In need of some fast tech anwsers. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

*downshift_sideways* · 10-17-2008, 07:39 PM

So.

I just swapped an s13 SR into a hatch a few days ago.

I bought the motorset from JonWayne (Sil-ABC) so I know it's legit.

So I pulled out the old ka...swapped in the SR..wired everything up.

everything seemed fine.

I cranked it over...fired up fine first time. w00t.

but It was sounding like a subbie...

I checked the coilpacks they are getting power to them. (pulse light)
I even tried replacing the coilpacks from my last motorset; which I new worked...but nothing changed.
and I replaced the coilpack harness from my last motorset; which I new worked...but nothing changed.

I checked the injectors aswell. (pulse light) I even pulled out the multimeter and the numbers were correct.

they seem to be getting power to them aswell.

The car is misfiring...and honestly...I'm stumped..

I checked the fuel sending lines...and they are sending fuel fine.

where should I be looking next?

I was thinking about the ecu wiring...

any help would be greatly appreciated.

EDIT*

I even put new iridium plugs in and gapped them at .28

#1 and #3 are the cylinders misfiring.

Ignitor is good. Coilpacks are good. No damage on the rubber ends. Spark plugs are not getting blow-by.

lflkajfj12123 · 10-17-2008, 07:44 PM

did you check the plugs?

when you take out a coil at time does the engine keep up or does it drop

listen for each cylinder

see any fouling?

cc4usmc · 10-17-2008, 07:44 PM

http://zilvia.net/f/tech-talk/199341...ia-blu808.html

*downshift_sideways* · 10-17-2008, 07:46 PM

New plugs..forgot to mention.

Om1kron · 10-17-2008, 07:48 PM

sounds like some vacuum lines are hooked up backwards lol.

cc4usmc · 10-17-2008, 07:51 PM

I was going to say a vacuum leak, or some sort of leak period.

lflkajfj12123 · 10-17-2008, 07:52 PM

Quote:

Originally Posted by downshift_sideways

New plugs..forgot to mention.

correct gap?? .03?

how are the boots on the coils make sure no fouling or damage

could cause the spark to arc early (i've had this happen and it caused a misfire)

did you test spark by connecting the spark plug to the coil and then checking

not oh okay new plugs and i tested the coil?

*downshift_sideways* · 10-17-2008, 07:58 PM

^Yea.

New plugs..coilpacks are working fine.

Ecu threw code 55.
everythings okay.

vacuum lines are all hooked up correctly.

I might need to check the pinout from my ecu to the injectors.
#1 and #3 are misfiring.

lflkajfj12123 · 10-17-2008, 08:08 PM

sounds like that could be the problem

other than that i just think air / vacuum lines

lflkajfj12123 · 10-17-2008, 08:12 PM

maybe TPS of MAFS connections loose?

possible? check check

*downshift_sideways* · 10-17-2008, 08:14 PM

TPS is fine.

That was one of the first things I checked.

TPS at closed throttle registers at .44 volts.

CAS is fine. If Jon never touched it ...it should be fine.

Last thing...Is to check the timing.

drftwerks · 10-17-2008, 08:16 PM

how much fuel is getting to engine, new filter?

lflkajfj12123 · 10-17-2008, 08:18 PM

i doubt its the filter lol

everytime i think thats the problem i replace it and it fixes nothing

drftwerks · 10-17-2008, 08:22 PM

but it should always be done anyway

*downshift_sideways* · 10-17-2008, 08:32 PM

Yea....

Fuel delivery should be fine.

Shitload of fuel squirted out as I did a fuel reading on it.

I'll try replacing that too while I'm at it.

lflkajfj12123 · 10-17-2008, 09:13 PM

lol dude did u take out the fuel pump fuse first??

SDS13COUPE · 10-17-2008, 09:17 PM

What about your ignitor chip/wiring. I had a similar issue, but I tore the wiring apart and found that the shielding wire to my #1 coilpack was grounding on my signal wire. This caused a subie sounding misfire. I trimmed the excess insulation, and cleaned up the harness and after that no problem. I just tested continuity in the wiring and found it. GL.

Mi Beardo es Loco · 10-17-2008, 09:41 PM

had that problem in my Diesel. Ended up being a kinked vaccum line. Unlikely but worth a look.

silviaguy240 · 10-17-2008, 10:22 PM

physically unhook your injectors one by one. dont just use a pulse light, if they're clogged they arent shooting fuel!

*downshift_sideways* · 10-18-2008, 01:12 AM

^ I actually took apart each injector and inspected them, and replaced the O rings on each one. I let the car run while unplugging each injector...as I pulled out #1,3. Nothing happened and the car didn't want to die.

Since #2,4 are working properly(and stumble when pulled out), I swapped #2 with #1...and still no stumbling when I performed a check.
I believe the problem remains on the wiring.
Tomorrow I'm tearing apart the entire wiring harness and checking for any faulty wires.
I'd might as well just tuck all my wiring while I'm at it.

