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Is cleaning injectors easy, or worth it? (archive)
[ Follow Ups ] [ 5-series (E28) Message Board ] [ Msg. Board FAQ ]
Posted by Stew on October 28, 2001 at 20:10:34:

My 87 535 is having problems with NOx emissions and appears to run slightly lean. All rubber induction and vacuum hoses have been replaced as well as the fuel pressure regulator. I replaced the catalytic converter and oxygen sensor and am still high on NOx. I've run about 4 bottles of TechRon through in the last year. About the only items left to inspect and/or repair are the injectors and injector O-rings.

Are these easy to remove after 170,000 miles? If I can remove them, is there a preferred method or fluid for cleaning them? For varnished carburetors, I've always soaked them in Chem-Dip (gallon can with strainer included) with good results. Is this fluid OK or will it damage them?

I can get new injectors for $50 each at BavAuto. Is it worth trying to clean them or should I just get new ones?

Any thoughts or past experience?

Thanks.


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