ka24de issues-video - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

MurderdS13 · 11-15-2009, 02:50 PM

ok so heres my issue(i searched MY prob didnt show)

when initially cranked the car idles fine, then upon heavy accel it breaks up BAD, like boost leak(but i has no boost)

then after it get to operating temp it runs fine..i have replaced the engine coolant temp sens,flushed antifreeze,cleaned mafs,converted to MSD blaster 2 coil, and bought new cap,rotor button,plugs,wires,and dizzy.. i have no idea wtf it is..and its getting to be quite frustrating..

also everyonce in awhile it will go from 700-800rpm idle and sit right at 1500..and then it floods itself out and shutf off..then i sit there for about 10 mins to wait for gas to evap..then boom it will crank right up and shoots black smoke out..PLEASE help im moving soon and this is the way im gettin there

keep in mind this is WOT

h22ek · 11-15-2009, 07:28 PM

any check engine lights?

MurderdS13 · 11-15-2009, 07:30 PM

nope

BIGGJERRYC · 11-15-2009, 08:36 PM

injectors?

MurderdS13 · 11-15-2009, 08:50 PM

maybe they are stuck open perhaps? FPR maybe also?

BIGGJERRYC · 11-15-2009, 08:55 PM

yea it has to be one of two things... electric or fuel.. and if its electric... that's one hell of a fluctuation... and be honest... did you check your spark plugs? because i one time put plugs in my old civic.. 4 months later they were shot but i was telling everyone oh yea.. new plugs and all... because i swore up and down there was no way they could have went bad that fast... my car ran just like yours. the spark plugs were SHOTTTT

Shvltme93Notch · 11-15-2009, 09:02 PM

i just have an on and off misfire. sometimes it misfires idles like shit and revvs poorly until 3k then pulls hard. other times it runs perfectly.

FRoSt415 · 11-16-2009, 04:17 PM

id say start in the fuel delivery system. trouble shoot it. check fuel injectors with a dvom. see what resistance you get. from their work backwards or forwards in the fuel system

11-15-2009, 02:50 PM	#1
MurderdS13 Join Date: Nov 2009 Location: ms for now Age: 41 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	ka24de issues-video ok so heres my issue(i searched MY prob didnt show) when initially cranked the car idles fine, then upon heavy accel it breaks up BAD, like boost leak(but i has no boost) then after it get to operating temp it runs fine..i have replaced the engine coolant temp sens,flushed antifreeze,cleaned mafs,converted to MSD blaster 2 coil, and bought new cap,rotor button,plugs,wires,and dizzy.. i have no idea wtf it is..and its getting to be quite frustrating.. also everyonce in awhile it will go from 700-800rpm idle and sit right at 1500..and then it floods itself out and shutf off..then i sit there for about 10 mins to wait for gas to evap..then boom it will crank right up and shoots black smoke out..PLEASE help im moving soon and this is the way im gettin there keep in mind this is WOT

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11-15-2009, 07:28 PM	#2
h22ek Leaky Injector Join Date: Jul 2009 Location: Columbu, Ga Posts: 75 Trader Rating: (0) Feedback Score: 0 reviews	any check engine lights?

11-15-2009, 07:30 PM	#3
MurderdS13 Join Date: Nov 2009 Location: ms for now Age: 41 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	nope

11-15-2009, 08:36 PM	#4
BIGGJERRYC Join Date: Jun 2009 Location: Hatfield, PA Age: 35 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	injectors?

11-15-2009, 08:50 PM	#5
MurderdS13 Join Date: Nov 2009 Location: ms for now Age: 41 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	maybe they are stuck open perhaps? FPR maybe also?

11-15-2009, 08:55 PM	#6
BIGGJERRYC Join Date: Jun 2009 Location: Hatfield, PA Age: 35 Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	yea it has to be one of two things... electric or fuel.. and if its electric... that's one hell of a fluctuation... and be honest... did you check your spark plugs? because i one time put plugs in my old civic.. 4 months later they were shot but i was telling everyone oh yea.. new plugs and all... because i swore up and down there was no way they could have went bad that fast... my car ran just like yours. the spark plugs were SHOTTTT

11-15-2009, 09:02 PM	#7
Shvltme93Notch Leaky Injector Join Date: Oct 2009 Location: Coeur d'Alene ID Age: 35 Posts: 55 Trader Rating: (1) Feedback Score: 1 reviews	i just have an on and off misfire. sometimes it misfires idles like shit and revvs poorly until 3k then pulls hard. other times it runs perfectly.

11-16-2009, 04:17 PM	#8
FRoSt415 Zilvia Junkie Join Date: Dec 2006 Location: san francisco Age: 37 Posts: 305 Trader Rating: (0) Feedback Score: 0 reviews	id say start in the fuel delivery system. trouble shoot it. check fuel injectors with a dvom. see what resistance you get. from their work backwards or forwards in the fuel system