Problems With Stuttering Throttle/Fuel Delivery?

[Buck01]

Hey Guys I'm New Here But have A 1996 240sx SE, it Has 157,101 Miles On It And I Just Did a Tune Up. I Replaced The Fuel Filter, Plugs And Wires, Distributer Cap and Changed the Oil....But I'm Noticing A Slight Stuttering In the Throttle, When I Run The Car Sometimes It Starts Bogging And Stuttering For a Second But Then After It's Fine. Do You Guys Think The Fuel Injectors Need Cleaning? Let Me Know Thanks.

[ZOMG.SR20]

idk i thought of something but got a brain fart, sorry

[Goldstreak]

Did you purge the fuel sysem of air, after changing the filter? Gap the plugs?

[Buck01]

No I Actually Didn't....But I The Car Was Having That Problem Before The Tune Up.

[ZOMG.SR20]

did you change out the Distributor

[Salem240]

does it only do it after the motor warms up and/or drive it for more than 5 min? I've prob got the same issue. I posted it in the tech forum and even included a vid today.

take a look at mine & see if it's the same issuehttp://www.youtube.com/watch?v=DHa2PhKNu-U

[Buck01]

It Happens After The Car Is Warm And It's Similar To Your Problem But It Stutters When I'm Accelerating....But Only Sometimes.

[Buck01]

I Changed Out The Distributer Cap Yes.

[Salem240]

mine does it randomly too and on accel at about half throttle... I've replaced just about everything to find it

[Buck01]

I've Been Told It Could Be The Oxygen Sensor But I Don't Know.....I Put Fuel Injector Cleaner In The Car Today Maybe That Might Help.

[Salem240]

Let's see...... I've replaced the fuel pump, front o2 sensor, throttle position sensor, spark plugs, distributor cap, rotor button, wires, pcv valve ( a PITA) and fuel filter. I've cleaned the mass air flow sensor, air intake temp sensor, throttle body, seafoamed and injector cleaner. I even changed out the ECM. I can't find a solution

[YuNg1's_240sx]

did you guys check for cracks at the ends of the wires??one of mine is cracked and and it had a slight leak of fuel...maybe this. But i have a feeling it could be the valves also, but im only slightly educated in the top end of motors.-Arash

[tunerinms]

My s14 did the same thing for about a month. It went away tho so i never really gave it any thought.

[YuNg1's_240sx]

just trying to get some info in... was your exhaust by any chance broken like mine?

[240sxFTW]

I dont feel like reading your post but judging from your title a stuttering throttle is almost always a bad ground.

[tunerinms]

Nah my exhaust was fine.

[YuNg1's_240sx]

hey good call. 240sxFTWhttp://forums.nicoclub.com/zerothread/159907http://forums.nicoclub.com/zerothread/216236there is another problem i have though, my car doesn't start all the time. Now im guessing there is a ground on the starter that is causing this.what would you guys say?-Arash

[WutsDrift]

My 14 does the same thing. I went to Auto Zone and got them to run a free func check on it cause my engine light is on and I got an O2 Sensor malfunction so you might wanna check that out or you could have a problem with your MAF.

[rsagen]

mine stutters when it just starts up, and if you put it into gear it would die.

[ZOMG.SR20]

I Changed Out The Distributer Cap Yes.

no

the ENTIRE distributor stalk.... cause i had this problem too till i swapped it out for a new one

[Buck01]

Actually My Engine Check Light Is On Too...And Someone Told Me It Could Be Th O2 Sensor....Did Auto Zone Install it For You Toz/

[Buck01]

no

the ENTIRE distributor stalk.... cause i had this problem too till i swapped it out for a new one

No I Didn't But I'm Gonna GOo Check The 02 Sensor And The Try That.

[YuNg1's_240sx]

hmmm. It might be that O2 sensor for me because ever since my exhaust broke, its been doing this. But i think for me, my best bet would be to get the exhaust replaced in the first place, then we will move on from there.