Spending most of my life thus far in the SF bay area where there is a large population of german cars, and I can't tell you how many bosch equipped vehicles I saw getting towed because the fuel pump failed. I knew 2 people that had their pump fail in their German car's.

Just because its German and goes on cars that are marketed as "high end" does guarantee they wont fail. Hell, all of those pumps I saw had a "Made in CZ" sticker on it!!!



This is good info for all you guys running those pumps, might want to keep tabs on the PSI output...

i like how he mentioned porsches...like they never have any problems...hello oil leaks.



kevin.

LOL. reminds me of my last job. This guy always parked his 911 in the same spot everyday. And boy was it obvious. It looked like a baby valdez ran aground....

I can also tell you that a friend of mine who owns a repair shop specializing in BMW,MB,etc... replaces a fuel pump just about every week on BMWs.

I don't really care if its a bosch pump or any other pump, fuel pumps go bad eventually. Thats why its always smart to have a fuel pressure gauge whenever you're running these higher flow pumps or pushing higher horsepower.

anything that moves eventually wears out, regardless if it was made by germans, japanese, chinese, americans, canadians, doesn't matter. Everything has a life cycle. So called high performance designs push this boundary more... if it ouputs/flows higher you had to scrafice something to get that. In this case it appears to be life cycle.

right but



a) it seems to be short

and b) it doesnt seem to fail like everyother pump.



for the record my dad has 2 gas mercedes, and every fuel pump on both cars has been changed

Had Bosch pumps on mutiple cars of my own, stock and upgraded, RX-7's in town with 12K miles on at least two. No issues. I would insure your wiring and voltage is going through something other than stock wiring when in an RX-7. Helps having a pre-filter too. Law of large numbers says that your experience may be accurate for any fuel pump, but not enough for a pattern for a specific make/model. Good luck with the new setup.

This reminds me of the lady who needed repair work on her car. Her response was "But... it's a TOYOTA!"



As if the badge on the grille makes one bit of difference. Mechanical items can and do wear out, no matter who made them or what kind of vehicle they are on.



Bosch also makes fuel injectors for Ford. I suppose they never go bad, either? (I have a stack of them that says they do!)



I am curious what your measure of "the first" fuel injection system is. If you mean electronic, you may be right. But Bosch's K-Jetronic system started out life as the Rochester mechanical FI that Chevrolet introduced on certain 1957 models. When Chevrolet abandoned the system due to poor cost effectiveness, Bosch bought the rights to the unit and started tinkering. Of course, fuel injection goes beyond 1957, as many WWII tanks and aircraft had fuel injection, as well as every diesel engine ever made.



Bosch makes good stuff, but good does not mean you can install it and forget about it. Every Bosch pump I've seen installed in a vehicle has been extraordinarily overkill for the job. I would not doubt if they did that deliberately to make the pumps seem to last longer, given that they would still have enough output for proper engine operation if it was at even 50% of original capacity. When you're pushing the limits of capacity, even a few percent can hurt.



Since in this instance the pump could not even provide 10psi, I wonder if the safety blowoff was lodged open by debris. Only a scope on the pump wires could tell you for sure, even if it was just for academic reasons.

d jet is 1967 i think?