Howdy all,
My '94 Z28 has recently started running rough when the engine is cold. Specifically, it idels fine, but it sputters and often backfires when the drive train is under load during accelearation or going uphill. Once the car is warmed up to normal operating temperatures, it runs fine. I just changed the spark plugs and EGR valve, but didn't notice any appreciable improvement. The car does have 190k miles on it, so an engine rebuild is in my future, but I'd rather hold off on that for a while if possible. Any ideas or suggestions would be much appreciated.
Thanks.
My '94 Z28 has recently started running rough when the engine is cold. Specifically, it idels fine, but it sputters and often backfires when the drive train is under load during accelearation or going uphill. Once the car is warmed up to normal operating temperatures, it runs fine. I just changed the spark plugs and EGR valve, but didn't notice any appreciable improvement. The car does have 190k miles on it, so an engine rebuild is in my future, but I'd rather hold off on that for a while if possible. Any ideas or suggestions would be much appreciated.
Thanks.
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