I used Southwest Diesel and Electrical in Phoenix for quite a few Cummins engine injection pump rebuilds. Never had a problem. They were pricey but results mattered more to me than cost. I don't remember if I ever had a Mercedes pump rebuilt by them.

Shyte fuel and inadequate filtration are the usual culprits when it comes to injection pump failure. This ULSD we get in AZ is a killer on our older cars.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
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