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Did you know that your Fiat Siena 1.3L 16V's original oil pump has critical measurements and specifications that must be maintained for optimal engine operation? In this video, we show you in detail the key dimensions you need to know about this essential part. You'll learn about the precise alignment between the pump pinions and the cover, as well as the importance of keeping the relief valve spring calibrated to the manufacturer's specifications. Avoid making the mistake of replacing the pressure regulator, as this could seriously affect the lubrication and performance of your Fiat Siena engine. Follow our expert advice to ensure that your vehicle's original oil pump continues to function optimally and prolong the life of your engine. Don't miss these crucial details! Secondary Channel: / @freddyaraque-qj7nu • Tuning your Suzuki Vitara: Secrets of ...