philippscholz59

4Runner Diesel Engine Issues

Having issues with my 2002 Toyota 4Runner diesel. It's hard to start, fuel consumption is up, engine power is down, idles rough, and sometimes stalls. It has 169839 km mileage. Could a bad injector nozzle cause this?

A 2002 Toyota 4Runner diesel is experiencing hard starting, increased fuel consumption, reduced engine power, rough idling, and occasional stalling. These issues could be caused by a defective or dirty injector nozzle. A workshop confirmed the injector nozzle was indeed the problem, leading to its repair.

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4 comment(s)

Hey, I had similar symptoms with my 4Runner, but mine is gasoline. Misfire, emissions light on, rough idle… Sound familiar? Have you checked for any error codes? If it's a dirty injector, that could cause all sorts of problems. Is it running lean by any chance?

Thanks for the quick reply. Yeah, those symptoms sound familiar. I haven't checked for error codes yet. How can I tell if the engine is running lean?

Well, I'm no expert, but usually a lean condition will throw a code and the emissions light will be on. But the hesitation and rough running are classic signs. Honestly, with those symptoms, especially the stalling, I'd get it checked out by a workshop before it causes more damage. It could also be something else entirely, like fuel pump or even a vacuum leak. Don't want to risk it.

Thanks for the advice. I took it to a workshop and they confirmed the injection nozzle was defective, probably from being dirty. Repair cost was 515€. Appreciate the help figuring it out.

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TOYOTA

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4RUNNER