There should be 2 clips on from the rotor housing to the cap, pull the clips off and lift the cap, you will want to change the rotor inside as well. do not remove the spark plug wires from the old cap yet...replace the rotor, it will only go on one way, and put new cap on, it too should only go one way. now, one at a time, pull the plug wires and put them on the new cap that is mounted. this will ensure that you have them in the right order.
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3 things needed to make a motor run...Fire ,Fuel ,Air...You said you have spark so there is the fire .so to easily check for fuel just spray some carb cleaner in the throttle body ,and see if it starts then. If so then you need to figure out why you aren't getting fuel...Air is all around us so that one is easy...Hope this helps...
drain and clean the fuel tank
clean the pickup gauze on the fuel pump
replaced the fuel filter
if its got carbs drain and clean the fuel bowls
remove the spark plugs and leads to check for moisture
clean and gap the spark plugs
remove inspect and clean the distributor cap
Sounds like it could be the ignition module in the distributor. You have a throttle body instead of a carb. The injectors get a ground signal from the engine computer when they are supposed to open. The ignition module takes a signal from the pickup coil in the bottom of the distributor and decides when to fire the plugs and also the injectors.
If the injectors and the coil has power, it could be the module or the pickup coil.
If it has spark to the plugs, normal compression, and fuel, it should start. So assuming it does have normal compression, I would want to know if it will try to start by spraying carb cleaner into the throttle body to substitute the injector spray. One of the three components is missing.
Another thing to check is the distributor cap and rotor to make sure spark is reaching all of the plugs at the right time.
May just be some dirty fuel, or clogged dirty air filter...try putting 2 bottles of fuel injector/carb cleaner in the tank to be sure dirty fuel has been treated. Did your Dynasty sit for a period of time? (Not driven or run for several months, or did you let the fuel tank get very low? Same remedy. Hope this helps..
with many new modern fuel injected vehicles its hard to give them a tune up without plugging them into a computer or getting an aftermarket computer chip and programmer.
however, if your toyota is running a little rough and getting bad gas mileage i would reccomend a new set of spark plugs and wires. and maybe a new fuel filter, i would do the spark plugs first, if the results are not satisfactory then change the spark plug wires, and if the results are still not up to your standards comparing the way it used to run to how it runs now then change the fuel filter. doing all these things will make the vehicle run clean and efficient like it should. and if it doesnt than im sure you have a vacum or oxygen sensor problem.
just wanna hop up the performance a little bit and get better fuel mileage?
then i would suggest and personally recommend a complete K&N cold air intake kit.
You say you replaced the fuel pump, what about the filter? If the filter is clogged it can cause this as can ignition. Since the car started for you after the fuel pump was changed the original problem was the fuel pump. But you should never change the pump without installing a new filter.
If your engine timing is good, (meaning the cam is timed to the crank, and distributor) and you have spark and fuel, your engine will run. Try a compression test, and back up and re-test fuel and spark. Make sure the spark works with a HEI spark tester. (Coils can go bad and give a weak spark)
Spray aerosol carb cleaner into the throttle body while an assistant tries to start the engine. If it runs for a few seconds then quits, you are not getting fuel into the engine. Check the fuses. You might have blown the fuse for the fuel injectors (possible if you removed any of the injector harnesses) or the fuel pump relay. Charlie