86 560sel Mercedes-Benz

Asked by Aug 10, 2016 at 11:13 AM about the 1986 Mercedes-Benz 560-Class 560SEL Sedan

Question type: Maintenance & Repair

How can i bypass 1 bad fuel pump and use the
other fuel pump basiclly on use 1pump on my 86
benz 560sel

3 Answers

55,435

Wouldn't you think there is a good reason that there are 2 pumps on this vehicle? I would think it would not work well. Perhaps replace or repair the defective pump?

Ok you told me something i already know but you can use 1 pump to get by temporarily and you cannot repair a fuel pump that separates from itself the cap that sits inside the barrel of the pump cameout it was a defective part i will not order another pump online again.

55,435

If the pump is an inline pump you could bypass it by removing the pump and plumbing in sufficient fuel line to go around it, but the line would need to be of sufficient type to contain the pressure of the other pump. If it is in the fuel tank I am not sure how you would do that. Pretty sure you are familiar with all this. The other option would be join a vehicle specific forum and ask the question you asked here. Best of luck with it sir!

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