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Diesel Ad Rollngo Caddy
Engine power LOW

Cause

Correction

Engine overloaded

Check for added loading from malfunctioning accessories or driven units, brakes dragging and other changes in vehicle loading

Fuel control lever mis-adjusted

Check/correct for stop-to-stop travel

Mechanical shutoff lever partially engaged

Check/replace shutoff lever in run position

Fuel quality poor of diesel fuel grade No. 1 used above 32 deg. F

Verify be operating the engine from a temporary tank of NO. 2 diesel fuel

Slow Throttle response, Air fuel tube leaking, Wastegate Diaphram ruptured, Wastegate plumbing damaged

Tighten the fittings, repair plumbing or repair wastegate diaphragm

High pressure fuel leak

Inspect the high pressure lines, fittings, or delivery valve seals for leaks and repair if necessary

Fuel supply inadequate

Check the flow through the filter to locate the source of the restriction

Air in the fuel system

Bleed the fuel system and check for suction leaks

Fuel transfer pump malfunctioning

Check/replace the fuel transfer pump

Malfunctioning fuel return overflow valve

Check/replace the return overflow valve

Oil level incorrect

Check the oil level and correct

Intake air inadequate or overheated

Inspect/replace the air cleaner element and look for restrictions. * If the vehicle is equipped with a valve to switch the intake source from under the hood to outside, position the valve for the season. * Coolant passages plugged in the aftercooler.* Check the charge air cooler for internal restriction. Replace the restricted cooler. * Check and clean the debris from the front of the change oil cooler.

Air leak between the turbocharger and the intake manifold

Check for leaks in the air crossover tube, charge air cooler connections, hoses, or through holes in the manifold cover and repair or replace

Exhaust restriction

Check for any exhaust restriction and repair

Fuel temperature high (greater than 160 F)

Fill the fuel tank. Verify the fuel heater is off during warm weather. Check for a restricted fuel drain line.

Exhaust leak at the manifold of turbocharger

Check and correct any leaks in the exhaust manifold or turbocharger gaskets. Look for a cracked exhaust manifold.

Fuel injection pump timing is incorrect

Check and time the fuel injection pump

Turbocharger worn or malfunctioning

Check for the specified boost pressure. Refer to the turbocharger boost pressure specification. Inspect the turbocharger and replace it necessary.

Valves incorrectly adjusted (valves are not sealing)

Check and adjust the valves

Extra injector sealing washer installed under injector. This is only applicable to recent overhaul with injectors replaced.

Remove the extra injector sealing washer

Injectors worn or malfunctioning

Check the injectors and replace any malfunctioning injectors

Engine compression is low

Perform the compression check to identify the malfunction. Correct as required

Fuel injection pump is malfunctioning

Remove the fuel injection pump and repair or replace as necessary.