T61 260Z Posted January 21, 2007 Share Posted January 21, 2007 When I crank engine fuel pump does not turn on,changed fuel injection relay,and fuel pump,any ideas? Quote Link to comment Share on other sites More sharing options...
ZDrifter Posted January 21, 2007 Share Posted January 21, 2007 Get a test light out and start from your fuse box and work your way back to the fuel pump to check for power. Check for power at fuse box and if you have power then go to the power cable for the fuel pump and check. If you dont have power then its somewhere in the line after the fuse box, if you do its your pump. if you dont have power at all check your fuse in the fuse box and then check for power behind the fuse box. If you have power behind then your fuse is bad. If you dont then trace that wire to where ever it goes. Its a cat and mouse game, sooner or later you'll win... Good luck Also make sure you dont have the wires mixed up on the fuel pump and check your grounds. I believe the 260's have a connection for fuel injection power behind the passenger under the carpet check there too. Quote Link to comment Share on other sites More sharing options...
T61 260Z Posted January 21, 2007 Author Share Posted January 21, 2007 Will do thanks. Quote Link to comment Share on other sites More sharing options...
T61 260Z Posted January 21, 2007 Author Share Posted January 21, 2007 There's no fuse in the fuse box .What do I do now the only way it runs if I give it direct power to pump and it's flooding car and have to keep changin plugs almost every week! Quote Link to comment Share on other sites More sharing options...
ZDrifter Posted January 21, 2007 Share Posted January 21, 2007 Theres no fuse for the fuel pump or no fuse their period?? if there is no fuse in the slot then stick one in and you should be good. I will check my box to see where my fuse is Quote Link to comment Share on other sites More sharing options...
cpt jack Posted January 21, 2007 Share Posted January 21, 2007 There's no fuse in the fuse box .What do I do now the only way it runs if I give it direct power to pump and it's flooding car and have to keep changin plugs almost every week! so its runnin rich, theres a guy out here in vegas and his z runs beyond rich the plugs gotta be changed like every time the car is started... but yea he thought it was his AFM but it wasnt and we still dont knw what it is.... possably a ecu issue? Quote Link to comment Share on other sites More sharing options...
T61 260Z Posted January 21, 2007 Author Share Posted January 21, 2007 no fuse or slot in box period, i know the pump is conected in conjunction with the pump relay which is one unit with unit!and and thats exactly how mine acts jack but with the pump running direct the stock wires are dissconneted and ran it direct to the ignition! Quote Link to comment Share on other sites More sharing options...
T61 260Z Posted January 21, 2007 Author Share Posted January 21, 2007 I had recently put pallnet fuel rail with 390 mitsubishi injectors the car started with them but flooded,my fuel pressure was set a 42psi, replaced with stock rail and now running rich and flooding issues,if car doesnt start on 1st try,plus my other problems! Quote Link to comment Share on other sites More sharing options...
T61 260Z Posted January 21, 2007 Author Share Posted January 21, 2007 Have 240sx throttle body ready to install but kinda scared to because of all the issues! Quote Link to comment Share on other sites More sharing options...
T61 260Z Posted January 21, 2007 Author Share Posted January 21, 2007 Anyone Know What This Can Be? Quote Link to comment Share on other sites More sharing options...
pallnet Posted January 29, 2007 Share Posted January 29, 2007 What EFI are you running because if you're still running the stock EFI then you will have this problem and there's only one real fix, aftermarket EFI. The stock turbo supports 300cc injectors real well. I'm not sure what rail you bought (14mm or 11mm) but here's a few injector sources for 300cc ish injectors, turbo Volvo (14mm) and yellow top NA Supra (11mm). Both of them will run well with stock L28ET EFI and minor tweeking of the AFM in some cases. Quote Link to comment Share on other sites More sharing options...
T61 260Z Posted January 30, 2007 Author Share Posted January 30, 2007 we have the stock efi and we got the 11mm with 390 injectors.currently we are running stock injectors and efi with a t4 t61 turbo. Quote Link to comment Share on other sites More sharing options...
pallnet Posted February 1, 2007 Share Posted February 1, 2007 It appears you have too big of injectors for the stock EFI system. I suggest going to a lower flowing injector or upgrading to stanalone EFI. Quote Link to comment Share on other sites More sharing options...
steveosupremeo Posted August 18, 2007 Share Posted August 18, 2007 i just bought a set of the yellow top NA injectors and was wondering if they will only work with the L28T electronics or if they will work with the Z31 turbo electronics (84-85) without having to be reflashed? and they are low impedence like stock right? Quote Link to comment Share on other sites More sharing options...
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