Question about 1993 Toyota 4Runner

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My 93 hilux surf turbo diesel has started to run a bit rough, not too bad but i have noticed it, i recently had the glow plugs and cold start relay done, but this has had no effect. also uses more fuel. any ideas

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How do you change the fuel filter?

Posted on May 19, 2010

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You may want to add some diesel fuel conditioner.

This is most likely from dirty injector nozzles.

You could also try some automatic transmission fluid in your fuel (about 1/4 quart or so)

That sometimes works.

It may also help if you change your fuel filter regularly.

You may also want to do a compression test on your engine to make sure your engine is in good shape.

There are lots of variables, but I would try injector cleaner first.

Tim

Posted on Apr 16, 2009

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