Parts for your 2008 Suzuki Splash-Ignition coils

2008 Suzuki Splash Ignition Coils — What They Do and When To Replace

Technical sources confirm that ignition coils are fitted to petrol versions of the 2008 Suzuki Splash. The Suzuki workshop literature for the K10B (1.0 3‑cylinder) and K12B (1.2 4‑cylinder) petrol engines specifies coil‑on‑plug ignition. Suzuki’s electronic parts catalogue and mainstream aftermarket catalogues (NGK/NTK, Bosch, Denso) list individual coil‑on‑plug units for these engines. By contrast, the 1.3 DDiS diesel Splash uses compression ignition and therefore has no spark plugs or ignition coils, as outlined in diesel system references and Suzuki service documentation.

On petrol models, the ignition coil’s job is to transform the battery’s low voltage into a high‑voltage spark at each plug. The Splash uses a coil‑on‑plug setup, putting one coil directly on each spark plug for crisp spark control and fewer high‑tension leads under the bonnet. Expect three coils on the 1.0 K10B and four on the 1.2 K12B.

There’s no hard‑and‑fast replacement interval for coils, they’re typically changed when symptoms appear or testing shows a weak or open coil. Owners often see well over 100,000 km from original coils. Regular servicing helps: fresh spark plugs at the interval in the owner’s manual (often 60,000–100,000 km depending on plug type) reduce coil workload. During a service, it’s smart to check coil boots for cracks, look for oil in plug wells from a cam cover gasket leak, and keep moisture out around the plug tubes.

Common signs a Splash coil is on the way out include:

• Rough idle, hesitation, or a noticeable misfire under load
• Hard starting and higher fuel use
• Check Engine Light with codes like P0300–P030X or P0351–P0354

If one coil fails, replacing that single unit is fine, many technicians also inspect the remaining coils and boots at the same time. Sticking with quality OEM‑equivalent coils helps avoid repeat issues. When fitting new plugs, correct gap and careful handling protect the coil and plug threads, a light smear of dielectric grease on the boot can aid future removal. If water washing under the bonnet is unavoidable, keep spray away from the plug wells.

Left unfixed, a persistent misfire can damage the catalytic converter and shorten the life of other ignition components. Prompt diagnosis with a scan tool and a basic coil resistance/insulation check usually gets a 2008 Suzuki Splash back to smooth running quickly.

Popular questions about 2008 Suzuki Splash ignition coils

Does a 2008 Suzuki Splash have ignition coils?
The petrol Splash does, using coil‑on‑plug units (three on the 1.0 K10B and four on the 1.2 K12B). The 1.3 DDiS diesel doesn’t use ignition coils at all because it’s a compression‑ignition engine.

How often should ignition coils be replaced?
There’s no fixed schedule. Many coils last well past 100,000 km. Replace a coil when there’s a misfire, a related fault code, or test results show it’s weak. Keeping the correct spark plugs in good nick helps coils last longer.

Is it OK to drive with a failing coil?
Not ideal. Driving with a misfire can hurt fuel economy, reduce power, and risk damage to the catalytic converter. It’s best to get the fault checked and the coil or spark plug sorted promptly.