sr20det timing - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

drft911 · 11-02-2007, 02:51 AM

what can cause my timing to be way off the mark?i checked the timing and it was beyond 20deg the marks werent close to the needle....i think it can be a bad knock sensor...when i try to adjust it to 15deg i have to move the cas all the way counterclockwise and when i do that the ehxaust smell like gas....

HellonFire · 11-02-2007, 02:56 AM

Your mechanical timing is off.

Tyler

drft911 · 11-02-2007, 05:27 PM

you mean cas? is bad?or what?

drft911 · 11-02-2007, 11:27 PM

ok i checked the timing again and this time from the entire #1 coil pack harness and was at 15deg.....but i still dont get why it was way off the i check it from the black wire in back of the valve cover?someone?

SamuraiSam · 11-02-2007, 11:42 PM

Sometimes when you use the wire at the back of the motor, if you have the pickup flipped the wrong way, you will get a wildly inaccurate timing reading. Try flipping the pickup around the wire and see if the reading goes crazy again. Whichever value is lower is the correct one (IIRC)

makulit054 · 11-03-2007, 11:49 AM

The only way I got an accurate reading for timing was to use an old spark plug wire. That is the best way to do it. If you don't you can get erroneous readings.

Z U L8R · 11-03-2007, 08:58 PM

gj on setting ignition base timing =]

11-02-2007, 11:42 PM	#5
SamuraiSam Join Date: Apr 2006 Location: Anacortes, WA Age: 38 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	Sometimes when you use the wire at the back of the motor, if you have the pickup flipped the wrong way, you will get a wildly inaccurate timing reading. Try flipping the pickup around the wire and see if the reading goes crazy again. Whichever value is lower is the correct one (IIRC) __________________ Amateur snowboarder, music buff, bedroom documentarian, closet Nissan fanboy, apprentice mechanic, certified Honda nut, EFI 101 attendee/graduate "You are going to work all your life to become an overnight success." -Warren Miller

11-03-2007, 08:58 PM	#7
Z U L8R Zilvia FREAK! Join Date: Jan 2007 Location: Georgia Age: 43 Posts: 1,194 Trader Rating: (0) Feedback Score: 0 reviews	gj on setting ignition base timing =] __________________ RB25 280z GT30/76R 441hp/381tq 11.9@125

11-02-2007, 02:51 AM	#1
drft911 Join Date: Mar 2005 Location: Oxnard,Cali Age: 38 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	sr20det timing what can cause my timing to be way off the mark?i checked the timing and it was beyond 20deg the marks werent close to the needle....i think it can be a bad knock sensor...when i try to adjust it to 15deg i have to move the cas all the way counterclockwise and when i do that the ehxaust smell like gas....

11-02-2007, 02:56 AM	#2
HellonFire Zilvia Addict Join Date: Jan 2004 Location: Georgia Age: 39 Posts: 740 Trader Rating: (1) Feedback Score: 1 reviews	Your mechanical timing is off. Tyler

11-02-2007, 05:27 PM	#3
drft911 Join Date: Mar 2005 Location: Oxnard,Cali Age: 38 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	you mean cas? is bad?or what?

11-02-2007, 11:27 PM	#4
drft911 Join Date: Mar 2005 Location: Oxnard,Cali Age: 38 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	ok i checked the timing again and this time from the entire #1 coil pack harness and was at 15deg.....but i still dont get why it was way off the i check it from the black wire in back of the valve cover?someone?

11-03-2007, 11:49 AM	#6
makulit054 Zilvia Member Join Date: May 2007 Location: socal Posts: 215 Trader Rating: (1) Feedback Score: 1 reviews	The only way I got an accurate reading for timing was to use an old spark plug wire. That is the best way to do it. If you don't you can get erroneous readings.