S130Z

i did not care too much for English in high school. there might have been another factor to my bad grammer at that time.

i changed the oil and id did not smoke. i ran rough at idle and misses up to about 3 grand. to me it sounds like a sticky valve. i put some magic mystery oil in it trying to fix it. i have ran it for about an hour with the mystery oil and it did not help at all. it still has great power. i dont know what else to do.

you can put my name down for one

i had a similar problem when i changed my intake on my zx, i was getting to much fuel, bog down and it would backfire through the intake. check your fuel pressure regulator. if you have a bad vac leak it will also bog, check your grounds too.

you can check the fuel pump an easyer way than that, turn the key to the on position and you can hear it running, listin to the gas tank and see if you can hear it. when did the problem occur? did you do any modifications?

i got time to mess with my car again and i cheked everything over, clean plugs, crainked it with the plugs out, eliminated my idle bypass screw and relocated that odd ground wire. i cranked it up, and it ran smooth as butter. i drove it down the road and it was still burning oil so i started to change the oil, drained it(the oil was 1/2 gas 1/2 oil) and it started to rain to im stopped for the moment.

that rear bumper is nasty, i will join in the group buy.

so i got around to messing with my car and i giggled around one of the grounds i thought might be bad and when i moved it i heard a clicking sound like it was coming from my injecotrs, i tried to start it after tightening the ground and then it wouldnt start. it was kinda dark so i coulndt check my fuses and i had no flash light at the time.

so i got new injectors, i used 300zx injectors witch are 20cc larger, and replaced the fuel filter to be safe and to my surprise it ran quite smooth and did not smoke. i let it idle for a few till it warmed up and then gave it some gas. it revved up and then backfired. confused i reved it up again and it backfired two more times and then started to run rough again and smoke. after messing with the TPS and wondering why it did this i reved it again and then it backfired through the intake. it began to run like before the new injectors and still ran with all the injectors unplugged. baffled i shut it off and left it alone. i also noticed that my ground wire that is connected to the idle hose bracket( this ground is smaller than all the other grounds) is barely hanging on.

that would be smart, have a touch screen that is seperate than the brain.

good point, thought it was good idea, but you could have some issues with that

i had this random idea to have a boost controller and turbotimer built in to an aftermarket stereo deck. i figured it would save space and probubly money. i planned on emailing alpine or Greddy to see what they think but i figured i would get some other opinions on this too.

i will post up when i install the new injectors and we can go from there. by the way thanks for the link to the efi bible.

well the thing about this is that i unplugged all the injectors at once, oddly enough, the car still ran, exactly the same. i checked the plugs with a test light and there is signal comming from all of them. i guess my injectors are stuck wide oppen and i actually had raw fuel comming out from my exhaust. looks like i might have found my problem.

so i unplugged the number one injector, the idle slowed down to about 350 rpm, then i unplugged the number 5 injrctor and the idle went back to normal. i listended to the injectors with a screw driver to check for the click and they all clicked, and then i listened to the manifold and it had the same noise coming hrough the screw driver so i dont know if i herd the sound of the injector or just the engine running.

is this motor stock? done any work to it?

i realized my battery was low when i ran my compression test so that would have an effect on my compression reading. is there any way to check for fuel delivery to an individual cylinder?

how much for the n42

i pulled the connectors off the fuel injectors one by on and the only cylinders that seemed to be effected by this was numbers 1 and 4

i have not searched the efi bible, is it online or a book?

i have enough experience to rebuild a carborated motor. i am enrolled at NTI but dont start till october. i took a semester class in basic automotive repair.

there are about 5 stock 280zx at my local junkyard if anyone needs parts.

very true. i also want to do a summer project and build a high compression motor, do you think one out of a junk yard is feasable? there are about 5 280zx's in my local junkyard and i was thinking about pulling one.

i do have oil in the car. i checked it before i checked the compression. the oil smelled really bad, not like regular oil smell, i almost threw up. i am about 100 miles past my oil change mileage though.

why do you believe that?