Quote Originally Posted by miked View Post
good day again sir DD,

just recently, my 4d56 turbodiesel cuts out when accelerated suddenly or when revved constantly at high rpm.....ang nangyari is below empty na yung gage, kinargahan ko 2T (about 50 ml) then drive 10 km to the gas station. tried to overtake then engine suddenly cuts out. suspected it was air in the lines (due to low fuel level), but after filling up the tank still cuts out at sudden acceleration and constant high rpms about 3-5 times on our trip dito sa province. been a user of 2T months before fyi.

changed my fuel filter last october at napansin ko days after the filter change e nagjejerk ang engine when throttle is released suddenly from a high rpm but doesn't jerk if throttle is released relatively slow.

observed too that the engine feels a little sluggish.

is this a simple air entering the fuel system problem? i hope that the injection pump won't give up the ghost yet,

would a soft hose connecting the tank to the water separator-filter assembly contribute to the problem?

thanks in advance dude!!!!
Have you sorted this out? If not, the following might help...

I too experienced stalling with my Adventure (also 4D56). I started to notice that it barely reaches 100KpH on the expressways, whereas it could reach 140KpH before. Nawalan ng rekta pero may hatak pa rin naman. DD advised checking throttle cable and changing fuel filter. Cable adjustment was fine. Changed fuel filter.

It was then that I experienced stalling. Lumala ang problema. Found out later that it was something I did earlier that caused it.

Mechanic 1 thought air was getting into the lines and suggested changing the priming pump. The solution was thankfully simpler and less expensive. Mechanic 2 suspected clogged lines. We pulled down the tank and cleaned it. Strainer had some sand (?) in it. Also removed a small strainer/filter in the injection pump located in the "in" line where fuel enters the pump. It's small and made of wire mesh. Cleaned it with thinner and compressed air. After we put everything back, she was back to her old self. Parang nagdahilan lang.

Like you, I also let the fuel level get tool low - up to the point where the warning light stays on. Maybe your pump sucked up dirt and got clogged.