Car rough starts does not idle and only stays running when pressing the gas but even then it wants to stall out and it sometimes misfires. I changed the egr tube, due to a crack but it is still doing it.
My car has an automatic transmission.
There are many potential causes for your concern. A misfire results from ignition problems, an incorrect air/fuel ratio or loss of compression. Since you said it only stays running when you give it gas, my guess is that the air/fuel ratio is out of whack. This could be from too much air entering the engine, say from a vacuum leak, or it could be from the engine not get enough fuel, say from a faulty fuel pump. The only way to know for certain is to have a professional diagnose your vehicle firsthand. YourMechanic is an excellent option since we come to your home or office.
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