I changed the spark plugs but still the same.
1st things first, clean your throttle body. Also, that smell is concerning, have a muffler shop do a back pressure test on the Catalytic converter.
SOURCE: where are the spark plugs on my 2003 chevy
on the both sides of the engine they probably have coils sitting on top of them instead of plug wires
SOURCE: my 2003 chevy venture idles rough when i starts
"trick" spark plugs are just that. You can only make one spark at a time so therefore regardless of the number of contacts, that's all you get...one spark. Put the right ones back in and make sure you have the right wires on the right plugs.Also make sure you didn't disconnect any vacuum hoses while you were working!
SOURCE: 1996 chevy c1500 w/rotten egg smell,loss of power,rough idle
Your catalytic converter is plugged up,
If you check the exhaust output at the tailpipe you will find it restricted.
Let me know if I can assist further.
Lone99star
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jason_77a19afa8d604dee
SOURCE: I own a 2002 Chevy Trailblazer with 4200 vortec
Do you know if the plugs were changed, a bad or broken plug will also cause rough idle and slow acceleration?
SOURCE: changing spark plugs in 2003 chevy trailblazer
CHANGING SPARK PLUGS IN TRAIL BLAZER. YOU NEED TO REMOVE AIR INTAKE RESONATOR AND IGNITION COILS.YOU NEED LONG 3/8 EXTENSION - SPARK PLUG SOCKET - 3/8 RATCHET WRENCH. NEED SPARK PLUG GAUGE AND A TORQUE WRENCH.YOU CAN GET BY WITH OUT ONE LONG AS YOU DONT OVER TIGHTEN PLUGS AND STRIP OUT ALUMINUM THREADS.
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All set, I had it put on the machine to check it out , it was the #2 coil pack. runs beautiful again. Thank you for your help.
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