well ever science i got my z it has had these unusal long start times.
on a tru cold start it ususaly fires on the 2-5th revoloution.
if you drive the **** outa it and park it for a good 30 minuts and try it revs and revs and revs, then changes to like a half tone, not a pingy tone but a less 'deep" tone and will usualy either fire up or do this gay low rpm runing, i mean like 2-4 hundred rpms, and while its chuging low bowed if u floor it it will either kill it or drop em lower until you let go of the pedal. once it achives idle its pristene and ready to kick ***.

also when its doing one of these gay starts flooring, quater throttle, or no throttle nothing makes a difference at all.

i wnana admit two things though. keep in mind it has had these exact same symptoms science i first got it day 1

#1 a week ago a old frind of mine told me about the gravity sensor inside the maf and how backing it off can make the k door open faster creating a sharper throttle responce. so we went to open it up and found G.M. silicone glue on the maf's cover plate. persistant we opened it up and this guy told me sum 1 has already played with my k jettronic gravity whele thingy, and the white mark on the whele wasent where hes usta seeing them, it looked to him like some one had stiffined up the spring making the door open slower. being he worked for nissan. hessistant we stil backed it off a good 4 clicks weaking the spring and the throttle has got more responsive, im debating doing more, spring unwinding.
#2 in description of my pos starting symptoms he suggested trying to open up the scrue for the iac a little more i did almost a full half turn, but it made no sence being it idles fine.
the symptom has gotten absoutly no better.

o ya and #3 im runing timing at 12 degrees btdc advanced
but again everything ive done to it has not changed this crap.

so guys what do you think. is it the startup injector? ?????
as for the pm schedule i have only really ran butloads of lucas injector cleaner through it, a pcv few oil changed im working on geting a new evap canister filter but i cant find 1 the part is almost obselete and uh sum1 said to replace the maf/tps it self. hahaha o boy

 

I'm going to take a stab in the dark here and suggest that it is your MAF. Try messing around with some of the settings in it like you did before.

 

Even if it's not the AFM, someone's been in there screwing it up before you got the car. I'd go for a cleaning/rebuilding (if it's salvageable, a new one is $$). J has a post on here somewhere with some nice rebuild instructions, and Blue has a nice tech tip page for adjusting and calibrating the AFM:
http://atlanticz.ca/zclub/techtips/EFI&fuel.htm
I'd do a once-over cleaning of all the EFI connections, too (if you haven't already).
Dave

 

sorry for the long reply but yes i was lookign around here and found sum usefull stuff, im goan read up those links asap.
but googling what the maf looks like virgin is nothing like what it looks like now, i think sum 1 stiffned it up big time. im gona drop it back more see what hapens, maybe go see bout a junkyard 1, with the oem glue still on!!!!!!
i disconnected the startup injector today and tried starting it to try and elimante 1 thing and it started the same. should i poke into more ignition componets while im at it?

 

when was the last time the z had a tune up?new wires,plugs,cap,rotor,coil etc. not saying this is directly your problem. these motors are warm temp motors. still seems alot of turns.

 

i gave it a good one when i got it everything cept the cap and rotor so far.

i will play with the maf some more next weekend hopefully.
i should just go find another 1.

 

is there any kind of maf emilination, or per say a newer design or conversion to more of a modern day maf?

 

ummm yeah, a real MAF and not your crappy flapper AFM... well, could always go MAP but thats honda and a stand alone thing.

 

where can i find this maf, beacon of technological advancement that i can hook up....

 

cant without modification, need to do teh whole Z31 ecu swap to use the Z31 maf of go standalone for a map. best bet is to just get a good working AFM

 

well it seems every angle i look at the bes option is just to go buy a turbo motor and ecu and drop it in. and work from there.
any 1 in new mexico looking at selling theres.
possibly a zx all toghther?

what were the hp rating for the turbo motors anyway?

 

not enough why you turn the boost up ....a freshly rebuilt around 175 give or take. a used turbo motor will prob have some abuse on it so its best to take it apart and check things out. replace gaskets and what not. while your cleaning it up why not add goodies. also take in mind a stock t3 can go about 300 hp.

 

175hp.... under the hood of my n/a 2.8 it says max hp 180 @ 5400 i think.
how can the turbo model fresh cook 175 .......
wtf now im confused.

 

it says max hp 180 @ 5400 i think.....thats gross hp. did u read that off your sticker?

 

right off a little plate thats riveted mounted to the inside of the driver side fender. and i went to go check on it its exactly as i said it man.......??? soo help me grasp the bigger picture here

 

its a different way they measured. http://www.datsuns.com/Tech/datsundyno.htm just some pules of different motors.

 

ok so that little graph says my z makes
L28 (280Z 5-speed)(RWD)
Stock
120.9hp @ 5200rpm
135.7ft/lbs @ 4100rpm
(actual sheet)(modified from this page)

except mines a 4 speed, if it even matters.
this cant be true if it is ill cry. ill pull my eyes out the back of my head and step on them. theres no dam way this car makes as much hp as my other **** rocket 4cilinder ill go into deep deep depression and become a zoloft addict.
why does it say she makes 180hp on the car and this sheet says it makes jack ****.
i might as well cut through the floor pan and push it with my feet.

why when i google around and look through here i find that max youl whip out is 200hp with just sum lite mods from a n/a why ..... you cant go from 120 to 200 that easy youd have to startt at around 180
should i just sell this thing and go buy a go cart.

 

turbos make about 200 hp. they werent power cars. lol. they were light rear wheel drive good for corner cars. you want power go buy an american V8. and its true. they only run 18 to 17 second quarter mile stock. the FI on these cars blew why do you think the carbed 240's were so much faster until the turbo came out and even then, barely beat the carbed 240/260's

 

what so this car only makes 120hp?

 

something like that, do a google search yo!!!

 

the 280 stock is a good 16 sec car....i dont wanna talk 1/4 time. bc to me it seems very stupid. im trying to put it in easy terms. a 280 can can be around 145ish. it all about tunning. (tuning a n/a to get 200 is another story) also understand you 4 speed has better 1st and 2 gear then most 5 speeds. but the 4 speed is weaker. again in easy terms and in perfect conditions. if lets say u had 200hp in a 280 you could be very close to a 13 sec. not saying thats fast or w/e. these are classic sports cars. try not to ask to much out of them when stock. these cars are meant to tear up corners and have a blast. they can do a strip but its not their strong point. just look at power to weight ratio.

 

what about.... 200hp in a 260Z .... hmmmm..... and yeah i lost faith in the datsun trannies, i thought mine would go out kinda quick.... but not after 100 miles quik lol

 

what im trying to get plus more

 

I wouldn't say it's so much the Fuel Injection considering motortrend reviews said the 280Z was pretty much on par with the early 240Z. It was more or less the fact that the 240Z weighed under 2400lbs, when you add emissions, and nearly 400-500lbs of extra eight, that's definitely going to slow a car down.

 

but i have did you read what i had just posted.
i find info every where the car makes anywhare from 173-185hp.
this is the first THING/place ive found that explanes it makes a mere 120.
again back to the question.
the nissan plate under my hood that says the car makes 180hp @ 5400 rpm, its complete bullshit? its a lil trick sum 1 tried to play ? """((it dosent match the vin????))""""" it isint stock PLACED THERE????........but i think it is and it does.
so is nissan lying to or is that sheet wrong.

HOW MUCH POWER DOES IT MAKE.