s13 sr20det red top cas way advanced to run right - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s2kguy17 · 03-12-2013, 07:26 PM

Ok heres the deal if I set the cas in correct timing 15 degrees the car runs but is really laggy and breaks up as soon as I hit any boost at all. Just breaks up and falls on its face. Now if I take the cas and advance it all the way runs damn good no breaking up has power in all rpm range. I have changed out with a friends running sr20 coils packs, ignitor, maf, new isis 255 fuel pump at the fuel rail im reading 40psi at idle. Ive swapped out full fuel rail with injectors. Im running ngk bk6 gapped at .28...
Any ideas ive searched very few people have had this issue and they never reported back what was wrong if they fixed it.

Over view
Timing set to 15 degrees breaks up really Laggy
When cas is advanced runs damn good no breaking up has power
Mech timing is tits I can post pictures if need be
No boost leaks
10psi isis t25/28
New 255 fuel pump
Swapped out fpr
Bkre6 gapped at .28
Coil packs seem to be ok no cracks but will test them with a volt meter
swapped maf
Swapped ignitor
New nissan coolant temp sensor
Tps is set 45 closed
Keeps fowling out spark plugs
I think my air to fuel wideband sesnor is taking a shit I need to test it
In boost while breaking up reads low 12s and higher
Any ideas??

OrangeVirus1 · 03-12-2013, 07:32 PM

you are running lean
if it runs well advanced, run it advanced as long as it isn't knocking

s2kguy17 · 03-12-2013, 07:41 PM

Ok how do I fix it from running lean then. I only have maybe 5 miles on this build trying not to blow it like I did the one right before this.

OrangeVirus1 · 03-12-2013, 08:09 PM

check your injectors clean them.

s2kguy17 · 03-12-2013, 08:16 PM

I have 8 of them now ive swapped them. And I bought a new engine harness from a prefect running sr and still doesnt seem right

s2kguy17 · 03-13-2013, 09:25 PM

Any other ideas. Im pretty much stumped

codyace · 03-13-2013, 10:10 PM

Did you verify cam timing/mechanical timing was correct? Restabbed the CAS at TDC correctly too?

s2kguy17 · 03-15-2013, 01:16 PM

carnagexxxx · 04-15-2013, 09:32 PM

I would bet that it's your plugs not either being the right ones or they are gapped wrong. When gapping the plug, you should just BARELY be able to feel any metal touching at the desired gap on the plug gapping tool. If you are having any trouble pulling the desired size through, it's too tight.

Also, I have found that they have changed the NGK part number. I can't remember where I saw it on here but you can search around.

The only other thing I would tell you to check is the grounds. There should be a big fat ground from the fender to the intake and there should also be a ground on the back of the motor. Make sure that the metal is clean and bright. Make sure that the battery is tight and giving at least 12.4V to the coils.

Aaronbradley1234 · 04-15-2013, 10:10 PM

Dirty maf? Boost leak? I know this sounds dumb but what octane are you running? I'm not saying you're stupid by any means but I've seen someone run 87 and didn't realize. I hate to admit it but I did a Tt swap on my Z32 and couldn't figure out why it wouldn't fire. My dumbass forgot to put fuel in it. Good luck finding your problem. I bet it something simple.

Aaronbradley1234 · 04-15-2013, 10:15 PM

Bad or corroded KS?

*fliprayzin240sx* · 04-16-2013, 08:35 PM

Quote:

Originally Posted by s2kguy17

Hard to tell from this angle/pix but it looks like your CAS notch is lined up to the 1st divot. It should line up to the 2nd one. Basically, before you stab it, line it up to the first one, when you stab it, itll spin and line up to the 2nd divot.

codyace · 04-16-2013, 09:43 PM

Quote:

Originally Posted by fliprayzin240sx

Hard to tell from this angle/pix but it looks like your CAS notch is lined up to the 1st divot. It should line up to the 2nd one. Basically, before you stab it, line it up to the first one, when you stab it, itll spin and line up to the 2nd divot.

He's got it right...it's on the 2nd (left) divot when fully inserted.

*fliprayzin240sx* · 04-18-2013, 05:10 PM

Quote:

Originally Posted by codyace

He's got it right...it's on the 2nd (left) divot when fully inserted.

