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Matt
Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 20581
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I have a mitsubishi challenger 1999 2.5 turbo diesel 4d56 engine

Customer Question

I have a mitsubishi challenger 1999 2.5 turbo diesel 4d56 engine I have replaced the head gasket, it is all back to get her but will not fire up, the glow plugs are fine but no fuel gets through I have taken the hose from the fuel filter and tried to duck fuel through no luck.
any ides
steve
Submitted: 1 year ago.
Category: Car
Expert:  Matt replied 1 year ago.
Hello may have developed an air leak on the fuel supply pipe from the tank to the engine. The engine has no separate lift pump and relies on the built in one in the injection pump. If a leak has developed on the fuel suction pipe then air entering the system will air lock the pump.Try pumping up the fuel using the hand pump in the engine bay on the filterhousing, then crack off / loosen each injector pipe in turn while cranking the engine and getting an assistant to operate the primer. This will expel air from the injection side and the engine should fire up. The problem will be cured bychecking the supply pipe along its length for signs of leakage and repairing any you find.If you daub each pipe joint with heavy grease and theissue goes away then wipe the grease away one at a time to highlight the problem joint
Customer: replied 1 year ago.

Hi I have tried to suck the fuel through with the pipe connected to the filter but no joy and I cannot find a hand pump in the engine bay. Thanks

Expert:  Matt replied 1 year ago.
the pump should be built ino the filter housing and looks like a rubber 'bump' that you depress until it goes solid
Customer: replied 1 year ago.

Hi no it has a metal disc on top and a plastic nut with a small hose connection the feed and supply pipe connections are on the top

Expert:  Matt replied 1 year ago.
Hello Stephen

Pajero Fuel Filter Housing

ok the pump is the white disc at the bottom of the image , to bleed the filter hosuing you loosen the top nut ( arrowed) then undo the white disc and pump it in and out
Customer: replied 1 year ago.

Hi again my filter looks like this. I still don't see why I cannot suck fuel from the pipe attached to the fuel tank that fits on the filter any ideas.

Expert:  Matt replied 1 year ago.
Hello try removing the filler cap to see if that helps, as they are supposed to have a 1 way valve to let air in but not out

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