Do 2006 suzuki forenzas have fuel filters that need to be replaced

It could be a problem with both the alternator and also the voltage regulator too and they both will need to be replaced.

check the fuel filter, if ok there it may need a tune up.

here:

http://www.carcarekiosk.com/video/2004_Suzuki_Forenza_S_2.0L_4_Cyl./oil/change_oil_and_oil_filter
Oil Filter Change Suzuki Forenza 2004 2008 2004 Suzuki Forenza 2 0L 4 Cyl

It takes spark at the right time, fuel, and compression, to fire a cylinder.
So if you know for a fact the cylinder has spark, the other two options are fuel and compression.

The fuel filter for Forenza and Reno models is an integral component of the in-tank fuel pump assembly. Refer to the Fuel Pump Removal procedure later in this section.

2006 SUZUKI FORENZA RECALLS/DEFECTS & PROBLEMS Access the National Highway Traffic Safety database of 2006 SUZUKI FORENZA recalls and defects found on 2006 SUZUKI FORENZA automobiles. The National Highway Traffic Safety administration is authorized to order the 2006 SUZUKI FORENZA manufacturers to recall and repair vehicles or parts of motor vehicle equipment when its investigation indicates that they contain serious safety defects in their structure, or performance.
Check with your loacol suzuki for recall not sure on this part but it is a common problem
Good luck

I had a heck of a time trying to figure this out myself. Finally found a solution thanks to a helpful youtube video. Watch this and you'll be able to change the headlight in your Suzuki Forenza

Replace the fuel filter and see if that helps. You may have a failing fuel pump. I do not have enough information to advise you more.

check or replace your ship lock on your 2006 suzuki forenza.