HELP!!! SPUTTERING.....INJECTORS?

Information on the naturally-aspirated KA24E and KA24DE engines.
chrismo240sx
Posts: 490
Joined: Mon Feb 05, 2007 10:57 am
Car: 92 240sx HB
S13 Blacktop
Location: Coram, NY

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Hey i have a 93 240sx with 107,000 miles and just recently my car started sputtering randomly when i was driving home from work. Its weird...the car does this only when the engine is warmed up and if i give it more than about half throttle. When the engine is cold i can floor it and its fine and if the engine is warm i can only give it about half throttle before it starts like mis firing or sputtering. Does anyone know what this could be...i was thinking maybe the injectors but not sure....any help would be good thanks.


Dorifto12
Posts: 7
Joined: Tue Oct 17, 2006 1:48 pm
Car: 1990 240sx

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Check ground cables,i had the same problem and i cleaned out my flowmeter and changed my ground and it went away,still does it sometimes tho.(was much worse than it is now)

also check if you have a leaky injector.

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NotDave
Posts: 286
Joined: Mon Jul 05, 2004 7:57 am
Car: 96 240sx that needs paint

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put an ohm meter to the injectors...should read ~11

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seanman
Posts: 337
Joined: Mon Aug 14, 2006 8:25 pm
Car: 1989 Nissan 240sx

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or you hook up the ohm meter? posy to battery and neg to injector?
NotDave wrote:put an ohm meter to the injectors...should read ~11

silvia2slow
Posts: 32
Joined: Thu Dec 07, 2006 5:45 pm
Car: 1990 Nissan 240sx

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what about coolant temp sensor?? my car was doing the same thing (more of a jerking than sputtering) and i thought it was the injectors due to bad gas mileage and me smelling gas all the time. changed out that sensor and it went away.

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neverlift
Posts: 3699
Joined: Mon Apr 24, 2006 6:26 am

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if it starts clearing around 4000rpm its most likely the cts

BUILT S13
Posts: 22
Joined: Wed Oct 18, 2006 11:46 am
Car: Nissan 240sx
Contact:

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I just had this problem a couple days ago. I did a tune up changed the fuel filter and cleaned the injectors and the problem was fixed. does it only have problems when you take off, or all the time. My s13 was havin problems takin off, and now that the injectores are clean, it runs great.

Change fuel filter and clean injectors, you should be fine after that.


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