Question about 1994 Mitsubishi Mighty Max

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While my truck was being repaired it was driven for quite some time with very little oil in it. Now my truck clacks constantly.

I had the oil changed and they put a cleaner in it but it still clacks very loudly. I am using higher octane gas now but the clacking is constant. They want to change the lifters in the truck. Do I have to do them all at one time or can they change only the one, or ones, which are clacking.

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If one was damaged from lack of lubrication, they probably all are excessively worn. The engine will perform better if they are all the same, so it's best to replace the entire set to keep it running smoothly. It isn't really that much extra work once you have access to the lifters compared to trying to figure out which ones are noisy. The only reason not to do this is if you are time-rich and cash-poor, and only have enough money to change a couple of lifters. If you are paying somebody to do it, new lifters are probably cheaper than the labor of sorting bad from good.

You should also check the rocker arms to make sure they are still in usable condition; excess wear at the pivot can get noisy also.

Posted on Apr 17, 2015

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Additionally check the cam for flat lobes. I always change both when there is a problem.

Posted on Apr 17, 2015

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