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Asian Mitsubishi Strada (crew cab pick up)with a 4M40 engine. Going up hills it severely lacks power and is eating lots of fuel. The air filter has been cleaned, but no change. There is lot a huge amount of black smoke. Any ideas of what to check?
i have the same problem with mine, but no black smoke checked for any vacum leaks,i have the same problem with mine, but no black smoke checked for any vacum leaks,
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2 posts - 1 author
Fuel pump removal 2.8 fuel pump seal replacement ( Courtesy of R.Ambrose ) Tools and stuff ... My pump number is 104741-3211 ('93 Lwb, Eng 4M40) The drive ... Very carefully undo the nut on the earth terminal by No.1 injector. ... Mark a tooth and the housing (tipex) to ensure the fuel pump is fitted back the same way.
Sep 23, 2010 - We are a domestic diesel shop in alberta canada and do not deal with ... I rechecked all timing marks several times so I pull injection pump and ...
p0420 is Catalyst System Efficiency Below Threshold (Bank 1)o2 sensors reading are used to check the catif the cat is plugged you will lose powero2 sensor send a voltage signal to the computer 0 to 1 voltsThe o2 upstream of the cat should switch back and forth from 0 to 1 volts, average .450vif voltage stays high engine is running rich (low oxygen)if voltage stays low engine is lean (lots of oxygen)cats have a 8-year 80000-mile warranty
Try changing the fuel filter. If it clogs up the engine won't get the fuel it needs to run at wide throttle openings, the engine will ****** the timing, and you'll lose power. With less throttle the filter can flow well enough for the engine to run properly.
sounds like turbo issues, i would check that first. when the turbo fails, Cold air cooler pipe slips off or leaking a leaking cold air cooler it causes low power, limited speed going up hill and the transmission to do funny things. are there any codes stored in the pcm?
You should try doing a tune up change spark plugs, wires, pcv,and fuel filter.it's reasonable to assume that the rings and valves (inside the engine) have become worn. Worn rings and valves will cause the engine to have low compression and low compression = weak power. You may be curious as to why the engine's lack of power is most evident when driving up a hill. Well, when a vehicle is going up a hill, the engine is under more stress than when driving on a flat road. Therefore, any wear in the rings/valves will tend to be revealed - in the form of compression - when the engine is under stress.
you will need to have a mechanic verify that the rings and/or valves are indeed worn. Incidentally, this generally involves what's known as a "wet compression test". If the mechanic tells you he positively confirmed a worn ring and/or worn valve condition, don't immediately authorize him to do the work. Why? Because, this type of work is very expensive and therefore you'll want to get several opinions before jumping into anything. By the way, even though this vehicle's high mileage strongly points to the above diagnosis, it's possible the cause of this problem is something else. For example, one of the electronic sensors that controls the engine may have gone bad. hope this help have a nice day.
i have the same problem with mine, but no black smoke checked for any vacum leaks,
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