metrickillers

"late update" it was the fuel tank, i was full of old hardened fuel that would almost instantly clog ,lines,pump, filters, thank you guys for the help!

"late update" it was the fuel tank, i was full of old hardened fuel that would almost instantly clog ,lines,pump, filters, thank you guys for the help!

sorry Laecaon , i didn't mention, the brake lights do come on with the peddle and turn singles work with switch . i will check the switch and fuse box. one question i just passed the end of my registration so i need to go get a safety test to re-register, do you think that flashlights for taillights would pass. thats how i have been getting around for the last 9 months . from what i herd , as long as the lights " flashlights" shine red i would pass.

hey guys. i have had this problem for a while now, the problem is that; one random day after washing my z "77 280z" all the lights "besides the headlights" just turned off. every single light on the car works but they do not come on when they should. the reason i know they work is because they all come on when i turn my hazards on. I am in no way good with electrics but i did the usual routine, replaced all fuses, tested electrical links and bulbs, grounds. i cant find out what would cause this. any help would be nice, thank you. as a note. one of my friends told me that a bulb could have gone bad, even through it shines it could be causing some other problem. i know very little on electrics.

thanks for the reply's. ive been getting some crap quotes on cleaning but im going take a steam cleaner to it , soak in boiling water, and use detergent or some kind of cleaner. Monday, im fairly certain that it will work , because a regular pressure washer got most of it out. but if it doesn't i will take it to get professorially done. again thanks for the quick responses, Ratsun never lets me down :)

ok :/ i will go call around. one more question , once it has been totally cleaned will there need to be some coating installed, internal and external?

i don't think it was a coating. it was a thick, dark but transparent brown, the only thing i can relate it to is a dark amber substance. and i dont think taking it somewhere is an option at the moment, it might be too pricey.

hey guys, so the other day i pulled the gas tank to try and fix a fuel delivery problem http://community.ratsun.net/topic/52650-presumably-fuel-delivery-problem/ . once i pulled it i noticed that the inside was just completed filth, the walls and a little bit of the bottom was coated in hardened fuel. we pressure washed it, scraped it, and got a good amount of it out but i don't want to putt it back on if that little bit that we didn't get might re-glog my lines. my question is what kind of chemical or procedure can i use that will eradicate all of this from my tank. i was thinking that i could use my steam cleaner or something alone the lines of boiling water to remove the hardened fuel . thank you and any help would be greatly appreciated.

"Update" the car is at the shop at my school so im working on dropping the tank. i are almost positive that there is debris in the tank. so when im done with that i will let you know how it runs and if i fixed the problem. and sorry to hear about your z @slowmomiata i hope you find out whats wrong with it.

"update" i changed the filter and the z seems like it wants to actually run good now. the pump, as far as i could tell isnt pulsing and or struggling to get fuel. i will let you know how it is after i drive it around for a while.

oh and i have become somewhat familiar with the fsm over the last year 1/12 haha but thank you.

thanks @dtp, have done many of these test. and they all seem to come out normal :. -clogged muffler/cat . i have a hollow cat and the muffler is fine, -AFM i just took off yesterday and everything looks normal"clean no corrosion" the flap isn't stuck it works just fine, - Ignition , brand new plugs, coil, and as far as i could tell distributor is fine. timing is off but not bad, "cant fix at the moment" dont think timing is the problem in this case. - EFI/Injection is fine working normal. i could apply seafoam but they open and let fuel fairly well when its not acting up. -the tps is probably the only thing i haven't really looked at much, the connector look ehhh ok "could be cleaned" but i dont thing that is the issue in this case. - blocked line/pump; could very well be the issue, i live in utah so lots of salt could have made the tank corrode in turn blocking fuel or getting caught in the pump. im going to go replace the filter right now and i will let you guys know if there was a difference -relay, the pump does sound like its getting drops in voltage so im wondering if the relay is going out, but it only happans if the car has been running for a a little bit, if it was a relay i would think that no matter when it starts it would just happen instantaneously other info: today i checked the old stock pump and ran it off of a 12v for a while. the pump "even after having been left out in snow for a year" worked just dandy. it did not pulse/shut off like it did when it was connected to the car. so i think that i could probably rule out pumps. One question; after i replaced the pump with the new one the car ran great for a while then the same symptoms started again i dont understand what would cause a car to do this if its not the pump.

@datsunaholic. that is terrible,i love this car more than life i would hate to give up this amazing machine , but the ecu as far i i know is just fine the efi system looks like it is working properly. @interrobang no u haven't changed the filter but i am going to do so today. i was also thinking that maybe something in my tank is blocking the fuel outlet " to pump" like a floater or some piece of some of the tank itself. im going to attempt to wire the pump from the battery and control it with a switch " temporary" to see if it solves my problem

@datzenmike, to be honest im not sure, but i don't think so. @beau_ it might sound stupid but , no i have not checked the filter. i was thinking about it being the filter but i think that is not the problem. you can here the pump pulse, like its loosing voltage or having a random hard time to pump " kinda sounds like its seizing" . could a severely clogged filter cause pressure in the lines to were it could effect the pumps functionality?

hey guys, so i have had this problem since the day i bought my 77 280z, and nobody has been able to help me fix it.the problem: when it first started it would sputter and backfire at about 3000 rpm and get worse as i drove it. as time went on the problem got increasingly worse and became kinda undrivable. I found started investigating and found that the fuel pump would pulse and shut off then return "repeat". this would obviously cause the engine to starve for fuel and sputter or stop firing all together. well i bought a brand new "presumably a real walbro 255 fuel pump" and replaced the stock fuel pump with the walbro. the z ran amazing for about a month and a half. then started sputtering, backfiring,dying, just like before. at a glance it seems the fuel pump went out again but i find it hard to believe that it would just burn up and die in a month, although i have ran under a half tank about the entire time its been installed, but i didn't think it mattered much on a external pump. it has to be something electrical,fuel pump, afm, tps,realy, something along those lines. As of now the 280z is litraly un-derivable. it will start and run great for about 3 seconds then starts acting up, i can drive it for about 50 feet then it gets so bad to the point were the pump is barely functioning and cant touch the throttle without it dying, it eventually just dies. im at a loss here guys, this is my baby and would love to drive her on the road once more. help or opinions would be greatly appreciated additional -info: when i turn the key too acc the pump comes on and stays on. "i don't think this is normal" - the afm that is on the car right now might be from a zx, the owner gave me a box of parts and there was a was looks to be a zx n/a afm, i know that some people do the zx afm conversion. i also know that the early 77 280z had a fuel pump cut off switch in the afm's and the later ones did not and it was run from the oil pressure sensor. from what i can see the OPS operates just find and when it is unplugged it does not in anyway effect the pump or running status of the z. - the only thing on the car that i know does not work properly is the temp sensor. but i know that thats the reason its making the car run lean,if that was the issue that doesn't enplane why it ran great with a brand new pump.