Running on 3 cylinders? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

prophecy · 01-31-2012, 01:44 PM

93 hatchback with a stock sr20det black top, feels like it's running on only 3 cylinders. Runs good, but will sputter every couple seconds. I've check the coils, sparkplugs, and injectors all seem good. Thinking maybe it's some kind of vacuum leak but anyone got any ideas?

Pro ViZIon · 01-31-2012, 02:11 PM

To confirm that it may be on 3 cylinders, while its idling pull each plug wire one at a time and see how the engine reacts. If it stumbles that's good. If it doesn't you found your bad cylinder. Otherwise I find it unlikely since it would be running horribly. Maybe its just miss timed.

alexanderig · 01-31-2012, 03:20 PM

Quote:

Originally Posted by Pro ViZIon

To confirm that it may be on 3 cylinders, while its idling pull each plug wire one at a time and see how the engine reacts. If it stumbles that's good. If it doesn't you found your bad cylinder. Otherwise I find it unlikely since it would be running horribly. Maybe its just miss timed.

this. .........

prophecy · 01-31-2012, 04:11 PM

i forgot to mention that I pulled the injector off injector 3 and it still ran the same way, at first i thought it was the number 3 coil but it wasnt so now im kinda clueless. it checked all the injectors and they worked, so i think it might be a clog or something between the injector and the coil area.

Pro ViZIon · 02-01-2012, 01:01 AM

How does the plug on #3 look?

Walperstyle · 02-01-2012, 01:09 AM

Before you go buying or modifying injectors, try swapping injector 1 with injector 3.

...then see if the problem is now in cylinder 1, or still in 3.

If the problem follows the injector, well, there you have it
If it stays in the cylinder, your problem is probably spark...

.. or something very catastrophic, lol.

01-31-2012, 01:44 PM	#1
prophecy Join Date: Jul 2010 Location: North Dakota Age: 32 Posts: 12 Trader Rating: (2) Feedback Score: 2 reviews	Running on 3 cylinders? 93 hatchback with a stock sr20det black top, feels like it's running on only 3 cylinders. Runs good, but will sputter every couple seconds. I've check the coils, sparkplugs, and injectors all seem good. Thinking maybe it's some kind of vacuum leak but anyone got any ideas?

01-31-2012, 02:11 PM	#2
Pro ViZIon Zilvia Junkie Join Date: Dec 2008 Location: Las Vegas, NV Age: 31 Posts: 415 Trader Rating: (0) Feedback Score: 0 reviews	To confirm that it may be on 3 cylinders, while its idling pull each plug wire one at a time and see how the engine reacts. If it stumbles that's good. If it doesn't you found your bad cylinder. Otherwise I find it unlikely since it would be running horribly. Maybe its just miss timed. __________________ 1990 Nissan 240SX w/KA24DE - New project 1984 Mazda RX-7 GSL-SE 13B

02-01-2012, 01:01 AM	#5
Pro ViZIon Zilvia Junkie Join Date: Dec 2008 Location: Las Vegas, NV Age: 31 Posts: 415 Trader Rating: (0) Feedback Score: 0 reviews	How does the plug on #3 look? __________________ 1990 Nissan 240SX w/KA24DE - New project 1984 Mazda RX-7 GSL-SE 13B

02-01-2012, 01:09 AM	#6
Walperstyle Nissanaholic! Join Date: Nov 2004 Location: Alberta, Red Derp Age: 40 Posts: 1,729 Trader Rating: (0) Feedback Score: 0 reviews	Before you go buying or modifying injectors, try swapping injector 1 with injector 3. ...then see if the problem is now in cylinder 1, or still in 3. If the problem follows the injector, well, there you have it If it stays in the cylinder, your problem is probably spark... .. or something very catastrophic, lol. __________________ KA-T ORG-Function over Flush

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01-31-2012, 04:11 PM	#4
prophecy Join Date: Jul 2010 Location: North Dakota Age: 32 Posts: 12 Trader Rating: (2) Feedback Score: 2 reviews	i forgot to mention that I pulled the injector off injector 3 and it still ran the same way, at first i thought it was the number 3 coil but it wasnt so now im kinda clueless. it checked all the injectors and they worked, so i think it might be a clog or something between the injector and the coil area.