I have a 93 nissan 240sx with the KA24DE engine. I have been getting vapor lock after running the car for a little while and parking it. When I get in the car it will turn over for about a second then stall out. I know it is vapor lock because I will separate the fuel line from the fuel rail, and get nothing but air and a little bit of fuel coming out, What are some of the common issues that cause vapor lock? Keep in mind that I have taken the tank out and completely cleaned it out to try to fix it. I also just replace the filter and one of the hoses. All help would be appreciated.

check for vacuum hose leaks the small rubber hoses.

You will need to flush the steering system and then replace the steering rack and pinion assembly to cure this issue.

ok the nissan altima has the same engine as any nissan 240sx from 92+

its a ka24de engine 2.4liter dual over head cam so if they cant find anything under the altima tell em to check a nissan 240sx of the same year.

as far as the car dieing it could be a few things idle air control valve clogged pcv valve wich is stupid hard to replace i have a 95 altima your almost better off pulling out the entire engine. and other things sorry. I cant assist with your main problem but thought id drop some advice.

if the light went out on it's own ,,,yes it should now pass inspection

idle air control valve or ur purge valve

hi, i did a head on a nissan and had similar problems , what i had missed was one ground wire that i tucked neatly out of the way by the firewall, must have been a very important ground .. hope this is your fix

valve tick is completely normal on a KA24DE. if you dont, start running a full synthetic oil. KA's are bullet proof, the motor will last 300k with no real problems...valve tick is nothing. I own 2 nissan 240sx, they have the same motor as your truck. i have a good amount of experience with them. hope that helps

1997 Nissan 240SX SE Coupe 2.4 liter DOHC L4 (KA24DE)




Good luck, and remember rated this.

well first visually inspect the vacuum lines. any rubber hosee under the hood. looking for cracks holes inspect completley. if the hoses look good . next check the pcv valve . let me know if you dont know how to check a pcv valve. if it isnt these things it is probably a sensor and you shold get a diagnostics scan.

My Nissan Primera EGT (1993 Reg'd) has an immobiliser, which was causing a similar problem. Turned on ignition and nothing. The immobilizer was faulty to the starter motor, so we disconnected it from the starter and left the immobilizer on the fuel line. Starts now, no problem and the immobilizer would still stop the potential thieves as they'd have no idea without the immobilizer key why the engine will no more than start then stutter to a big full stop!!.
The 240SX is probably a more modern Nissan but I bet there's an immobilizer built into it somewhere. You may need to take it to a Nissan expert or Dealer to check out. It's almost definitely something weird like an immobilizer or maybe the starter motor's blown it, but then you'd have heard the graunching noises that starter motors make when they're about to clap out, they don't usually just go. There may also be some disconnection of wires to the alternator, which amplifies the spark to the engine, but the starter motor would still turn, your engine just wouldn't fire up with the too weak spark. So if nothing moves, it's most likely an immobilizer or possibly (but unlikely) a sudden death starter motor.