KA24DE won't start after changing injector and dying - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Tristan Barton · 07-24-2013, 01:09 PM

My car was running without any issues up until recently. It's a 1991 240sx SE, the issue is that I went to start it up one morning and the whole car was shaking and that was because the engine was going crazy side to side and wasn't running smooth. I checked plugs and wires and there's spark, but then I pulled the injector wires one by one till I found one that didn't affect the engine meaning there was something wrong with it. I replaced the injector and got it start but it was flooded so I had to pull the fuel pump relay to get it started. I got it running with the replacement injector and although the start up was rough it smoothed out to how it was before on all 4 cylinders. I then took it down the street and it died, and I can't get it to start again. All the plugs were fouled and wet so I think it's either too much gas or not enough spark. I tested for leaky injectors and the replacement leaked a minuscule amount once and wouldn't do it again. The o rings seemed fine and there were no visible damage.

Whatever happened to the engine happened overnight if that helps to figure out probable causes.

Thanks,

OutlawLui · 07-24-2013, 01:16 PM

Did u change the o rings on the injectors ?

also the seals around the intake Mani were the injectors plug in

hope this helps good luck

*Sometimes the o rings look good, but i believe they warp size . kind of like the ring for the fuel pump

Tristan Barton · 07-24-2013, 01:17 PM

I didn't change the o ring on the injector but I checked it for any damage or marks and it looked fine. The seals also seem fine. I only changed one injector.

Tristan Barton · 07-24-2013, 01:21 PM

Maybe I'll try replacing the o rings? The replacement injector is slightly different in design but it's supposed to be stock and it came off another dual cam KA.

zil40 · 07-17-2014, 10:51 PM

my brother just replaced number 1 injector. and now the car wont start. it has spark and ran fine before replacing it. we are getting fuel on spark plug 1 and 3 but not 2 and 4. checked timing days before injector went bad and was fine. do you guys think maybe its a bad o ring letting to much air in the mix.

07-24-2013, 01:09 PM	#1
Tristan Barton Join Date: Jan 2013 Location: Washington Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	KA24DE won't start after changing injector and dying My car was running without any issues up until recently. It's a 1991 240sx SE, the issue is that I went to start it up one morning and the whole car was shaking and that was because the engine was going crazy side to side and wasn't running smooth. I checked plugs and wires and there's spark, but then I pulled the injector wires one by one till I found one that didn't affect the engine meaning there was something wrong with it. I replaced the injector and got it start but it was flooded so I had to pull the fuel pump relay to get it started. I got it running with the replacement injector and although the start up was rough it smoothed out to how it was before on all 4 cylinders. I then took it down the street and it died, and I can't get it to start again. All the plugs were fouled and wet so I think it's either too much gas or not enough spark. I tested for leaky injectors and the replacement leaked a minuscule amount once and wouldn't do it again. The o rings seemed fine and there were no visible damage. Whatever happened to the engine happened overnight if that helps to figure out probable causes. Thanks,

07-24-2013, 01:16 PM	#2
OutlawLui Zilvia FREAK! Join Date: Apr 2011 Location: Anaheim CA Age: 35 Posts: 1,491 Trader Rating: (19) Feedback Score: 19 reviews	Did u change the o rings on the injectors ? also the seals around the intake Mani were the injectors plug in hope this helps good luck *Sometimes the o rings look good, but i believe they warp size . kind of like the ring for the fuel pump __________________ .

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07-24-2013, 01:17 PM	#3
Tristan Barton Join Date: Jan 2013 Location: Washington Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	I didn't change the o ring on the injector but I checked it for any damage or marks and it looked fine. The seals also seem fine. I only changed one injector.

07-24-2013, 01:21 PM	#4
Tristan Barton Join Date: Jan 2013 Location: Washington Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	Maybe I'll try replacing the o rings? The replacement injector is slightly different in design but it's supposed to be stock and it came off another dual cam KA.

07-17-2014, 10:51 PM	#5
zil40 Join Date: Mar 2004 Location: roseburg oregon/san diego Age: 37 Posts: 20 Trader Rating: (0) Feedback Score: 0 reviews	my brother just replaced number 1 injector. and now the car wont start. it has spark and ran fine before replacing it. we are getting fuel on spark plug 1 and 3 but not 2 and 4. checked timing days before injector went bad and was fine. do you guys think maybe its a bad o ring letting to much air in the mix.