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Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 1231
Experience:  Technican turned service manager with multiple lines of equipment and rental units.
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Have a 1981 cat 953 I use on farm. Replaced engine about

Customer Question

Have a 1981 cat 953 I use on farm. Replaced engine about 1000 hours ago. Engine started fluttering and lacking power under load. Changed both fuel filters, did not help. Starts fine and runs smooth except under heavy loading. Suggestions.
Submitted: 5 months ago.
Category: Construction and Road Equipment
Expert:  Curtis B. replied 5 months ago.

Hello! Let's see if we can work together and come to a satisfactory conclusion!

Expert:  Curtis B. replied 5 months ago.

Restricted fuel to the injection pump. Check the fuel line and fitting at the first filter. this is where any trash/ debris from the tank will gather before it will get to the filter. blow back into the tank and physically check the fitting at he filter. I think you will find problem there.