Rebuilt top end of my sr20det, now won't start! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

90sr · 10-02-2004, 09:53 AM

well the cas is wat tells the ecu to tell the coils to fire, you said the plug was on wrong? if thats the case try to put it on the opposite way, also check all the teeth on it make sure nothin is chipped or ne thing cuz u dont want that messin with ur exhaust gears n wat not inside the block, see if your gettin spark, pull all the plugs out n test em 1 by one, get a volt meter and see if the cas actually has voltage, the fsm should tell u wat each prong should be, i think between prong 1 and 2 the voltage should fluctuate between 5 volts n .1volts, also have it grounded, but might need a schematic cuz its gona fluctuate really fast i dont think the volt meter can handle it, um other than that, make sure theres no bites in your harness anywhere, pull your injectors make sure your sprayin, other than that i duno lete me know how it goes, i hope this helps.

chris

VisionRx7 · 10-02-2004, 04:50 PM

Alright, I'll have to try all that. The plug is in the CAS the correct way, but I think I might have broken it since I dropped it. How fragle is the CAS? It did run at first until the plug lost contact because it wasn't clicked in all the way. After that I timed it, and thats when I found out it wouldn't start again. I don't think anything else would have gone bad by timing it, because that was teh only sensor I had to remove.
It is getting spark, but it was really weak looking.

90sr · 10-02-2004, 05:21 PM

well its really a fragile piece to your motor, might be getting bad ground, i mean are all the prongs still in good shape on the piece itself, also inspect all the teeth on it other than maybe sumtin inside the actual sensor got messed up when it fell i dunno, chekc it all out.

chris

10-02-2004, 09:53 AM	#1
90sr Zilvia Member Join Date: Dec 2003 Location: toms river, new jersey Age: 40 Posts: 200 Trader Rating: (0) Feedback Score: 0 reviews	well the cas is wat tells the ecu to tell the coils to fire, you said the plug was on wrong? if thats the case try to put it on the opposite way, also check all the teeth on it make sure nothin is chipped or ne thing cuz u dont want that messin with ur exhaust gears n wat not inside the block, see if your gettin spark, pull all the plugs out n test em 1 by one, get a volt meter and see if the cas actually has voltage, the fsm should tell u wat each prong should be, i think between prong 1 and 2 the voltage should fluctuate between 5 volts n .1volts, also have it grounded, but might need a schematic cuz its gona fluctuate really fast i dont think the volt meter can handle it, um other than that, make sure theres no bites in your harness anywhere, pull your injectors make sure your sprayin, other than that i duno lete me know how it goes, i hope this helps. chris __________________ chris's sr

10-02-2004, 04:50 PM	#2
VisionRx7 Leaky Injector Join Date: Aug 2004 Location: Pittsburgh, PA Age: 42 Posts: 78 Trader Rating: (0) Feedback Score: 0 reviews	Alright, I'll have to try all that. The plug is in the CAS the correct way, but I think I might have broken it since I dropped it. How fragle is the CAS? It did run at first until the plug lost contact because it wasn't clicked in all the way. After that I timed it, and thats when I found out it wouldn't start again. I don't think anything else would have gone bad by timing it, because that was teh only sensor I had to remove. It is getting spark, but it was really weak looking. __________________ VisionSpeedFactory.com 1993 Mazda Rx7 - 3 Rotor single turbo

10-02-2004, 05:21 PM	#3
90sr Zilvia Member Join Date: Dec 2003 Location: toms river, new jersey Age: 40 Posts: 200 Trader Rating: (0) Feedback Score: 0 reviews	well its really a fragile piece to your motor, might be getting bad ground, i mean are all the prongs still in good shape on the piece itself, also inspect all the teeth on it other than maybe sumtin inside the actual sensor got messed up when it fell i dunno, chekc it all out. chris __________________ chris's sr