Still looking for anyone who would know why my 2004 Suzuki Verona quit firing after changing the plugs. Yes I used the right plugs but it will not start and won't fire..

SOURCE: misfire code on #3 cyl. 2004 Suzuki Verona

I had the same problem I disconnected the battery to reset computer when I was changing my plugs & ignition wires! hope this helps

SOURCE: 2004 Suzuki Verona

There is not a fuse for the check engine light.

SOURCE: DIAGNOSTIC CODES

Here are the possible causes for the PO171 and PO174 codes:

• Base engine mechanical problem affecting one or more cylinders
• Check for air leaks after the MAF sensor
• Check for air leaks in the Air Induction system (e.g., in the intake manifold)
• Check for air leaks in the EGR system and in its related hoses and/or valve
• Check for air leaks in the PCV system and in its related hoses and/or valve
• Fuel control sensor is out of calibration (e.g., ECT, IAT or MAP)
• Fuel delivery system supplying too little fuel during cruise or idle periods (e.g., faulty fuel pump or dirty, restricted fuel filter)
• Fuel injector (one or more) dirty or pressure regulator has failed
• HO2S has failed (it may be contaminated with fuel, silicone or water)
• Vehicle driven low on fuel or until it ran completely out of fuel

SOURCE: need to know which coil fires #2 cylinder

BUY A CHILTON BOOK FROM ANY CAR STORE.

SOURCE: we need to know how to change a valve cover gasket

There are probably 8 - 12 bolts/nuts that attach the valve cover to the cylinder head. Remove the bolts, clean the mating surface, install new gasket, and reattach the valve cover with the bolts.
You may need to remove the following spark plug wires vacuum lines air cleaner assembly oil filler cap