Rb no start - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

180slider · 06-22-2011, 10:07 PM

ok so i have an RB20DET and it has a no start problem??? Its got spark, and when i checked fuel at filter its getting it there so the next step was pull the rail. when i did this it only squrited on like 2 or so injectors, what could be my issue here???? i mean even it is only shooting fuel from a few it should still atleast try and run but it just cranks. i need input please.
thanks

copermn · 06-22-2011, 10:48 PM

timing is all set up right?

and if fuel is only coming out of 2 of the injectors thats not good.. you need to have all 6, you could have it running on 5, but 2 won't do it.

180slider · 06-23-2011, 08:21 AM

yea timing is set up and yea im going to try and check a couple of things and see how that goes

Sileighty_85 · 06-23-2011, 08:51 AM

either Injetors are dead or your wiring is jacked up

180slider · 06-23-2011, 01:49 PM

yea well i just went out and the first 3 front plugs were getting continuity so i checked the back 3 and nothing. so i checked the front 3 again and then they werent getting it either for some reason when they just were and im not sure what kinda volts its supposed to be getting and if the car needs to be cranked when im checking for volts from the plugs??? man im kinda lost here. what do you guys think

Jtuned_andy · 06-23-2011, 02:09 PM

Unplug your injector pigtails and measure the resistance between the tabs on each injector, they should all be the same if working correctly.

The injector harness is split into halves if im not mistaken, so the front 3 injectors are on a different line from the back three. Its been awhile since i've actually messed with my harnesses so don't quote me though.

You should see 11-12 volts at each injector with a volt meter.

Who did your wiring?

180slider · 06-24-2011, 08:47 AM

ok well i checked it yesterday and im going to look at it again today but they werent getting that many volts to the it was like maybe 2 or 2 something but then iot would start falling downward. i ll get a more accurate reading and post them here today

180slider · 06-24-2011, 01:25 PM

ok so i ran volts test, and when the key is on i got 10volts then it started dropping to 0?? is that what it is suppoesed to do?? and with the with the engine cranking i got 10-11 volts is this right?? but i tested for continuinty none of the plugs have it wtf haha im not sure what is going on there and i did this with the key on key off and cranking the engine. does anyone know wtf is going on

180slider · 06-25-2011, 04:17 PM

any body?? no ideas what it could be??

Pro ViZIon · 06-27-2011, 03:23 AM

Sounds like a wiring issue. Definitely check it out. Also did you ohm test your injectors. Should read around 11 ohms.

180slider · 06-27-2011, 12:15 PM

didnt ohm test the injectors them selves but did the plugs for them. does any body have a good swap guide for this. that way i can go back and chase the wires down to see if they are connected right

Pro ViZIon · 06-27-2011, 11:00 PM

If you google "240sx rb20 swap wiring" there is a good write up on nico.

180slider · 06-28-2011, 08:10 AM

yea they are good but idk if thats what i need i think i need some thing more if you know what i mean

240sxdd · 07-01-2011, 01:39 AM

Check your cam angle sensor.

Walperstyle · 07-01-2011, 02:45 AM

why not try swapping injectors around to see if they all work? you said two fired, so swap them out with two that didn't fire, and see what happens.

180slider · 07-01-2011, 08:32 AM

well i think its a wiring problem so my friend who had about the same problem wit hhis rb is coming over this weekend to help me with some wiring if that is what it is. but thnks man i might try that if worse comes to worse

06-22-2011, 10:07 PM	#1
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	Rb no start ok so i have an RB20DET and it has a no start problem??? Its got spark, and when i checked fuel at filter its getting it there so the next step was pull the rail. when i did this it only squrited on like 2 or so injectors, what could be my issue here???? i mean even it is only shooting fuel from a few it should still atleast try and run but it just cranks. i need input please. thanks __________________

06-22-2011, 10:48 PM	#2
copermn Leaky Injector Join Date: Jul 2010 Location: Northern Illinois Age: 31 Posts: 137 Trader Rating: (3) Feedback Score: 3 reviews	timing is all set up right? and if fuel is only coming out of 2 of the injectors thats not good.. you need to have all 6, you could have it running on 5, but 2 won't do it. __________________ ........ no

