There is two likely possible causes for this.1) You are not getting a spark.2) You are not getting fuel.To test if you have a spark it's quite simple. You unplug one of the (any one) spark plug wires from the spark plug. You then unscrew that spark plug (as if you were changing it), and remove it (so you should be able to see into the cylinder). You then hold the spark plug wire by the rubber piece and put the plug into the wire's hole. Then you just lay it down on your engine head (or wherever) and try to crank it over. If you are getting a spark the tip of that spark plug will be sparking like crazy. If there is no spark than the problem is in your ignition system. Basically you're just hooking it up as if it was in the engine, but out of the engine so you can see the spark plug tip.Usually plug, wire, and rotor failure cause break-up, not a solid shut-off. So if there is no spark, the problem is probably in your distributor's ignition coil. This is located inside the distributor, behind the rotor (small square white box). That would most likely be the problem.If you are getting a spark:Then the problem is in your fuel system. Usually a clogged fuel filter will create a slow depreciation of power and high break-up, not just kill your engine. So if it's any part of the fuel system, it's almost guaranteed 100% your fuel pump or power to it. It's most likely not an injector as your car can still function (though very poorly) on three functional cylinders.If you have any specific questions or don't understand the way I wrote something, feel free to e-mail me via the e-mail send msg in my profile. Though that should definitely be your problem.I'd check the spark first because that's what it sounds like, do the method I spoke of and see if you're getting a spark. It sounds like it's the ignition coil, but if you're getting a spark obviously that's not it. Then I'd look at your fuel pressure.PS: Assuming you have spark, before you rip out your fuel pump, check the fuel pressure. To do this they make screw in gauges for like 30 bucks. You unbolt the bolt on top of your fuel filter, and screw the gauge in (it has a threaded bolt sticking out of it). You then run the car (or try to start the car) with the vacuum line that runs from the fuel pressure regulator to the intake manifold disconnected (so the engine's vacuum doesn't throw off the fuel gauge's readings). On a '94 EX, assuming you have the stock engine (D16Z6) your fuel pressure should be in the range of 43 - 48psi, just make sure the vacuum line to the fuel pressure regulator is pulled off when you try it or else the vacuum drawn by the pistons will throw the reading horribly off.Feel free to shoot me an e-mail if you need further help.
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23 Nov 2007, 01:16 am
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