Helps please. 240sx s13 ka24de won't start after 2 months storage.

[Hoonigan19]

240sx s13 ka 24de won't start after sitting for 2 months...
So I left my car to sit for 2 months during winter with a full tank of fuel with fuel stabilizer. Go to start it and it cranks , kinda want to ignite but it won't run. 1993 nissan 240sx ka24de.

Got a new fuel pump walbro.
Got sparks in all 4.
Self diagnosis reads code 55 " everything is good "
Battery is good, even try to boost with another car.
Took the old spark plugs out, they were wet , put in new spark plugs. Still doesn't go.

Anyone got any suggestions what it could be? There was 2 loose plugs that was on the harness that was running towards the injectors so I plugged them back in. Still not working. Unsure what it's for thou.

Thanks in advance.

[Hoonigan19]

Update : now I got code 34 " knock sensor "

[centralcoaster33]

You know you have 4 sparks because you used a spark testor right? You likely have air (hopefully no vacuum leaks), your pedal moves the throttle body... you've confirmed spark, so you'll need fuel. Have you tested your new pump and what were your results? Have you tested your injectors? Your plugs were wet with what? Did your new pump come before or after the failure to start issues?

Save the knock sensor code for later. It may even go away when you get the engine running normal again.

[Hoonigan19]

You know you have 4 sparks because you used a spark testor right? You likely have air (hopefully no vacuum leaks), your pedal moves the throttle body... you've confirmed spark, so you'll need fuel. Have you tested your new pump and what were your results? Have you tested your injectors? Your plugs were wet with what? Did your new pump come before or after the failure to start issues?

Save the knock sensor code for later. It may even go away when you get the engine running normal again.

I haven't tested my injectors yet. Not exactly what to do to test it. I know it's giving fuel because I saw a puddle in each cylinder . The fuel pump was put in a few months back with a walbro 255 after the oem one crapped out. The sparkplugs were wet with fuel. I'm wondering if my cylinder got flooded when I try to start it with a drained battery. Also the harness that's connect to the 3 iacv sensors was loose when I tried to do the first start up. Gonna try again after the cylinder dries out.

[Hoonigan19]

PROBLEM SOLVED!

So the ground from the battery to the tray to the manifold. The contact point on the tray was rotten. So I got another ground cable going the the chassis.
The spark plug wires was also replaced because it was loose when I push them onto the spark plugs.
Also I properly disconnected all 4 injector plugs and try to fire the car at least like 7 times to burn up the fuel that was inside each cylinder. It was flooded for sure! It definitely runs on the flooded fuel for like 2 seconds and then gives out.
After that, there was still some slight bit of fuel inside the cylinder with the burnt oil crust. So I put some quick start into my air filter box, plugged all 4 injector back in. Fired her up with a full battery charge and IT RUNS!!

It was honestly a dumb mistake that I did when I try to start her up for the first time with a drain battery, loose IACV sub harness. That was probably what caused the cylinder to get flooded with fuel after a few tries.

Anyhow, Thanks everyone for the help, definitely a lot of help here. I can finally ditch my s*** civic lol !! Have a good one!

[centralcoaster33]

Awesome news!

[PapaSmurf2k3]

Good stuff. I was going to say pull the fuel pump fuse and let it burn itself out.
Engine grounds and battery grounds. Serious business.