help please i cant figure it out :(( - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mike fonseca · 01-19-2011, 01:28 AM

I have a s13 with a ka24de my car runs perfectly fine n idle fine as well but as soon as I go in the free way or any time I go past 4k rpm the car bogs out it jerks back n toward n won't go past 4500-5000 rpm just jerks back n toward till I let go of the gas I've changed the fuel pump ,knock sensor,o2 sensor, I cleaned the maf n the tps n still nothing Idk what could be wrong with it some one please help me

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lexlaxlux · 01-19-2011, 02:15 AM

Did you check your timing? Upgrade cams? Anything you did to the motor before the problems had begun?

mike fonseca · 01-19-2011, 02:21 AM

No timing is good n no motor is bone stock problem just came out of no where I did a full tune up n still bogging won't go away n I have no check engine light ether

lexlaxlux · 01-19-2011, 02:31 AM

NO CEL usually indicates you might have something minor affecting a larger counterpart

I would suggest to you if you say that everything listed above had been checked--

-Recheck your Fuel pump and check for metal shavings around the filter
-Grab a friend and have him turn on the car.. Rev it up as you wiggle the engine harness for any shorts or bad connections
-If worse comes to worse pop off that valve cover and start looking inside.
-Rocker arm (shim buckets) & chain guides... notorious KA's

these all could be possible factors but it really comes down to everything you check and if you can eliminate all the non-existent problems

if its not electrical and something minor top end then SOL.

STEEZxIT · 01-19-2011, 02:33 AM

IACV. try to clean that.

mike fonseca · 01-20-2011, 01:19 AM

Ima try that thanx guys

nismoman · 01-20-2011, 09:18 AM

Sounds like an ignition system problem. Check coil ,distributor cap, rotor, plugs and wires

slider2828 · 01-20-2011, 09:49 AM

Sounds like that or a FPR problem.....

Kiro1968 · 01-20-2011, 10:25 AM

Since you replaced some components already, follow the Service Repair Manual and test the Camshaft Position Sensor, Crankshaft Position Sensor and MAF (actual test and not just cleaning it)

murffy · 01-20-2011, 03:00 PM

yea check the iavc and the voltage of the injectors and if ur injectors are good u might be running lean cuz of injectors being dirty or done put an after market fuel pump

01-19-2011, 01:28 AM	#1
mike fonseca Zilvia Addict Join Date: Aug 2008 Location: SoCal Age: 36 Posts: 770 Trader Rating: (43) Feedback Score: 43 reviews	help please i cant figure it out :(( I have a s13 with a ka24de my car runs perfectly fine n idle fine as well but as soon as I go in the free way or any time I go past 4k rpm the car bogs out it jerks back n toward n won't go past 4500-5000 rpm just jerks back n toward till I let go of the gas I've changed the fuel pump ,knock sensor,o2 sensor, I cleaned the maf n the tps n still nothing Idk what could be wrong with it some one please help me ( __________________ mike!

01-19-2011, 02:21 AM	#3
mike fonseca Zilvia Addict Join Date: Aug 2008 Location: SoCal Age: 36 Posts: 770 Trader Rating: (43) Feedback Score: 43 reviews	No timing is good n no motor is bone stock problem just came out of no where I did a full tune up n still bogging won't go away n I have no check engine light ether __________________ mike!

01-19-2011, 02:33 AM	#5
STEEZxIT Zilvia FREAK! Join Date: Oct 2009 Location: socal, man! Posts: 1,261 Trader Rating: (11) Feedback Score: 11 reviews	IACV. try to clean that. __________________ @dangerdamian

01-20-2011, 01:19 AM	#6
mike fonseca Zilvia Addict Join Date: Aug 2008 Location: SoCal Age: 36 Posts: 770 Trader Rating: (43) Feedback Score: 43 reviews	Ima try that thanx guys __________________ mike!

01-20-2011, 09:18 AM	#7
nismoman Zilvia Junkie Join Date: Jul 2005 Location: Bowie, MD Posts: 412 Trader Rating: (0) Feedback Score: 0 reviews	Sounds like an ignition system problem. Check coil ,distributor cap, rotor, plugs and wires __________________

01-19-2011, 02:15 AM	#2
lexlaxlux Zilvia Junkie Join Date: Mar 2010 Location: Socal Posts: 467 Trader Rating: (32) Feedback Score: 32 reviews	Did you check your timing? Upgrade cams? Anything you did to the motor before the problems had begun?

01-19-2011, 02:31 AM	#4
lexlaxlux Zilvia Junkie Join Date: Mar 2010 Location: Socal Posts: 467 Trader Rating: (32) Feedback Score: 32 reviews	NO CEL usually indicates you might have something minor affecting a larger counterpart I would suggest to you if you say that everything listed above had been checked-- -Recheck your Fuel pump and check for metal shavings around the filter -Grab a friend and have him turn on the car.. Rev it up as you wiggle the engine harness for any shorts or bad connections -If worse comes to worse pop off that valve cover and start looking inside. -Rocker arm (shim buckets) & chain guides... notorious KA's these all could be possible factors but it really comes down to everything you check and if you can eliminate all the non-existent problems if its not electrical and something minor top end then SOL.

01-20-2011, 09:49 AM	#8
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	Sounds like that or a FPR problem..... __________________ Turn and Burn!

01-20-2011, 10:25 AM	#9
Kiro1968 Leaky Injector Join Date: Mar 2004 Location: BehindYou Posts: 57 Trader Rating: (0) Feedback Score: 0 reviews	Since you replaced some components already, follow the Service Repair Manual and test the Camshaft Position Sensor, Crankshaft Position Sensor and MAF (actual test and not just cleaning it) __________________ 1995 240sx SE 5spd Red/Black 1993 240sx 5spd Coupe Red (SOLD)

01-20-2011, 03:00 PM	#10
murffy Zilvia Junkie Join Date: Apr 2008 Location: Orange county Age: 35 Posts: 585 Trader Rating: (44) Feedback Score: 44 reviews	yea check the iavc and the voltage of the injectors and if ur injectors are good u might be running lean cuz of injectors being dirty or done put an after market fuel pump