ka24e no start - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Austin B · 03-03-2012, 01:34 PM

Please read the full post, any suggestions are appreciated...

Engine ran fine for a long time, but I'm having issues with getting my stocker running after I replaced the battery. The battery had opposite side terminal posts and I hooked it up wrong without noticing. Classic bonehead move, I know...

When I had it hooked up wrong the starter would spin, but not engage flywheel. Not realizing my mistake yet, I thought I had a starter problem, so I replaced it, still wouldn't start. Needless to say, I tried to start it a bunch of times without correcting the terminals, frying all kinds of who knows what.

So now the batter terminals are correct, starter engages the flywheel fine, and engine turns. Here is where I am at:

- I have fuel at least up to the injectors, I know this because one injector is leaking. Also, the plugs smell like fuel when I take them out. Up until this point I have ignored fuel delivery.

- ECU reeked like fried electronics, replaced it.

- 75a fuse was blown, replaced it.

- Replaced ignition coil, ignition control module.

- The ignition wires are new and show no signs of damage.

- Inspected cap and rotor, they look fine. No carbon deposits / pitting.

- I have spark at the plugs, but when tested it was weak (orange color). Could be battery low, haven't tested on a fresh charge. Still wouldn't explain no start.

- Thought the cylinders may be flooded. Removed plugs and let it sit for ~20 hours to evaporate.

Is there any way the timing could have been thrown off by hooking up the battery wrong? I assumed not, because it is all mechanically set by timing chain and rotor position.

What other reasons, besides timing, could I have spark and fuel, but no start?

Thanks
Austin

Austin B · 03-03-2012, 02:16 PM

Quick update:

New ECU is throwing code 41 - Air Temp Sensor. The sensor is brand new and was replaced before this mess. Not to mention, I would think that the sensor being out would not prevent combustion altogether, that the engine would start, but just not run optimally.

Austin B · 03-03-2012, 04:01 PM

Pulled the fuel pump fuse and turned the engine over a few times to make sure the cylinders are clear.

Sprayed some starter fluid in the manifold and it fired and died... time to troubleshoot fuel delivery now. :/

HieuHundreds · 03-17-2012, 06:21 AM

Im also having the same issue my car cranks and starts with some starter fluid but does not want to stay on she dies out in seconds. I believe Im not getting enough fuel into the engine and it may be clogged or fuel rail pressure may be off?

Let me know once you resolve this , im having a very similar issue !

tapdeznutz · 03-17-2012, 01:20 PM

i am still off and on having similar no start issue to where my engine will not start like it has no spark, put in new spark plugs and that didnt do anything, after a few attempts to start smelled like engine was flooded so what i did was removed one of the injector clips to get it going and it started right up, stumbling of course, i did have not figured out my exact problem either but it runs ok for now but still bogs, so yeah i need to know how you fixed yours too thankx

03-03-2012, 01:34 PM	#1
Austin B Join Date: Aug 2011 Location: Arizona Posts: 7 Trader Rating: (1) Feedback Score: 1 reviews	ka24e no start Please read the full post, any suggestions are appreciated... Engine ran fine for a long time, but I'm having issues with getting my stocker running after I replaced the battery. The battery had opposite side terminal posts and I hooked it up wrong without noticing. Classic bonehead move, I know... When I had it hooked up wrong the starter would spin, but not engage flywheel. Not realizing my mistake yet, I thought I had a starter problem, so I replaced it, still wouldn't start. Needless to say, I tried to start it a bunch of times without correcting the terminals, frying all kinds of who knows what. So now the batter terminals are correct, starter engages the flywheel fine, and engine turns. Here is where I am at: - I have fuel at least up to the injectors, I know this because one injector is leaking. Also, the plugs smell like fuel when I take them out. Up until this point I have ignored fuel delivery. - ECU reeked like fried electronics, replaced it. - 75a fuse was blown, replaced it. - Replaced ignition coil, ignition control module. - The ignition wires are new and show no signs of damage. - Inspected cap and rotor, they look fine. No carbon deposits / pitting. - I have spark at the plugs, but when tested it was weak (orange color). Could be battery low, haven't tested on a fresh charge. Still wouldn't explain no start. - Thought the cylinders may be flooded. Removed plugs and let it sit for ~20 hours to evaporate. Is there any way the timing could have been thrown off by hooking up the battery wrong? I assumed not, because it is all mechanically set by timing chain and rotor position. What other reasons, besides timing, could I have spark and fuel, but no start? Thanks Austin Last edited by Austin B; 03-03-2012 at 02:50 PM..

03-03-2012, 02:16 PM	#2
Austin B Join Date: Aug 2011 Location: Arizona Posts: 7 Trader Rating: (1) Feedback Score: 1 reviews	Quick update: New ECU is throwing code 41 - Air Temp Sensor. The sensor is brand new and was replaced before this mess. Not to mention, I would think that the sensor being out would not prevent combustion altogether, that the engine would start, but just not run optimally.

03-03-2012, 04:01 PM	#3
Austin B Join Date: Aug 2011 Location: Arizona Posts: 7 Trader Rating: (1) Feedback Score: 1 reviews	Pulled the fuel pump fuse and turned the engine over a few times to make sure the cylinders are clear. Sprayed some starter fluid in the manifold and it fired and died... time to troubleshoot fuel delivery now. :/

03-17-2012, 06:21 AM	#4
HieuHundreds Join Date: Feb 2012 Location: york , pennsylvania Posts: 47 Trader Rating: (0) Feedback Score: 0 reviews	Im also having the same issue my car cranks and starts with some starter fluid but does not want to stay on she dies out in seconds. I believe Im not getting enough fuel into the engine and it may be clogged or fuel rail pressure may be off? Let me know once you resolve this , im having a very similar issue !

03-17-2012, 01:20 PM	#5
tapdeznutz Nissanaholic! Join Date: May 2011 Location: Long Beach Age: 45 Posts: 1,801 Trader Rating: (50) Feedback Score: 50 reviews	i am still off and on having similar no start issue to where my engine will not start like it has no spark, put in new spark plugs and that didnt do anything, after a few attempts to start smelled like engine was flooded so what i did was removed one of the injector clips to get it going and it started right up, stumbling of course, i did have not figured out my exact problem either but it runs ok for now but still bogs, so yeah i need to know how you fixed yours too thankx