bad gas mileage and unkown vaccuum issue, running out of ideas

[XXX4life]

ok so my car is getting barely 200miles on a tank of gas. i've replaced the collant temp sensor, o2 sensor, plugs, wires, cap, rotor and fuel filter, and injector o rings, and the car still drinks gas, also the vaccum line after the tbody is open and if i plug iut the car barely runs? i'm really running out of ideas here, i'm about to sell the car cause i don't know what else to do, it's a 90 with a 91 ka24de swapped in, any ideas?

thanks

[kingsol]

check the hard lines... i had a small crack close to where the fuel filter hose attached to the hardline, and also check the hoses attached to the fuel pump. can you smell gas anywhere, is your ecu throwing any codes? and make sure you check your gas cap too.

[s14 blacktop]

check your EGR hoses, its very important to inspect all the way around each hose, I had a similar problem but it turned out one of my egr hoses had a crack in it..

[ghostuss]

yea I have a similar problem. My ECU is throwing a EGR code. The weird thing is the O2 sensor seems pretty new. Anyone know a shop I can take this to for a look. I get worst mileage than a damn V6 American car.

[mistaanime]

hmm...whats werid...i use to get lik 260 for the tank...and rite now..im getting like 200...dunno wuts wrong..anyway..mah bad for stealin the thread...

[kingsol]

i'm getting 320 a tank and i think, or at least i thought, i'm getting bad gas mileage...

[doainwpg]

Right now i wouldn't be complaining if i got 200miles on a tank. the last couple weeks i've been getting about 100miles to a tank. so i've got to fix that and my lack of heat in my S13 in the next 2 days.

[skatanic28]

can you check your fuel pressure? and what kinda vacuum are you pulling at idle?

i usually get at least 350 on a tank, somethings gotta be pretty wrong.

[Maxtype 240]

I used to get 400+ when I was NA, ah the good old days. Gotta pay to play though.

Anyways, to check for vacuum leaks, disconnect the TPS (it will be easier to hear your engine response). Spray carb cleaner in very isolated areas, if you hear the engine rev, that is the result of carb cleaner entering your intake stream...

Jesse

[XXX4life]

fuel pressure is good, the vaccum line that comes out of the intake manifold after the tbody is open right now cause if i cap it the car runs like crap, the tps and timing are all fine, so i really have no clue what the hell is wrong

[weirdstyles.net]

fuel pressure is good, the vaccum line that comes out of the intake manifold after the tbody is open right now cause if i cap it the car runs like crap, the tps and timing are all fine, so i really have no clue what the hell is wrong
Not to high jack but hey look another 90 FB who hated his SOHC, decided on another motor and bought a Scion xB!!

<~ Owner: http://www.clubscion.com and a BOP 04 xB