Question about 1988 Mitsubishi Pickup

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Information Dears I have one problems with my mitssubishi pajero. The motor make a lot of noise, I try to solve by removing injectors, I obseve that the first cylinder cause that demoge. What can I Do solve that problem? je parle cette fois en fran?ais,j'ai une mitsubishi pajero moteur 4M40, le moteur cogne j'ai essyer de d?visser les vis des injecteurs l'un apr?s l'autre il en d?cule le cognement ?mane du premier cylindre comment faire pour reduire ce probleme? J'ai tar? ? 120bars mes il cogne j'ai permut? les injecteurs mais le m?me cylindre cogne. J'attends une suite favorable. Le chois du model et ann?e e sont pas reel.

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What do you mean by the first cylinder was the cause, as in the injector was bad or that the cylinder was bad?

if it is the injector, replace it.

if it is the cylinder, the engine needs a rebuild.

Posted on Nov 26, 2008


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Check and verify the pickup low pressure fuel pump inside the fuel tank is working, it will run anytime the key is in the crank position or the engine is running, should make a low pitched whirring noise, best heard with the fuel fill cap removed and ear down to the fill tube..

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your car is direct injection the same principle as diesel engine injectors system witch is very sensitive to the amount of pressure generated from fuel pump

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2 Answers

Hard to start, 2.8 TD Pajero 1996

Excellent description of your problem, I wish more were as articulate.
I thought at first it could be a glowplug fault but if you are experiencing problems when warm and noise from crank then it possibly is related to fuel.
You are either getting too much or not enough? have you replaced your fuel filter recently? also I hope inadvertently a mix of Petrol/gasoline hasn't taken place? finally your injectors seem to me to be the root of the problem.
O'k if it were me I would change fuel filter, also during this process I would purchase a fuel system cleaner, not one you mix in the tank but one where you fill the fuel filter.
Try it if a slight improvement you may need to do it again, if sorted use a fuel conditioner/cleaner in the tank regularly to maintain fuel efficiency.
I hope the information supplied FREE! sorts your problem? press the blue button please to rate my Efforts.
Thank You!
Paul 'W' U.K.

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had same problem with my peugeot had it on computer told me injectors are fuel pump after a lot off work and money was catalic stuffed up with soot cut it off put a straight pipe on car back 2 normal check your cat?

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