Car Cranks but wont start. HELP! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

MudRacer · 11-29-2008, 11:14 AM

I dont kno what happened.

My cars been running fine for the last three years. My car is:
Blacktop SR20det. Walbro Pump. Z32 Fuel Filter. Airnix greddy intake. Stock Turbo. BKR6eix Spark Plugs (installed 2 months ago). 3 Inch Exhaust. Stock SR20 Maf. Koyo Radiator. Greddy FMIC.
Everything else on the engine is stock.

2 nights ago. I came home from work. Left the car out. Same night I parked hte car in the garage affter a few hours.

last night. I decide to pull my car out. I start it, It starts with a really rough idle, then shuts off. I thought I didnt give it enough gas. So I tried again.

This time. It wont even start. The engine keeps cranking, but theres no ignition, I dont think there are any sparks taking place. Im not sure how the process works but It wont fire up. I checked the front 2 spark plugs, they look ok. I chked the oil. It smells a lil like fuel, but i think mobil1 oil smells differently than regular oil.

I know i never tuned my car after the swap. Ive been running everything stock. I dont know what went wrong.

I tried to start it for a bit and it just keeps turning but wont ignite.

WHAT Happened to my car?!! how do i diagnose this? Has my ecu gone bad? Did the fuel relay go out? I know i can hear the fuel pump come on when i turn the key to the on position. So that cant be it. I disconnected and re-connected the igniter chip. I cant figure this out!

Help.

MudRacer · 11-29-2008, 02:49 PM

Also about 5 months ago. I had installed the battery in the trunk. I ran the positive wire from the same place as the ecu wires. Could that have caused a problem?

Addicted2Kouki · 11-29-2008, 03:19 PM

You need compression, fuel, and spark for your engine to start up.
Check to see if you have all of the above.
also check if your timing is correct.

MudRacer · 11-29-2008, 08:51 PM

Why would my timing go off by itself?

I have a feeling it has to do with spark. How do I test spark?

SLeepingPanda · 12-05-2008, 11:42 AM

Test for spark
You have fuel, cause you said you smell it.

It's possible that the cylinders is flooded with gas. No big problem, Just air it out with the spark plug out. I did that over night to guarantee all the gas evaporates.

Put the spark plugs back in, and fire it up.

Also charge the battery make sure there's enough juice in it.

What have you done to the car recently? Fuel filter change? any upgrades?

Sideways_blksr20 · 02-19-2009, 08:56 PM

i have this same problem but i fucked up because i put the jumper cables backwards some fuses from the engine bay blew up i replaced them and now the car wont turn on
i have fuel pressure
it feels like its flooded with gas cause i can smell it
if i put brake cleaner on throttle it will turn on but it feels like gas is not goin in and dies after few seconds.,please help

11-29-2008, 11:14 AM	#1
MudRacer Zilvia Addict Join Date: Aug 2005 Location: SoCali-IE Posts: 645 Trader Rating: (6) Feedback Score: 6 reviews	Car Cranks but wont start. HELP! I dont kno what happened. My cars been running fine for the last three years. My car is: Blacktop SR20det. Walbro Pump. Z32 Fuel Filter. Airnix greddy intake. Stock Turbo. BKR6eix Spark Plugs (installed 2 months ago). 3 Inch Exhaust. Stock SR20 Maf. Koyo Radiator. Greddy FMIC. Everything else on the engine is stock. 2 nights ago. I came home from work. Left the car out. Same night I parked hte car in the garage affter a few hours. last night. I decide to pull my car out. I start it, It starts with a really rough idle, then shuts off. I thought I didnt give it enough gas. So I tried again. This time. It wont even start. The engine keeps cranking, but theres no ignition, I dont think there are any sparks taking place. Im not sure how the process works but It wont fire up. I checked the front 2 spark plugs, they look ok. I chked the oil. It smells a lil like fuel, but i think mobil1 oil smells differently than regular oil. I know i never tuned my car after the swap. Ive been running everything stock. I dont know what went wrong. I tried to start it for a bit and it just keeps turning but wont ignite. WHAT Happened to my car?!! how do i diagnose this? Has my ecu gone bad? Did the fuel relay go out? I know i can hear the fuel pump come on when i turn the key to the on position. So that cant be it. I disconnected and re-connected the igniter chip. I cant figure this out! Help. __________________

11-29-2008, 02:49 PM	#2
MudRacer Zilvia Addict Join Date: Aug 2005 Location: SoCali-IE Posts: 645 Trader Rating: (6) Feedback Score: 6 reviews	Also about 5 months ago. I had installed the battery in the trunk. I ran the positive wire from the same place as the ecu wires. Could that have caused a problem? __________________

11-29-2008, 08:51 PM	#4
MudRacer Zilvia Addict Join Date: Aug 2005 Location: SoCali-IE Posts: 645 Trader Rating: (6) Feedback Score: 6 reviews	Why would my timing go off by itself? I have a feeling it has to do with spark. How do I test spark? __________________

12-05-2008, 11:42 AM	#5
SLeepingPanda Leaky Injector Join Date: Jul 2007 Location: SF California Posts: 63 Trader Rating: (0) Feedback Score: 0 reviews	Test for spark You have fuel, cause you said you smell it. It's possible that the cylinders is flooded with gas. No big problem, Just air it out with the spark plug out. I did that over night to guarantee all the gas evaporates. Put the spark plugs back in, and fire it up. Also charge the battery make sure there's enough juice in it. What have you done to the car recently? Fuel filter change? any upgrades? __________________ Simply Sophisticated...

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02-19-2009, 08:56 PM	#6
Sideways_blksr20 Nissanaholic! Join Date: Oct 2008 Location: Tustin Age: 38 Posts: 1,667 Trader Rating: (38) Feedback Score: 38 reviews	i have this same problem but i fucked up because i put the jumper cables backwards some fuses from the engine bay blew up i replaced them and now the car wont turn on i have fuel pressure it feels like its flooded with gas cause i can smell it if i put brake cleaner on throttle it will turn on but it feels like gas is not goin in and dies after few seconds.,please help