I suggest that you check the firing order of the HT leads or coil pack positions as the firing order may be 180 degrees out.
Firing order set by crankshaft sensor and camshaft sensors don't understand how it could be 180 degrees out of time
a good point . However the crank shaft positiopn sensor only tells the ECM when to fire the spark. It does not know it that spark is being fired at the right piston and that is why you have HT leads or coil packs, So if you have the timing mark on the crankshaft pointing to TDC you would expect that to spark on no 1 piston TDC . but what if you are out in the firing order and the TDC is actually firing on an exhaust stroke.. If you put the coil packs on the wrong plugs or the HT leads on the wrong plugs the cran position sensor will still the ECM to send a spark but which plug are you sending it to.
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SOURCE: starter cranks and cranks but
This sounds like the fuel pump pressure check valve is defective, that is the usual cause of this long crank time issue, I am sure if you replace the fuel pump and filter the problem will go away. If you want to verify this issue have a shop run a fuel pressure leak down test, after the key is turned off the fuel press should not drop more than 5 PSI
SOURCE: 96 toyota 4 runner won't start
Check the fuel pressure. A slight dip in pressure will keep the engine from starting. When is the last time you did a tune up? Even if you are getting some spark you might not have enough. New plugs, wires, distr. cap could solve this problem. Or try a new fuel filter. When diagnosing a car problem always do simple cheap things first, as this usually ends up being the cause.
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