Carb problem? Newbie needs help - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Punkin · 11-28-2003, 02:06 PM

I have a 90 240sx. It is having a "jerking" problem, like it's missing. Seems to be worse when it's cold. When I'm stopped at a red light it sometimes acts like it is going to die, the rpm's drop and the car jerks. I smell gas strongly when I start it up. Many time when I accelerate, it does not respond, but sort of sputters instead. Any help is appreciated

blu808 · 11-28-2003, 06:38 PM

240s dont have carbs, but anyway check your mass air flow meter, it is located on the intake pipe next to the air box, remove the plug and see if there is any rust on the connectors, if there is remove the rust, also remove the mass air flow meter and see if there is anything blocking it. If the mas is ok then check for any vacume leaks, (any little hoses hanging and if your motor is making a hissing sucking sound) then check your timing with a timing light, if its not any of those, get a sr20

Luke

zero.counter · 11-28-2003, 06:43 PM

Quote:

Originally posted by blu808
240s dont have carbs,

Actually, for the KA24E there was a carb swap available. Just an F.Y.I.

Var · 11-28-2003, 07:48 PM

could also be an ECT

deviousKA · 11-28-2003, 07:58 PM

haha, my 240 has carbs, 44mm mikunis, oh and its a de

. Check to make sure your cold warm up injector is shutting off, most likely your problem

zero.counter · 11-28-2003, 10:54 PM

Quote:

Originally posted by deviousKA
haha, my 240 has carbs, 44mm mikunis, oh and its a de . Check to make sure your cold warm up injector is shutting off, most likely your problem

Cool, I did not know that.

11-28-2003, 02:06 PM	#1
Punkin Join Date: Nov 2003 Location: Kingsport,TN Posts: 4 Trader Rating: (0) Feedback Score: 0 reviews	Carb problem? Newbie needs help I have a 90 240sx. It is having a "jerking" problem, like it's missing. Seems to be worse when it's cold. When I'm stopped at a red light it sometimes acts like it is going to die, the rpm's drop and the car jerks. I smell gas strongly when I start it up. Many time when I accelerate, it does not respond, but sort of sputters instead. Any help is appreciated

11-28-2003, 06:38 PM	#2
blu808 Post Whore! Join Date: Dec 2002 Location: Campbell, Ca Age: 42 Posts: 5,010 Trader Rating: (3) Feedback Score: 3 reviews	humm 240s dont have carbs, but anyway check your mass air flow meter, it is located on the intake pipe next to the air box, remove the plug and see if there is any rust on the connectors, if there is remove the rust, also remove the mass air flow meter and see if there is anything blocking it. If the mas is ok then check for any vacume leaks, (any little hoses hanging and if your motor is making a hissing sucking sound) then check your timing with a timing light, if its not any of those, get a sr20 Luke __________________

11-28-2003, 07:48 PM	#4
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	could also be an ECT __________________ Hi

11-28-2003, 07:58 PM	#5
deviousKA Zilvia Junkie Join Date: Jan 2003 Location: Idaho Posts: 437 Trader Rating: (0) Feedback Score: 0 reviews	haha, my 240 has carbs, 44mm mikunis, oh and its a de . Check to make sure your cold warm up injector is shutting off, most likely your problem