Man, its been a while, I could have sworn that shit would spin to the right, not to the left.

codyace · 04-19-2013, 09:16 PM

Well it does spin to the right, and it lines up the left mark. The upper gear goes L to R, so when you put a gear into it, it'll move that direction

03-12-2013, 07:26 PM	#1
s2kguy17 Leaky Injector Join Date: Sep 2007 Location: Land o Lakes,FL Age: 38 Posts: 111 Trader Rating: (1) Feedback Score: 1 reviews	s13 sr20det red top cas way advanced to run right Ok heres the deal if I set the cas in correct timing 15 degrees the car runs but is really laggy and breaks up as soon as I hit any boost at all. Just breaks up and falls on its face. Now if I take the cas and advance it all the way runs damn good no breaking up has power in all rpm range. I have changed out with a friends running sr20 coils packs, ignitor, maf, new isis 255 fuel pump at the fuel rail im reading 40psi at idle. Ive swapped out full fuel rail with injectors. Im running ngk bk6 gapped at .28... Any ideas ive searched very few people have had this issue and they never reported back what was wrong if they fixed it. Over view Timing set to 15 degrees breaks up really Laggy When cas is advanced runs damn good no breaking up has power Mech timing is tits I can post pictures if need be No boost leaks 10psi isis t25/28 New 255 fuel pump Swapped out fpr Bkre6 gapped at .28 Coil packs seem to be ok no cracks but will test them with a volt meter swapped maf Swapped ignitor New nissan coolant temp sensor Tps is set 45 closed Keeps fowling out spark plugs I think my air to fuel wideband sesnor is taking a shit I need to test it In boost while breaking up reads low 12s and higher Any ideas??

03-13-2013, 10:10 PM	#7
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 39 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Did you verify cam timing/mechanical timing was correct? Restabbed the CAS at TDC correctly too? __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

04-19-2013, 09:16 PM	#15
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 39 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	Well it does spin to the right, and it lines up the left mark. The upper gear goes L to R, so when you put a gear into it, it'll move that direction __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

03-12-2013, 07:32 PM	#2
OrangeVirus1 BANNED Join Date: Jan 2013 Location: PyongYang DPRK-N. Korea, Province 2 Posts: 1,236 Trader Rating: (0) Feedback Score: 0 reviews	you are running lean if it runs well advanced, run it advanced as long as it isn't knocking

03-12-2013, 07:41 PM	#3
s2kguy17 Leaky Injector Join Date: Sep 2007 Location: Land o Lakes,FL Age: 38 Posts: 111 Trader Rating: (1) Feedback Score: 1 reviews	Ok how do I fix it from running lean then. I only have maybe 5 miles on this build trying not to blow it like I did the one right before this.

03-12-2013, 08:09 PM	#4
OrangeVirus1 BANNED Join Date: Jan 2013 Location: PyongYang DPRK-N. Korea, Province 2 Posts: 1,236 Trader Rating: (0) Feedback Score: 0 reviews	check your injectors clean them.

03-12-2013, 08:16 PM	#5
s2kguy17 Leaky Injector Join Date: Sep 2007 Location: Land o Lakes,FL Age: 38 Posts: 111 Trader Rating: (1) Feedback Score: 1 reviews	I have 8 of them now ive swapped them. And I bought a new engine harness from a prefect running sr and still doesnt seem right

03-13-2013, 09:25 PM	#6
s2kguy17 Leaky Injector Join Date: Sep 2007 Location: Land o Lakes,FL Age: 38 Posts: 111 Trader Rating: (1) Feedback Score: 1 reviews	Any other ideas. Im pretty much stumped

03-15-2013, 01:16 PM	#8
s2kguy17 Leaky Injector Join Date: Sep 2007 Location: Land o Lakes,FL Age: 38 Posts: 111 Trader Rating: (1) Feedback Score: 1 reviews

04-15-2013, 09:32 PM	#9
carnagexxxx Zilvia Member Join Date: Sep 2006 Location: weirdoville Age: 42 Posts: 244 Trader Rating: (-1) Feedback Score: -1 reviews	I would bet that it's your plugs not either being the right ones or they are gapped wrong. When gapping the plug, you should just BARELY be able to feel any metal touching at the desired gap on the plug gapping tool. If you are having any trouble pulling the desired size through, it's too tight. Also, I have found that they have changed the NGK part number. I can't remember where I saw it on here but you can search around. The only other thing I would tell you to check is the grounds. There should be a big fat ground from the fender to the intake and there should also be a ground on the back of the motor. Make sure that the metal is clean and bright. Make sure that the battery is tight and giving at least 12.4V to the coils.

04-15-2013, 10:10 PM	#10
Aaronbradley1234 Leaky Injector Join Date: Apr 2013 Location: Jackson, Ms Age: 35 Posts: 116 Trader Rating: (0) Feedback Score: 0 reviews	Dirty maf? Boost leak? I know this sounds dumb but what octane are you running? I'm not saying you're stupid by any means but I've seen someone run 87 and didn't realize. I hate to admit it but I did a Tt swap on my Z32 and couldn't figure out why it wouldn't fire. My dumbass forgot to put fuel in it. Good luck finding your problem. I bet it something simple.

04-15-2013, 10:15 PM	#11
Aaronbradley1234 Leaky Injector Join Date: Apr 2013 Location: Jackson, Ms Age: 35 Posts: 116 Trader Rating: (0) Feedback Score: 0 reviews	Bad or corroded KS?