Tiki and her Perkins 4.236 diesel engine – Part I

When it won’t fire up here’s the drill.

Check the stop valve is in the off position and open the throttle to full.
Check the fuel supply – like have you got any?
Before we go pulling everything apart, check the belt is turning the Fuel Injector Pump (IP).
Use the electric pump to check the input to and output from the primary filter is clean and air-free by disconnecting & reconnecting each point.

Working along the fuel line, switch to manual pump and push through to the secondary filter and again check in and out is clean and air-free.
Now we’re at the IP.
Disconnect supply at entrance and check as above to ensure it is not blocked.
Bleed (loosen them open until they drip) IP at the valves  and let them run to ensure clean fuel.  This is the Low Pressure section of the IP.
Crack (same as bleeding, different name..) the injector nuts -fuel should run clean and air free.  This is from the High Pressure area of the IP.
Check the internal “spline” is turning (ie able to create the pressure) by removing the plate cover and watching as you turn the engine over.

are you still with me?  Try turn it over again and if still no good then you will need to return at another time for Part II.   Good luck and please keep us posted on the outcome!  As for us, we’re stuck at the injector nuts as no fuel is coming through.  Good news is the spline does turn.

Coast Guard are towing us into the Marina where we’ll get a professional second opinion and probably end up having the IP bench tested.  We suspect the stop valve mechanism inside the IP has failed somehow – Neil’s money is on a spring-like component..

We’ll keep you posted.

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