Renault Master Poor Starting Fuel Consumption

Hi, I'm having trouble with my 2007 Renault Master diesel. It's got about 124,409 km on it. Lately, it's been starting poorly, and the fuel consumption seems way higher than usual. Plus, the engine power feels noticeably reduced, and the idling is all over the place – sometimes it even stalls! Could a defective injection nozzle cause all of these issues at once? I'm thinking it might be a dirty injection valve. Anyone experienced something similar?

4 comment(s)

I had similar symptoms with my Master. Hard starts, poor idling... Does it almost sound like a misfire? Have you checked the injectors? That was the culprit for me.

Interesting! So, you think it's highly likely the injection nozzle? Did you end up replacing it or just cleaning it? And did it solve all the problems, like the high fuel consumption and reduced engine performance? I'm trying to avoid going to a mechanic if I can fix it myself, but I also don't want to mess things up even more.

In my case, replacement was necessary. Cleaning didn't solve the issue long-term. Given the symptoms you described, especially the stalling, a defective injector is probable. While DIY is admirable, fuel injection systems are complex. I would advise seeking professional diagnosis and repair to avoid potential engine damage.

Thanks a lot for the advice! I suspected it might be more than just a cleaning job. I think I will take it to a workshop to get it checked. Apparently, the repair set me back 515€. I'll get the injection nozzles replaced. Hopefully, that will solve all the problems. Thanks again for your help!

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