rusty360 Posted December 30, 2022 Share Posted December 30, 2022 Hi guys, we are having issues with this engine running hot. It's a 6 cylinder Cummins. One thing we are wondering can we close off the line with the valve in it? It seems to me that this line could bypass quite a lot of water and miss the rad. What's the ideal running temp range for a diesel engine. It's on a larger harvester and drives 5 hydraulic pumps. Quote Link to comment Share on other sites More sharing options...
Valiant Posted December 30, 2022 Share Posted December 30, 2022 Is the radiator core clean? In my experience the most common cause of overheating with heavy diesel engines is a blocked core from dirt getting blown into it by the fan. have you given it a thorough clean out with compressed air? Quote Link to comment Share on other sites More sharing options...
Taistorm Posted December 31, 2022 Share Posted December 31, 2022 Yeah first thing to look at is blocked fins on the radiator. Unsure what that hose is for/goes to though. Running coolant temp is probably around 90deg. Is it only running hot when loaded up or even at idle? Quote Link to comment Share on other sites More sharing options...
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