ka24 sohc problems - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

myles88 · 11-06-2006, 10:38 PM

So as im driving along my engine jerks violently if i let off the gas, but if i press on the gas its smooths out, and as long as im giving it gas, it is smooth...if im just cruising at a steady speed it doesnt jerk as bad but still does, if i go full throttle it blows white smoke sometimes, then sometimes it blows black smoke, it also stalls a lot when as its warming up, i think it may have something to do with the m.a.f, but im new to these...ANY help would be awesome, if you need more info or have questions just ask...

thanks
myles

IngS14 · 11-06-2006, 11:19 PM

sound like 1 bad spark plug or wire running on 3 cylinders,blowing smoke that just mean that its high milages and piston rings are wearing out burning oil.ahhhhh......just rip that danm single cam motor out mag,swap a twin cam or sr20det!!

myles88 · 11-08-2006, 12:21 AM

well im not losing any oil, thats where im confused, it has something to do with it running extremely lean or rich, it seems like it cant make up its mind, and i already check all my spark plugs and everything checks out ok...haha, im saving up for the sr20, but i need atleast a car that runs right now...

blownoffvalve · 11-08-2006, 01:07 AM

How many miles you have on it. It may be time to re install the plugs. new ones don't cost too much. NGK platinums

SiI40sx · 11-08-2006, 02:13 AM

Do a full tune up (spark, wires, cap, injector cleaner (or new injectors) clean the maf, clean the throttle, iacv etc etc)

myles88 · 11-08-2006, 08:53 PM

ya, i already had done all that, but i fixed it today...it was the m.a.f, it was rigged on by the last guy that had it and i didnt realize it, it was in direct air flow, which its not supposed to be from what i have read...but thanks for all the input

11-06-2006, 10:38 PM	#1
myles88 Join Date: Nov 2006 Location: greenwood Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	ka24 sohc problems So as im driving along my engine jerks violently if i let off the gas, but if i press on the gas its smooths out, and as long as im giving it gas, it is smooth...if im just cruising at a steady speed it doesnt jerk as bad but still does, if i go full throttle it blows white smoke sometimes, then sometimes it blows black smoke, it also stalls a lot when as its warming up, i think it may have something to do with the m.a.f, but im new to these...ANY help would be awesome, if you need more info or have questions just ask... thanks myles

11-06-2006, 11:19 PM	#2
IngS14 Zilvia Addict Join Date: Jul 2004 Location: DriftHeaven,CA Age: 45 Posts: 647 Trader Rating: (7) Feedback Score: 7 reviews	sound like 1 bad spark plug or wire running on 3 cylinders,blowing smoke that just mean that its high milages and piston rings are wearing out burning oil.ahhhhh......just rip that danm single cam motor out mag,swap a twin cam or sr20det!! __________________

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11-08-2006, 12:21 AM	#3
myles88 Join Date: Nov 2006 Location: greenwood Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	well im not losing any oil, thats where im confused, it has something to do with it running extremely lean or rich, it seems like it cant make up its mind, and i already check all my spark plugs and everything checks out ok...haha, im saving up for the sr20, but i need atleast a car that runs right now...

11-08-2006, 01:07 AM	#4
blownoffvalve Leaky Injector Join Date: Oct 2006 Location: cali Posts: 108 Trader Rating: (0) Feedback Score: 0 reviews	How many miles you have on it. It may be time to re install the plugs. new ones don't cost too much. NGK platinums

11-08-2006, 02:13 AM	#5
SiI40sx BANNED Join Date: Mar 2006 Location: Bass bumpin, mind trippin Age: 38 Posts: 3,394 Trader Rating: (0) Rides Gallery: SiI40sx Feedback Score: 0 reviews	Do a full tune up (spark, wires, cap, injector cleaner (or new injectors) clean the maf, clean the throttle, iacv etc etc)

11-08-2006, 08:53 PM	#6
myles88 Join Date: Nov 2006 Location: greenwood Posts: 12 Trader Rating: (0) Feedback Score: 0 reviews	ya, i already had done all that, but i fixed it today...it was the m.a.f, it was rigged on by the last guy that had it and i didnt realize it, it was in direct air flow, which its not supposed to be from what i have read...but thanks for all the input