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Is it sluggish turning over or does it turn over good and just not start?
Sorry for the delay, was having computer issues.
Is this an auto transmission? If so there is a TSB on this issue, and here it is, it will require a reprogram by the dealer to correct this.
FORENZASection Title: Engine TSB No. TS 09 10056Division: Automotive Category: TechnicalSUBJECT:HARD START WITH EXTENDED CRANKING TIMEMODEL(S):FORENZA, FORENZA WAGON, RENO (RQ420) A/T ONLYYEAR:2006CONDITION:Some automatic transmission vehicles may experience extended cranking time (greater than 2 seconds) before the engine starts after cold soak. After the first start the engine will restart and perform as designed without any MIL ON and with no recurrence of the symptom until a repeat cold soak.CAUSE:ECM software logic.CORRECTION:Reprogram the Engine Control Module (ECM) on all vehicles in dealer inventory and on all customer vehicles brought to your service department. Refer to the General TSB 05 XXXXX "ECM (ECU) Reprogramming Verification Procedure Using the Suzuki SDS Tool".