Rough Idle/Misfire 98 GMC 2.2

I have a 98 Sonoma 2.2 with a runs rough problem, things I have changed are injectors, plugs, wires, coils. Now I am getting a hesitation on exceleration and a bad fuel smell out of the exhaust.

Could be a stopped up cat, O2 sensors, or maybe your EGR valve need cleaning. Is your check engine light on? You may could see if you get a code from a computer scan.

Gonna do another fuel filter tomorrow night, the daughter likes to drive it with the fuel light on. I did notice that at around 45 mph is when you start to lose rpm and power.

Just an update, when the injector failed (in the open position) it dumped fuel into the cylinder. so when I checked the oil today it was half way up the neck. Did an oil change and new fuel filter and can now drive over 45mph, still has a slight miss but am thinking plugs AGAIN.....


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