Cold weather can be tough on diesel engines, especially on critical components like Cummins fuel pump parts. Low temperatures cause fuel to thicken, metal parts to contract, and seals to harden, leading to potential failures. Understanding these effects and taking preventive measures can help avoid costly repairs and keep your engine running smoothly in winter. Effects of Cold Weather on...

The Cummins STC oil control valve (3071599) plays a vital role in maintaining proper fuel injection timing. When it fails, engine performance suffers. In this guide, we’ll walk through testing and replacing the STC oil control valve to restore optimal engine operation. Step 1: Verify the Symptoms Before replacing the valve, confirm it’s the root cause. Common signs include:...