auto 1 April 2026 Daily Monitor (Uganda)
Rainy Season Woes: Why Your Car Struggles to Start After Heavy Downpours
Car owners in Uganda often face starting issues after rains due to moisture affecting the starter motor, ignition components, and battery terminals. Simple checks and maintenance can prevent these problems during the wet season. Source: https://www.monitor.co.ug/uganda/business/auto/why-does-my-car-take-longer-to-start-when-it-rains--5410378
Many drivers notice their vehicles take longer to start after heavy rain, requiring multiple attempts before the engine fires up. Once running, the car performs fine, but the issue recurs each rainy season.
Experts point to several culprits. The starter motor, positioned low on the engine, can suffer from water intrusion. Moisture might enter the solenoid, causing short circuits that block the ignition signal. Over time, rain corrodes wiring and terminals, increasing resistance and weakening power delivery.
Rainwater can also erode grease in the Bendix gear, preventing it from engaging the flywheel properly. Mechanics should inspect and possibly rebuild the starter to fix this.
Installing a sturdy under-ride splash shield helps protect the starter and alternator from splashes during floods or puddles.
Other issues include leaky spark plug wells where water pools, shorting high-voltage paths and causing weak sparks or misfires. Check seals on well covers, especially after driving through water.
Cracked ignition coils or worn spark plug wires let moisture in, diluting spark strength. Replacing these parts resolves the problem.
Corroded battery terminals worsen with rain mixed with road salts, leading to voltage drops. Clean terminals regularly and coat with petroleum jelly for protection.
This advice comes from automotive experts at Daily Monitor (Uganda).