The diesel fuel pump is the most strategic component, pressurizing fuel up to 2500 bar and delivering it to the injectors. Issues like hard starting, stalling, or power loss are often caused by internal pump wear. At the Simsek Pompa Overhaul Center, we completely disassemble your Bosch, Delphi, Denso, and Zexel pumps. We inspect critical parts like the plunger, camshaft, and delivery valves with micrometric precision. After the overhaul, we mount your pump on the test bench and strictly adjust the "Injection Timing" and "Fuel Metering" settings to match factory catalog specifications.