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Isuzu D-Max: Engine making noise

Upon your advice last year I had an expert look at the noise in my Isuzu D-max. He said it was a camshaft chain/oil pressure related noise. Isuzu has replaced the camshaft chain tensioner, and also filled the engine with lighter grade oil, but without having any effect. It appears that the oil is draining out of the overhead oil filter, and each time you start the motor it has to refill and takes about 3 to 6 seconds for the noise and oil light to go out. Is this a common problem? Will it cause damage? Is it repairable? Isuzu has told me it's not a problem and to live with it, but this is not a slight engine clatter it's a major rattle that is getting louder and longer. Any advise on what to do next?

We haven't had any other reports on the D-Max, but we have had reports on other makes. Toyota had lots of issues with diesels, which was related to the fuel-injectors. The first one I heard I thought had the death rattles. I wouldn't have believed it was related to the fuel-injectors, but replacing them fixed this car, at least for a time. I would go back to Isuzu and tell them you're not happy and want your car fixed.

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