I have a new to me '86 ProV 150 that some time in the past the oil injection was disabled. All the original parts are there. The oil line from the main tank was cut and inlet to the pump was plugged.
The oil feed from the under deck tank was also cut just before the connector at the engine housing. The pump under the deck tank still runs, I expect continuously till I unplugged the wires.
From what I have learned, and correct me if I am wrong, people were disabling this system due to oil bleeding into the lower carbs during storage causing smoky starts.
The cure for looks to be the oil pump conversion to the late style pump and incorporation of check valves inline the injection hoses.
Now where my question lye's, will just the installation of the check valves be enough to cure the problem or is there an issue with the early pump making the upgrade to the later style pump of great value?
What is the actual difference between the pump for the 150/175 and the 200hp pump?
Is there a later pump that is a direct bolt on for the pre 1990 engines or did the casting of the main case change with the pump change and the adapter and longer shaft are needed?
The oil feed from the under deck tank was also cut just before the connector at the engine housing. The pump under the deck tank still runs, I expect continuously till I unplugged the wires.
From what I have learned, and correct me if I am wrong, people were disabling this system due to oil bleeding into the lower carbs during storage causing smoky starts.
The cure for looks to be the oil pump conversion to the late style pump and incorporation of check valves inline the injection hoses.
Now where my question lye's, will just the installation of the check valves be enough to cure the problem or is there an issue with the early pump making the upgrade to the later style pump of great value?
What is the actual difference between the pump for the 150/175 and the 200hp pump?
Is there a later pump that is a direct bolt on for the pre 1990 engines or did the casting of the main case change with the pump change and the adapter and longer shaft are needed?