S13SDCOUPE: I actually replaced the entire coilpack harness with the one from my last motorset that I knew ran perfectly well...and the problem still remains..I believe the problem might be somewhere after the coilpack sub-harness.

I'll update this thread tomorrow.

*fliprayzin240sx* · 10-18-2008, 04:36 AM

I spy the timing is off...double check the timing.

HalveBlue · 10-18-2008, 07:10 AM

Timing! I knew that was it! Even when it was the bears, I knew it
was the timing.*

Check timing x2.

*P.S. I don't really know if it's timing or not, but it sure sounds like it. Good Luck!

*downshift_sideways* · 10-18-2008, 07:13 AM

^lols!

Thanks <3

I'll check it later today.

Tearlessj · 10-18-2008, 07:14 AM

Werd, timing was the first thing that came to mind. Good luck man, I know that shits frustrating.

SDS13COUPE · 10-18-2008, 09:42 AM

Just use a dvom and test continuity through that subharness just to make sure. I just rewired my friend's subharness that he bought as a "drop-in" swap, and it was way off. Just double check it to be safe. GL.

**ThatGuy** · 10-18-2008, 11:35 AM

Tech Question in Off Topic?

Nope.

Moved..................

*downshift_sideways* · 10-18-2008, 02:05 PM

^Oh thanks Barry <3

96Turbo · 10-18-2008, 02:41 PM

Quote:

Originally Posted by downshift_sideways

TPS is fine.

That was one of the first things I checked.

TPS at closed throttle registers at .44 volts.

CAS is fine. If Jon never touched it ...it should be fine.

Last thing...Is to check the timing.

that should be one of the first things to check. let us know what you find out

10-17-2008, 07:46 PM	#4
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	New plugs..forgot to mention. __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only"

10-17-2008, 07:48 PM	#5
Om1kron Post Whore! Join Date: Sep 2004 Location: Simi Valley, CA Age: 40 Posts: 6,879 Trader Rating: (15) Feedback Score: 15 reviews	sounds like some vacuum lines are hooked up backwards lol. __________________ Wayne

10-17-2008, 07:58 PM	#8
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	^Yea. New plugs..coilpacks are working fine. Ecu threw code 55. everythings okay. vacuum lines are all hooked up correctly. I might need to check the pinout from my ecu to the injectors. #1 and #3 are misfiring. __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only"

10-17-2008, 08:14 PM	#11
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	TPS is fine. That was one of the first things I checked. TPS at closed throttle registers at .44 volts. CAS is fine. If Jon never touched it ...it should be fine. Last thing...Is to check the timing. __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only"

10-17-2008, 08:16 PM	#12
drftwerks Nissanaholic! Join Date: Mar 2004 Location: california Posts: 2,343 Trader Rating: (1) Feedback Score: 1 reviews	how much fuel is getting to engine, new filter? __________________ giantroboteyes.wordpress.com/

10-17-2008, 07:39 PM	#1
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	In need of some fast tech anwsers. So. I just swapped an s13 SR into a hatch a few days ago. I bought the motorset from JonWayne (Sil-ABC) so I know it's legit. So I pulled out the old ka...swapped in the SR..wired everything up. everything seemed fine. I cranked it over...fired up fine first time. w00t. but It was sounding like a subbie... I checked the coilpacks they are getting power to them. (pulse light) I even tried replacing the coilpacks from my last motorset; which I new worked...but nothing changed. and I replaced the coilpack harness from my last motorset; which I new worked...but nothing changed. I checked the injectors aswell. (pulse light) I even pulled out the multimeter and the numbers were correct. they seem to be getting power to them aswell. The car is misfiring...and honestly...I'm stumped.. I checked the fuel sending lines...and they are sending fuel fine. where should I be looking next? I was thinking about the ecu wiring... any help would be greatly appreciated. EDIT* I even put new iridium plugs in and gapped them at .28 #1 and #3 are the cylinders misfiring. Ignitor is good. Coilpacks are good. No damage on the rubber ends. Spark plugs are not getting blow-by. __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only" Last edited by downshift_sideways; 10-18-2008 at 01:15 AM..

10-17-2008, 07:44 PM	#2
lflkajfj12123 Join Date: Apr 2007 Location: 　　　　　　　　 Posts: 8,480 Trader Rating: (20) Feedback Score: 20 reviews	did you check the plugs? when you take out a coil at time does the engine keep up or does it drop listen for each cylinder see any fouling?

