Engine stumbes, runs for a few seconds when turned off - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

red240ne · 05-04-2008, 01:17 AM

I've been having a strange problem recently, and I have no clue what it is. When I turn the ignition off, the car attempts to run for a few seconds, stumbles a little, and the engine rumbles and finally shuts off, rattling the whole car....I honestly have no clue what the problem could be, and don't even know where to start with this one.\

It wouldn't bother me too much, but the engine acts REALLY harsh after I shut it off while stumbling to a stop. Also, when I try to start the car back up, it acts as if the engine is flooded, and it has trouble starting for a few seconds....

Any ideas?

I'm using an SAFC for fuel control FWIW, but I haven't made any changes to the settings recently.

The only recent mod I've done is my electric fan setup..Could this problem somehow be related to the electric fan in a weird way? that just sounds crazy...

My opinion is that the engine is still getting fuel somehow after shutoff, but I don't know what could cause that.

sillyvia13 · 05-04-2008, 01:20 AM

leaky injector?
bad inj rings?
leaky by what it can from pressure built from pump while running?

dunno...

posdrift240 · 05-06-2008, 08:21 AM

Your more than likely using cheap gas. Which is causing this problem. Or your timing is advanced too much causing it to stumble.

05-04-2008, 01:17 AM	#1
red240ne Leaky Injector Join Date: Oct 2002 Posts: 122 Trader Rating: (1) Feedback Score: 1 reviews	Engine stumbes, runs for a few seconds when turned off I've been having a strange problem recently, and I have no clue what it is. When I turn the ignition off, the car attempts to run for a few seconds, stumbles a little, and the engine rumbles and finally shuts off, rattling the whole car....I honestly have no clue what the problem could be, and don't even know where to start with this one.\ It wouldn't bother me too much, but the engine acts REALLY harsh after I shut it off while stumbling to a stop. Also, when I try to start the car back up, it acts as if the engine is flooded, and it has trouble starting for a few seconds.... Any ideas? I'm using an SAFC for fuel control FWIW, but I haven't made any changes to the settings recently. The only recent mod I've done is my electric fan setup..Could this problem somehow be related to the electric fan in a weird way? that just sounds crazy... My opinion is that the engine is still getting fuel somehow after shutoff, but I don't know what could cause that. __________________ nebraska sucks

05-06-2008, 08:21 AM	#3
posdrift240 Zilvia Member Join Date: Oct 2007 Location: Rhea Posts: 207 Trader Rating: (0) Feedback Score: 0 reviews	Your more than likely using cheap gas. Which is causing this problem. Or your timing is advanced too much causing it to stumble. __________________

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05-04-2008, 01:20 AM	#2
sillyvia13 BANNED Join Date: Jan 2006 Location: nh Posts: 1,645 Trader Rating: (1) Feedback Score: 1 reviews	leaky injector? bad inj rings? leaky by what it can from pressure built from pump while running? dunno...