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Hello, I am new to the forums, my teenage son recently purchased a 1993 4runner V6 AT 4X4, with the understanding it had been sitting a while, so it was going to need some work. The previous owner had replaced the fuel pump and had it running (albeit not well) The engine had a weird noise but we attributed it to the large hole in the exhaust. We drove about 3 miles home, it ran rough and had no power and stalled once or twice. The engine had a LOT of leaks, and had, had some mice friends visit for a little while. My son immediately got to work and replaced the following:
Spark plugs,
Spark Plug Wires,
PCV Valve,
Valve cover gaskets,
Intake Plenum gasket,
Battery,
Ignition Coil,
CSI hose (the original hose broke upon removal the 1st time we found out when trying to start it...)
EGR delete kit
Before we did anything it would start and run, just rough. Now we can't get it to start, it will crank, but won't start. It will sometimes sound like it is going to start, almost like it is running with the starter engaged, but it is obviously not running. It has spark, it has fuel as best I know it has air. We checked the timing marks, they are all lined up, we checked compression, it was ok, except #5 was lower than the rest, but I don't think this would cause a no start condition. I checked resistance on all the injectors they were all fine. We tried pulling the engine codes it showed the ignition coil, we replaced it, still nothing, Now the engine codes are just no fault found. During the process of testing we tried starter fluid, but that did absolutely nothing. We even got an additional wiring harness with a computer, we tried plugging that in still nothing. I am stumped any ideas to help get this thing started would be welcome.
squirting starter fluid into the intake plenum? it should have fired for a second off of that.
since it didn't, should probably verify that there is spark, which you probably already did, but perhaps something has changed... pull a plug wire and see if it's sparking near a grounded area.
I will check again, we pulled the plugs yesterday they definitely had a strong fuel smell. All of the timing marks were lined up, we did note that the timing looks like it is advanced about 10 degrees though. Everything makes me think it is something electrical, but I am not 100% sure where to start. All the grounds seem fine and are connected, this why I am kind of lost.
I double checked the spark plugs by removing the plugs and reattaching the plugs to the wires they all had strong spark. I know for sure now we have fuel and spark, so it my only thoughts are there is a circuit not being completed or grounded, or since my son had removed the intake plenum maybe there is an issue with the intake air somewhere, he also did do an EGR delete, so could it be something there?
09-11-2024, 08:53 AM