06-23-2011, 08:21 AM	#3
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	yea timing is set up and yea im going to try and check a couple of things and see how that goes __________________

06-23-2011, 08:51 AM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	either Injetors are dead or your wiring is jacked up __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

06-23-2011, 01:49 PM	#5
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	yea well i just went out and the first 3 front plugs were getting continuity so i checked the back 3 and nothing. so i checked the front 3 again and then they werent getting it either for some reason when they just were and im not sure what kinda volts its supposed to be getting and if the car needs to be cranked when im checking for volts from the plugs??? man im kinda lost here. what do you guys think __________________

06-23-2011, 02:09 PM	#6
Jtuned_andy Zilvia FREAK! Join Date: Apr 2006 Location: East Coast Posts: 1,083 Trader Rating: (27) Rides Gallery: Jtuned_andy Feedback Score: 27 reviews	Unplug your injector pigtails and measure the resistance between the tabs on each injector, they should all be the same if working correctly. The injector harness is split into halves if im not mistaken, so the front 3 injectors are on a different line from the back three. Its been awhile since i've actually messed with my harnesses so don't quote me though. You should see 11-12 volts at each injector with a volt meter. Who did your wiring? __________________

06-24-2011, 08:47 AM	#7
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	ok well i checked it yesterday and im going to look at it again today but they werent getting that many volts to the it was like maybe 2 or 2 something but then iot would start falling downward. i ll get a more accurate reading and post them here today __________________

06-24-2011, 01:25 PM	#8
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	ok so i ran volts test, and when the key is on i got 10volts then it started dropping to 0?? is that what it is suppoesed to do?? and with the with the engine cranking i got 10-11 volts is this right?? but i tested for continuinty none of the plugs have it wtf haha im not sure what is going on there and i did this with the key on key off and cranking the engine. does anyone know wtf is going on __________________

06-25-2011, 04:17 PM	#9
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	any body?? no ideas what it could be?? __________________

06-27-2011, 03:23 AM	#10
Pro ViZIon Zilvia Junkie Join Date: Dec 2008 Location: Las Vegas, NV Age: 31 Posts: 415 Trader Rating: (0) Feedback Score: 0 reviews	Sounds like a wiring issue. Definitely check it out. Also did you ohm test your injectors. Should read around 11 ohms. __________________ 1990 Nissan 240SX w/KA24DE - New project 1984 Mazda RX-7 GSL-SE 13B

06-27-2011, 12:15 PM	#11
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	didnt ohm test the injectors them selves but did the plugs for them. does any body have a good swap guide for this. that way i can go back and chase the wires down to see if they are connected right __________________

06-27-2011, 11:00 PM	#12
Pro ViZIon Zilvia Junkie Join Date: Dec 2008 Location: Las Vegas, NV Age: 31 Posts: 415 Trader Rating: (0) Feedback Score: 0 reviews	If you google "240sx rb20 swap wiring" there is a good write up on nico. __________________ 1990 Nissan 240SX w/KA24DE - New project 1984 Mazda RX-7 GSL-SE 13B

06-28-2011, 08:10 AM	#13
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	yea they are good but idk if thats what i need i think i need some thing more if you know what i mean __________________

07-01-2011, 01:39 AM	#14
240sxdd Zilvia Member Join Date: Jan 2008 Location: charlotte, NC Age: 29 Posts: 253 Trader Rating: (3) Feedback Score: 3 reviews	Check your cam angle sensor. __________________ The meaning of life= 240s and Girls

07-01-2011, 02:45 AM	#15
Walperstyle Nissanaholic! Join Date: Nov 2004 Location: Alberta, Red Derp Age: 40 Posts: 1,729 Trader Rating: (0) Feedback Score: 0 reviews	why not try swapping injectors around to see if they all work? you said two fired, so swap them out with two that didn't fire, and see what happens. __________________ KA-T ORG-Function over Flush

07-01-2011, 08:32 AM	#16
180slider Zilvia Junkie Join Date: Sep 2007 Location: pa Age: 32 Posts: 307 Trader Rating: (10) Feedback Score: 10 reviews	well i think its a wiring problem so my friend who had about the same problem wit hhis rb is coming over this weekend to help me with some wiring if that is what it is. but thnks man i might try that if worse comes to worse __________________

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