Won't Idle New MAf - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Silvias14.5.0 · 12-18-2012, 01:26 PM

hey guys i've done tons of research on this and i haven't been able to find anything. Whats going on is i have a 1997 S14 i just took the engine out and replaced almost all of the gaskets on it. I put the engine back in and now it wont hold idle, i did some troubleshooting found out if i unplug the MAF it will idle fine so i got a new MAF. I just put the new maf on and the same issue is still occuring it wont hold idle with the maf plugged in. PLEASE HELP i have got to get the car running tonight.

!Zar! · 12-18-2012, 03:27 PM

Vacuum leak after the MAF is a possibility.

Silvias14.5.0 · 12-18-2012, 03:53 PM

You think like possibly in the manifold itself

germgerm · 01-07-2013, 11:41 PM

Did you ever fix this problem ?

Silvias14.5.0 · 01-07-2013, 11:43 PM

No and a new development when I leave the iacv disconnected from the intake tube it stays rubbing without a steady idle

Iconik · 01-07-2013, 11:52 PM

Have you tried cleaning out the IACV? Could be all carbon'd up causing idle to be off.

Silvias14.5.0 · 01-07-2013, 11:53 PM

Yes I have I took it apart and cleaned it the same issue is still occurring

Posted from Zilvia.net App for Android

SofaKingFast · 01-08-2013, 12:13 AM

Sounds like you definitely have a vacuum leak somewhere. Spray brake cleaner/maf cleaner with the engine running where you replaced the gaskets or suspect a leak. If idle goes up there's your leak. Good luck!

Sent from my DROID X2 using Tapatalk 2

Silvias14.5.0 · 01-08-2013, 12:17 AM

Alright man I appreciate it

Posted from Zilvia.net App for Android

Iconik · 01-08-2013, 12:21 AM

I'd be looking for Vacuum leaks, did you have the intake off? Everything plugged back in? Intake gaskets themselves seated correctly?

Edit: Got beaten to it lol.

SofaKingFast · 01-08-2013, 12:53 AM

Quote:

Originally Posted by Iconik

I'd be looking for Vacuum leaks yet, did you have the intake off? Everything plugged back in? Intake gaskets themselves seated correctly?

Edit: Got beaten to it lol.

I had a huge leak at the intake manifold because the intake gasket wasn't seated properly. I would definitely check there first, let us know how it goes.

Sent from my DROID X2 using Tapatalk 2

Silvias14.5.0 · 01-09-2013, 03:47 PM

Well tested it with the maf cleaner as soon as I sprayed it the idle was affected and it started smoking so dismantling tonight and I am also going to take out the plastic riser that is between the manifold and the head to get a better seal

Posted from Zilvia.net App for Android

Silvias14.5.0 · 01-13-2013, 01:58 AM

Just in case anybody was wondering turned out the intake gasket didn't seal correctly and well was sucking in air and somehow my 3 month old spark plugs had fouled out. I'll tell you what the frustration almost got to me to the point I almost sold the car but now that my baby is running the love was rekindled haha

Posted from Zilvia.net App for Android

SofaKingFast · 01-16-2013, 01:58 AM

I know the feeling...feels even better when you don't shell out extra cash to have a mechanic fix it. Glad you got her running right again!

Silvias14.5.0 · 01-17-2013, 10:49 PM

another question anybody know if a 10 bolt intake manifold will fit on a 11 bolt head

12-18-2012, 01:26 PM	#1
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	Won't Idle New MAf hey guys i've done tons of research on this and i haven't been able to find anything. Whats going on is i have a 1997 S14 i just took the engine out and replaced almost all of the gaskets on it. I put the engine back in and now it wont hold idle, i did some troubleshooting found out if i unplug the MAF it will idle fine so i got a new MAF. I just put the new maf on and the same issue is still occuring it wont hold idle with the maf plugged in. PLEASE HELP i have got to get the car running tonight.

12-18-2012, 03:27 PM	#2
!Zar! Post Whore! Join Date: Nov 2004 Location: North Korea Posts: 14,579 Trader Rating: (27) Feedback Score: 27 reviews	Vacuum leak after the MAF is a possibility. __________________

01-08-2013, 12:21 AM	#10
Iconik Join Date: Dec 2012 Location: Canada Age: 35 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	I'd be looking for Vacuum leaks, did you have the intake off? Everything plugged back in? Intake gaskets themselves seated correctly? Edit: Got beaten to it lol. Last edited by Iconik; 01-08-2013 at 05:12 PM..

12-18-2012, 03:53 PM	#3
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	You think like possibly in the manifold itself

01-07-2013, 11:41 PM	#4
germgerm Join Date: Jan 2012 Location: corona Age: 33 Posts: 44 Trader Rating: (1) Feedback Score: 1 reviews	Did you ever fix this problem ?

01-07-2013, 11:43 PM	#5
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	No and a new development when I leave the iacv disconnected from the intake tube it stays rubbing without a steady idle

01-07-2013, 11:52 PM	#6
Iconik Join Date: Dec 2012 Location: Canada Age: 35 Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	Have you tried cleaning out the IACV? Could be all carbon'd up causing idle to be off.

01-07-2013, 11:53 PM	#7
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	Yes I have I took it apart and cleaned it the same issue is still occurring Posted from Zilvia.net App for Android

01-08-2013, 12:13 AM	#8
SofaKingFast Zilvia Addict Join Date: May 2003 Location: Glendale/City of Industry Age: 44 Posts: 605 Trader Rating: (43) Feedback Score: 43 reviews	Sounds like you definitely have a vacuum leak somewhere. Spray brake cleaner/maf cleaner with the engine running where you replaced the gaskets or suspect a leak. If idle goes up there's your leak. Good luck! Sent from my DROID X2 using Tapatalk 2

01-08-2013, 12:17 AM	#9
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	Alright man I appreciate it Posted from Zilvia.net App for Android

01-09-2013, 03:47 PM	#12
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	Well tested it with the maf cleaner as soon as I sprayed it the idle was affected and it started smoking so dismantling tonight and I am also going to take out the plastic riser that is between the manifold and the head to get a better seal Posted from Zilvia.net App for Android

01-13-2013, 01:58 AM	#13
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	Just in case anybody was wondering turned out the intake gasket didn't seal correctly and well was sucking in air and somehow my 3 month old spark plugs had fouled out. I'll tell you what the frustration almost got to me to the point I almost sold the car but now that my baby is running the love was rekindled haha Posted from Zilvia.net App for Android

01-16-2013, 01:58 AM	#14
SofaKingFast Zilvia Addict Join Date: May 2003 Location: Glendale/City of Industry Age: 44 Posts: 605 Trader Rating: (43) Feedback Score: 43 reviews	I know the feeling...feels even better when you don't shell out extra cash to have a mechanic fix it. Glad you got her running right again!

01-17-2013, 10:49 PM	#15
Silvias14.5.0 Leaky Injector Join Date: Nov 2012 Location: Spring Hill, TN Age: 34 Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	another question anybody know if a 10 bolt intake manifold will fit on a 11 bolt head