bardabe

iTrader: (5)

according to Cypher it just puts the over lap for intake and exhaust at 0* that's why the car feels so much slower. but it still revs past 2500 no problem and drives to redline

srsairbags

im trying to get nissan usa to have someone . . . preferably a ecm tech to join in on this thread . . . . waiting for a response

FastGreg

Good job

For my part; I waiting for a ECU tune... To see if it solve the issue!

BlaQ350z

iTrader: (1)

Ok guys, i think we have finally found the solution. I was talking to a Nissan tech here in Kuwait, and he had a customer that was persistent about solving the problem. The tech guy communicated with Nissan and found that by disabling the VCT until the engine reached a certain operating temp was the only way Nissan could solve this issue. I hope this gives you guys some insight on the issue and i also hope someone will try this out.

srsairbags

mine does not have VDC (enthusiast) . . . but i tried turning traction control on/off . . no change in sputter

BlaQ350z

iTrader: (1)

He was not talking about VDC, i think it was variable cam timing (VCT). It requires reprogramming your ECM. Your Nissan dealer can request this programming from Nissan Japan. I need to get more info from the technician, i will post more details once i get back from my event.

srsairbags

that was awfully stupid of mee . . .

thanks for the info . . . please keep us posted

ap2_S2Kyle

iTrader: (2)

hey srs just noticed your in plantation so am i, hope to see u around..just got my solar orange a couple weeks ago

srsairbags

sure . . see you in local meets https://my350z.com/forum/south-east-33/


regarding VCT . . ill try out Motul 300v synthetic ester 5w30 to see if that helps . . in my next oil change

BlaQ350z

iTrader: (1)

I don't think oil will help you, i tried 5w 30, 0w 40 and 20w 50 (i think, 20w 50 non synthetic is what Nissan recommends for Kuwaiti 350z ) and continues to sputter, i think the reprogramming is the only fix that Nissan can come up with.

srsairbags

well . . this guy somehow got the sputtering to fix with an ester based synthetic 5W30 oil and a larger oil pan . . initially i was also skeptical of this . . but now that you mention VCT . . i think oil is a major player as the VCT works on oil pressure in our cars (not 100% sure) . .

post #340 in this thread

https://my350z.com/forum/6840201-post340.html

BlaQ350z

iTrader: (1)

I guess you might be right, do you have any idea where we can get our hands on this oil? I wouldn't mind trying this out, sure is better than disabling VCT.

bardabe

iTrader: (5)

Motul is Easter based oil, and the OEM oil they use on 370Z and G37 as well.

however.... disable the cam phasing until warm problem solved. Easter oil wont fix it. i tried it. after a few hundred miles it comes back. just like resetting the ECU.

srsairbags

ive also heard that OEM Nissan Ester oil for G37 are pretty crappy when it comes to engine protection . . . . Motul 300v on the other hand, ive heard is pretty amazing . . . which oil did you try ?

bardabe

iTrader: (5)

both, Motul 300V has ok protection but not for extended periods of time. not worth the Money IMO.

2fasst

iTrader: (6)

Well...My 08 HR has this problem. 25K miles on the odometer.

I run Redline 5w30 ester oil.

I have the VDC fully disabled at all times using a KPierson module.

ECU has been reflashed using Uprev's Osiris.

So all these theories did not fix the problem.

Mine does is 'usually' in the morning, during the first 5-10 minutes. I also have an engine oil warmer that I have on a timer for 2 hours before I wake up, and I warm up my car for an additional 10 minutes before I drive it (via remote start).

nokimchi2

iTrader: (1)

welcome to the club

srsairbags

ok . . im having a weird hunch that as the engines keep on sputtering (even for whatever little time) at every start up, engine components are gonna get messed up . . like the spark plugs etc may be getting fouled etc . . do you guys agree ? . . . point being . . down the road . . after a few years . .we will be needing an overhaul maybe much sooner than the guys who do not sputter . . or atleast spark plug replacement etc . . has anyone seen the spark plugs for their cars that sputter ? ?

bapestah

WOOOOAHH woooahh wait before you jump on the Motul 300v. I dont know if it's coincidence or not but my sputter started occurring after I switched to motul and put my exhaust on. I'm not blaming the oil, cause i changed it and never used it again, and my car still sputters, but i'm just giving you my opinion. I had some fancy master tech from Nissan tell me that our cars literally run best with regular oil, so for extra protection i run regular synthetic every 5k. But i will forever stay away from ester oil after my experience.

srsairbags

when i bought my car 06/2010 . . it had 30k miles and was running a synthetic blend of Castrol . .sputter was mild . . . i did an oil change with Valvoline Synthetic . . sputter came out n was fully noticeable . . . ran 2 changes of mobil1 5w30 . . . sputter became slightly more imo . . ran GC 0w30 . . now the timing of sputter is much earlier after startup . . . im confused as hell . . . im getting the picture that oil is definitely related . . . i actually tryed to get Motul but couldnt find it anywhere . . . am thinking about the redline 5w30 (which is also ester based)