Hopped a curb. Now engine is running rough!?! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jaymelz324 · 09-16-2012, 08:59 AM

What's up guys. The other day I hopped a curb with my s13 and all the sudden it starts running rough. I thought I had a flat but wen I pulled over my tires were fine but my car was still shaking while idling. It almost feels like I'm constantly running out of gas. So, I started my car, n starred pulling plug wires one by one. When I got to the third wire, there was no change in the idle which tells me its the third cylinder that's having issues because all the other wires being pulled caused it to run even rougher n eventually stall. I checked out the dizzy cap and rotor and the cap was fine but the rotor was worn so I replaced it.. no change. I also switched up the wires between #3 and #4 plug and wire and it still is the number 3 cylinder which tells me the plugs and wires are fine or else the problem would have moved to #4 cylinder. Any help is much appreciated thanks guys. Oh btw the car is a 90 sohc with 181k stock 5 spd.

Sent from my EVO using Tapatalk 2

future · 09-16-2012, 09:57 AM

Make sure the ingector is plugged in

Taylor008 · 09-16-2012, 05:43 PM

Have you pulled injector plugs?

jaymelz324 · 09-16-2012, 06:00 PM

I will do that tomorrow. I just don't get how hopping the curb can cause the engine to run like that

Sent from my EVO using Tapatalk 2

Lunghz · 09-16-2012, 06:18 PM

Quote:

Originally Posted by jaymelz324

I will do that tomorrow. I just don't get how hopping the curb can cause the engine to run like that

Sent from my EVO using Tapatalk 2

Ever consider the force of the impact? your car is 20+ years old, the parts aren't as tuff, as they were brand new.

Mishkin_707 · 09-16-2012, 10:49 PM

Quote:

Originally Posted by Lunghz

Ever consider the force of the impact? your car is 20+ years old, the parts aren't as tuff, as they were brand new.

This, what were you doing jumping curbs anyways?

Kingbaby · 09-17-2012, 04:01 AM

Making a YouTube video!

He can't drift this accident - YouTube

Mishkin_707 · 09-17-2012, 05:19 AM

LMAO!!!!!

Damn that crunched

rwtf · 09-17-2012, 05:51 AM

lol nice dude, very nice.

claytoncallihan · 09-17-2012, 08:25 AM

My buddy had a lil jump in his old car years back and messed up motor mounts bad enough to were you could feel the motor moving up and down, even tapping on the hood o_O. But if youve been messing with the cylinders and found something that is really strange...

Darren · 09-17-2012, 09:10 AM

i'd be surprised if you didn't bend your LCA or strut in that... but yeah, as the others said, old cars + jarring = strange problems.

Good luck, sounds like you're on the right path

jaymelz324 · 09-17-2012, 09:17 AM

I thought it might b mounts but when I disconnected cylinder three there was no change in the way it runs so yea I donno...gotta check injectors after work. I also replaced cap n rotor with no success.

Sent from my EVO using Tapatalk 2

jaymelz324 · 09-17-2012, 07:08 PM

Yea def not mounts... #3 cylinder injector was pulled and engine ran the same. Tomorrow im gonna check pulses goin to the injectors with a multimeter and if they are getting juice then that narrows it to a bad injector, right?

Sent from my EVO using Tapatalk 2

nicks13chandler · 09-18-2012, 01:07 PM

same thing happened in my miata something was rubbing the motor (rack, chassis, sub frame) something could have bent and your car feels the motors vibrations that's what happened to mine.

Posted from Zilvia.net App for Android

jaymelz324 · 09-18-2012, 01:23 PM

If it was the subframe or mounts, the engine would run rougher when I disconnected the things listed above so no its not the subframe its the engine itself. I put a multimeter to the injector harnes and was getting around 13 volts so I kno its getting a signal. Do you guys think its a bad injector? Idk what to do..