10-17-2008, 08:08 PM	#9
lflkajfj12123 Join Date: Apr 2007 Location: 　　　　　　　　 Posts: 8,480 Trader Rating: (20) Feedback Score: 20 reviews	sounds like that could be the problem other than that i just think air / vacuum lines

10-17-2008, 08:12 PM	#10
lflkajfj12123 Join Date: Apr 2007 Location: 　　　　　　　　 Posts: 8,480 Trader Rating: (20) Feedback Score: 20 reviews	maybe TPS of MAFS connections loose? possible? check check

10-17-2008, 08:18 PM	#13
lflkajfj12123 Join Date: Apr 2007 Location: 　　　　　　　　 Posts: 8,480 Trader Rating: (20) Feedback Score: 20 reviews	i doubt its the filter lol everytime i think thats the problem i replace it and it fixes nothing

10-17-2008, 08:22 PM	#14
drftwerks Nissanaholic! Join Date: Mar 2004 Location: california Posts: 2,343 Trader Rating: (1) Feedback Score: 1 reviews	but it should always be done anyway __________________ giantroboteyes.wordpress.com/

10-17-2008, 08:32 PM	#15
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	Yea.... Fuel delivery should be fine. Shitload of fuel squirted out as I did a fuel reading on it. I'll try replacing that too while I'm at it. __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only"

10-17-2008, 09:13 PM	#16
lflkajfj12123 Join Date: Apr 2007 Location: 　　　　　　　　 Posts: 8,480 Trader Rating: (20) Feedback Score: 20 reviews	lol dude did u take out the fuel pump fuse first??

10-17-2008, 09:17 PM	#17
SDS13COUPE Zilvia FREAK! Join Date: May 2006 Location: San Diego Age: 35 Posts: 1,402 Trader Rating: (19) Feedback Score: 19 reviews	What about your ignitor chip/wiring. I had a similar issue, but I tore the wiring apart and found that the shielding wire to my #1 coilpack was grounding on my signal wire. This caused a subie sounding misfire. I trimmed the excess insulation, and cleaned up the harness and after that no problem. I just tested continuity in the wiring and found it. GL. Last edited by SDS13COUPE; 10-17-2008 at 09:47 PM..

10-17-2008, 10:22 PM	#19
silviaguy240 Post Whore! Join Date: Feb 2005 Location: Delaware Age: 32 Posts: 3,719 Trader Rating: (15) Feedback Score: 15 reviews	physically unhook your injectors one by one. dont just use a pulse light, if they're clogged they arent shooting fuel! __________________

10-18-2008, 01:12 AM	#20
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	^ I actually took apart each injector and inspected them, and replaced the O rings on each one. I let the car run while unplugging each injector...as I pulled out #1,3. Nothing happened and the car didn't want to die. Since #2,4 are working properly(and stumble when pulled out), I swapped #2 with #1...and still no stumbling when I performed a check. I believe the problem remains on the wiring. Tomorrow I'm tearing apart the entire wiring harness and checking for any faulty wires. I'd might as well just tuck all my wiring while I'm at it. S13SDCOUPE: I actually replaced the entire coilpack harness with the one from my last motorset that I knew ran perfectly well...and the problem still remains..I believe the problem might be somewhere after the coilpack sub-harness. I'll update this thread tomorrow. __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only"

10-18-2008, 04:36 AM	#21
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	I spy the timing is off...double check the timing. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

10-18-2008, 07:10 AM	#22
HalveBlue Zilvia FREAK! Join Date: Mar 2004 Location: I'm somewhere where I don't know where I am! Posts: 1,549 Trader Rating: (0) Feedback Score: 0 reviews	Timing! I knew that was it! Even when it was the bears, I knew it was the timing.* Check timing x2. *P.S. I don't really know if it's timing or not, but it sure sounds like it. Good Luck!

10-18-2008, 07:13 AM	#23
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	^lols! Thanks <3 I'll check it later today. __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only"

10-18-2008, 07:14 AM	#24
Tearlessj Nissanaholic! Join Date: Feb 2007 Location: Memphis Age: 29 Posts: 1,907 Trader Rating: (6) Feedback Score: 6 reviews	Werd, timing was the first thing that came to mind. Good luck man, I know that shits frustrating. __________________ Nagasaki Motors Friends help you move. Real friends help you move bodies.

10-18-2008, 09:42 AM	#25
SDS13COUPE Zilvia FREAK! Join Date: May 2006 Location: San Diego Age: 35 Posts: 1,402 Trader Rating: (19) Feedback Score: 19 reviews	Just use a dvom and test continuity through that subharness just to make sure. I just rewired my friend's subharness that he bought as a "drop-in" swap, and it was way off. Just double check it to be safe. GL.

10-18-2008, 11:35 AM	#26
ThatGuy Admin Asshole Join Date: Mar 2002 Location: Retired Age: 41 Posts: 20,394 Trader Rating: (0) Rides Gallery: ThatGuy Feedback Score: 0 reviews	Tech Question in Off Topic? Nope. Moved.................. __________________ "Speak softly,..." -Pres. Teddy Roosevelt "Be polite, be professional, ..." -Gen. James Mattis

10-18-2008, 02:05 PM	#27
downshift_sideways No Limit Soldier. Join Date: Jan 2006 Location: Hayward CA, San Gabriel CA Age: 34 Posts: 5,550 Trader Rating: (0) Rides Gallery: downshift_sideways Feedback Score: 0 reviews	^Oh thanks Barry <3 __________________ allntrlundrgrnd: "you never really appreciate your parents fridge until you look into your own and its full of condiments only"

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