Will a faulty EGR valve cause the engine not to start?

Answer 1

Sounds like a good question. Usually not. The EGR has a pipe coming to it from the exhaust. If the pipe is faulty, you will hear a exhaust leak. There could also be a small tube from that same pipe going to the MAP ( master air pressure ) depends what type of car and engine. (Your question does not specify model, year, engine ). The EGR if faulty or blocked, which does happen will cause your engine to run rough, or possibly stall. Did you check for spark coming from the spark plug wires to the plugs. Take off 1 wire from the spark plug, insert a screw driver in the wire, have someone crank the engine, move the screw drive very close to a metal part of the engine, is there a spark? If no, then check your ignition. I will assume that u r talking about a 2.3L tempo/topaz. If no spark, could be the ignition module, which is screwed onto the distributor, which you have to remove to change. This happened quite often with these models. Check the rotor, and cap also. If u have spark, then check for fuel. When u r in the car, and turn the ign. switch just on, do u hear a hum from the gas tank? You could also have the fuel pressur checked from the injectors, or carb if a latter model. Is the timing set correctly? Did the timing chain break or slip, depends on the mileage and service history. Start with this, and you can always leave me a message on my board. I will check for your response. Once you give me more info, we can find the problem. Good luck Unlikely, Egr causes preburned fuel to be recycled through the intake manifold.A stuck open egr will cause a stalling condition after warm up.

I believe this is what I said in the first part. .........The rest of the information was for the person to locate what the problem is in a manner which they can understand.