SH***Y gas milage?

[tricktunes240]

Hey ive had my 92 dohc for about half a year with basic bolt ons...i,h,e, high flow cat.....and my gas milage is worse then a hummer H2....one of the reasons i got a 240 was kinda lookin for the 4 cyl gas milage...with the way gas is these days i was wondering if anyone knew some ways to fix up my gas robbing 240.....

[Ezzo]

how bad are we talking here? from what I remember reading before the H2 gets 13mpg you should be geting 22-27mph with your 240. maybe a little lower due to age.

When was the last time you checked or replaced your fuel filter? Checked for leakey o-rings? Dirty Air Filter? hows the maintenance record on your 240?

[SeanC]

i get 23 everyday half in-town half highway. on my way to california i got 30 mpg consistantly.

[rsmithdrift]

I get 28mpg half city, half highway. I have an intake, Hi-Flow Cat, NGK plugs + Wires, Elect. fan, 300zxTT fuel filter and that's it.

When I got the car I was getting 19mpg. After I replaced the 02 sensor I was up to 22. After the NGK's, coil, cap, rotor and fuel filter I was up to 23, after the elect. fan I was up to 25, after the intake and hi-flow cat I am now up to 28mpg.

CTS, MAF, 02, plugs + wires + cap + rotor + coil, dirty air filter, pluged cat/exhaust, and vacumn leak are common problems that cause bad gas mileage.

[tricktunes240]

great thanks for the info thats good info ill try getting some plug wires and O2 sensor becasue everything else that you mentioned i have new so ill see what happens....

thanks

[zer0c123]

Are your smog components still there, like the EGR?

[tricktunes240]

My egr is definelty removed.....well at least from my exhaust and plugged with a silicone gasket....

[discopotatoe]

idk about over there but in hawaii gas is over 3 bucks a gallon...i noticed with both my ka and sr...i only get about 20 miles to the gallon...removed emssions...changed fuel filter...nada

[tricktunes240]

i think im just gonna really have to go easy on the throttle thats the only way? Anyone suspect injectors?

[InsanityInc]

My egr is definelty removed.....well at least from my exhaust and plugged with a silicone gasket....

Do you mean the EGR valve is just sitting on the intake manifold with nothing connected to it? That will cause a vacuum leak, assuming you still have the vacuum lines connected to the valve.

[mmm240]

i think im just gonna really have to go easy on the throttle thats the only way? Anyone suspect injectors?

worst i have ever gotten was 24mpg (93 240), thats all city driving, with a few bolt ons. i would say there is more to it than you just getting on the gas.

as for injectors, i have never had a bad one, but it is something i imagine you would feel (like a miss?)

i used to work at an emission testing place and learned to feel when a car was miss firing, always failed too

[tricktunes240]

No no there isnt any vacuum leaks at all i properly plugged any holes and lines....there is no leaks from what i know which is basics but i can still nig rig some stuff....any other suggestions?