Hey everyone. I've tried searching and looked around multiple forums and videos and have yet to find or try anything that has solved my issue so I figured I'd finally make a thread.
I bought my '90 240sx KA24E MT back in October and it had been sitting in a Kentucky yard for about 7 years. It's no surprise I couldn't get it to start when I first got it but I've been tweaking and replacing things for a few months now with no solution.
At the moment, it cranks, sometimes fires once, and then just continues cranking. Never once has it acted like it wanted to get up and start.
So far I've replaced spark plugs, spark plug wires, injectors (they were ruined by old gas/age and wouldn't spray), distributor/cap/rotor, ignition switch, starter relay (blue box by battery), battery. I also drained all old gas and put about 6 gallons of new gas in.
I've checked the compression of the engine, all cylinders read 180 except 4th which is about 170. I get spark, the injectors all spray. I checked timing by checking distributor rotor is pointing at #1 spark plug wire terminal when 1st piston is at TDC. I tried starting it without the MAF plugged in. My ECU lights work when the key is turned. I've also cleaned all grounds in the engine bay. My fuel pump primes every time as well. Checked to make sure cam, crank, and distributor are all in sync and in the right place. Crank is at 0 degrees, key notch for cam is at 12 oclock, cam gear dimple is at 3, and distributor rotor points at #1 spark plug wire. This is correct timing if I read right.
Also since trying all this, I replaced the timing chain, tensioner, oil pump, and water pump. Checked oil pump/middle piece/distributor timing before putting it back together and crank/#1 cylinder tdc timing before turning the key after buttoning everything back up. Still not starting, doing the same exact thing.
I'm by no means a professional mechanic but I tend to do most simple jobs on my cars myself, and getting this to start has absolutely stumped me. Any advice or recommendations are greatly appreciated. Feel free to ask any questions or for clarification. Thanks!