Sent from my EVO using Tapatalk 2

09-16-2012, 08:59 AM	#1
jaymelz324 Join Date: Dec 2005 Location: long island Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	Hopped a curb. Now engine is running rough!?! What's up guys. The other day I hopped a curb with my s13 and all the sudden it starts running rough. I thought I had a flat but wen I pulled over my tires were fine but my car was still shaking while idling. It almost feels like I'm constantly running out of gas. So, I started my car, n starred pulling plug wires one by one. When I got to the third wire, there was no change in the idle which tells me its the third cylinder that's having issues because all the other wires being pulled caused it to run even rougher n eventually stall. I checked out the dizzy cap and rotor and the cap was fine but the rotor was worn so I replaced it.. no change. I also switched up the wires between #3 and #4 plug and wire and it still is the number 3 cylinder which tells me the plugs and wires are fine or else the problem would have moved to #4 cylinder. Any help is much appreciated thanks guys. Oh btw the car is a 90 sohc with 181k stock 5 spd. Sent from my EVO using Tapatalk 2

09-17-2012, 05:51 AM	#9
rwtf Zilvia Addict Join Date: Jun 2011 Location: Maryville, TN Age: 32 Posts: 830 Trader Rating: (3) Feedback Score: 3 reviews	lol nice dude, very nice. __________________

09-16-2012, 05:43 PM	#3
Taylor008 Leaky Injector Join Date: Feb 2008 Location: Utah Age: 32 Posts: 135 Trader Rating: (1) Feedback Score: 1 reviews	Have you pulled injector plugs?

09-16-2012, 06:00 PM	#4
jaymelz324 Join Date: Dec 2005 Location: long island Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	I will do that tomorrow. I just don't get how hopping the curb can cause the engine to run like that Sent from my EVO using Tapatalk 2

09-17-2012, 05:19 AM	#8
Mishkin_707 Zilvia Addict Join Date: Jul 2009 Location: everywhere Age: 42 Posts: 732 Trader Rating: (1) Feedback Score: 1 reviews	LMAO!!!!! Damn that crunched

09-17-2012, 08:25 AM	#10
claytoncallihan Join Date: Sep 2012 Location: Virginia Beach, VA Age: 35 Posts: 48 Trader Rating: (1) Feedback Score: 1 reviews	My buddy had a lil jump in his old car years back and messed up motor mounts bad enough to were you could feel the motor moving up and down, even tapping on the hood o_O. But if youve been messing with the cylinders and found something that is really strange...

09-17-2012, 09:10 AM	#11
Darren Zilvia Addict Join Date: Apr 2010 Location: kelowna, bc, canada Age: 48 Posts: 680 Trader Rating: (1) Feedback Score: 1 reviews	i'd be surprised if you didn't bend your LCA or strut in that... but yeah, as the others said, old cars + jarring = strange problems. Good luck, sounds like you're on the right path

09-17-2012, 09:17 AM	#12
jaymelz324 Join Date: Dec 2005 Location: long island Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	I thought it might b mounts but when I disconnected cylinder three there was no change in the way it runs so yea I donno...gotta check injectors after work. I also replaced cap n rotor with no success. Sent from my EVO using Tapatalk 2

09-17-2012, 07:08 PM	#13
jaymelz324 Join Date: Dec 2005 Location: long island Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	Yea def not mounts... #3 cylinder injector was pulled and engine ran the same. Tomorrow im gonna check pulses goin to the injectors with a multimeter and if they are getting juice then that narrows it to a bad injector, right? Sent from my EVO using Tapatalk 2

09-18-2012, 01:07 PM	#14
nicks13chandler Join Date: Sep 2012 Location: south jersey Age: 32 Posts: 17 Trader Rating: (0) Feedback Score: 0 reviews	same thing happened in my miata something was rubbing the motor (rack, chassis, sub frame) something could have bent and your car feels the motors vibrations that's what happened to mine. Posted from Zilvia.net App for Android

09-18-2012, 01:23 PM	#15
jaymelz324 Join Date: Dec 2005 Location: long island Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	If it was the subframe or mounts, the engine would run rougher when I disconnected the things listed above so no its not the subframe its the engine itself. I put a multimeter to the injector harnes and was getting around 13 volts so I kno its getting a signal. Do you guys think its a bad injector? Idk what to do.. Sent from my EVO using Tapatalk 2