuel pump from them... $480! Then on Tuesday i decided to see for myself how much work would be in it. I was able to take the old pump out, inspect and take measurements and put it back in, in under 2hrs. At first she didnt want to start anymore (bit of a problem cos the car was halfway in my garage and i couldnt push it in or out!). But after bridging the fuel pump relay i could 'pre start' the fuel pump (read: kick and punch the tank until it started) before turning the key So then I got a Walbro pump last night from an Ebay seller who was in Sydney (so i could pick it up, and inspect it before purchasing), and it was only $140. I think the main reasons i chose a Walbro is because a) i could get it on the spot, no waiting for mail and b) it is brand new as opposed to unknown secondhand. I will be doing the install tonight so hopefully my car is running by the weekend! I'm starting to worry that the Walbro is going to supply too much pressure for the FPR, but i'll cross that bridge when i get to it...
Piece of piss! Haha, The Walbro pump was a meant for a 200SX according to the seller, but he thought it was generic Nissan style, and i am inclined to believe that - it fit perfectly in the bottom mount, and using about 4cm of the supplied rubber hose it was sitting snug as a bug in a rug! It is as secure as the OEM pump with no cable ties, hose clamps or foam padding needed. The car idles fine now and revs out like it should. Looks like it isnt too much pressure for the stock FPR. Sound wise it is only barely audible in the cabin. If i sit there with the stereo and aircon off i can hear a faint whine from the rear, but as soon as i put aircon on it cant be heard. I'm guessing it would fit the same in the 300ZX mounts, so for anyone who doesnt want to fork out $350 for a new Nissan pump (or $480 as in my case), the $140 Walbro seems to be a viable alternative. And to answer my original question, yes it is a DIY job!
