2 Dead Cylinders? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

rc1honda · 09-04-2008, 08:43 PM

Ok i went to the dyno to get a safc tune for my car and to see how much power im making. The guy told me that i was only running on 2 cyclinders and no dyno run was made. Take it easy on me im a complete noob and a freind of mine is helping along the way. As far as we can tell there is no boost leak. Compresion is good across the board around 150. The only thing i can think of is bad wiring but before putting in the injectors the all fired. Unsure about the timing. But like i said i really don't know my ass from a hole in the wall when it comes to this so i wanna see what you guys think. Thank in advance.

Mods
1991 240 coupe
SR redtop
z32 maf
gt2871r .86
Greddy FMIC hot/cold pipes
HKS SSQV
50lb injectors
Apexi SAFC
Manual BC

PS: where pretty sure the car was running crazy rich cuz we had to turn the SAFC down to like -40 to get it to even idle and rev. And the guy at the Dyno was talking like it was running lean. And saying we only need it at -10 to get it to idle and run right.

hunter8411 · 09-04-2008, 08:49 PM

You sure the injectors are not leaking causing the cylinders to flood?

I know you said they were brand new when you put them in. But I had to remove and reinstall some of my injectors over 6-7 times because the lower o-ring kept getting ripped causing the car to barely idle and run on 2-3 cylinders. I would pull the injectors and check the o-rings on them to be safe.

rc1honda · 09-04-2008, 09:05 PM

Yeah i will check that out this weekend. I really hope it's that simple. It would make sense though cuz the car was idling like crap and wasn't even really revving for awhile. Also i should check the plugs after running so rich for awile im sure there in bad shape to. How did you get the rings to stop tearing?

hunter8411 · 09-05-2008, 12:37 AM

took a ton of lube and just be careful when installing them. it took me a couple times before they finally went in properly.

09-04-2008, 08:43 PM	#1
rc1honda Zilvia Junkie Join Date: Aug 2008 Location: Chicago Age: 42 Posts: 433 Trader Rating: (5) Feedback Score: 5 reviews	2 Dead Cylinders? Ok i went to the dyno to get a safc tune for my car and to see how much power im making. The guy told me that i was only running on 2 cyclinders and no dyno run was made. Take it easy on me im a complete noob and a freind of mine is helping along the way. As far as we can tell there is no boost leak. Compresion is good across the board around 150. The only thing i can think of is bad wiring but before putting in the injectors the all fired. Unsure about the timing. But like i said i really don't know my ass from a hole in the wall when it comes to this so i wanna see what you guys think. Thank in advance. Mods 1991 240 coupe SR redtop z32 maf gt2871r .86 Greddy FMIC hot/cold pipes HKS SSQV 50lb injectors Apexi SAFC Manual BC PS: where pretty sure the car was running crazy rich cuz we had to turn the SAFC down to like -40 to get it to even idle and rev. And the guy at the Dyno was talking like it was running lean. And saying we only need it at -10 to get it to idle and run right.

09-04-2008, 08:49 PM	#2
hunter8411 Zilvia Addict Join Date: Sep 2005 Location: SoCal Age: 39 Posts: 664 Trader Rating: (20) Feedback Score: 20 reviews	You sure the injectors are not leaking causing the cylinders to flood? I know you said they were brand new when you put them in. But I had to remove and reinstall some of my injectors over 6-7 times because the lower o-ring kept getting ripped causing the car to barely idle and run on 2-3 cylinders. I would pull the injectors and check the o-rings on them to be safe.

09-04-2008, 09:05 PM	#3
rc1honda Zilvia Junkie Join Date: Aug 2008 Location: Chicago Age: 42 Posts: 433 Trader Rating: (5) Feedback Score: 5 reviews	Yeah i will check that out this weekend. I really hope it's that simple. It would make sense though cuz the car was idling like crap and wasn't even really revving for awhile. Also i should check the plugs after running so rich for awile im sure there in bad shape to. How did you get the rings to stop tearing?

09-05-2008, 12:37 AM	#4
hunter8411 Zilvia Addict Join Date: Sep 2005 Location: SoCal Age: 39 Posts: 664 Trader Rating: (20) Feedback Score: 20 reviews	took a ton of lube and just be careful when installing them. it took me a couple times before they finally went in properly.