Help with cleaning the injectors.

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Doobit
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Location: West Sussex

Post Sun Apr 16, 2017 10:55 pm

I'm reading the article on the above topic in the wiki. It mentions a rear fuel line attached to the fuel rail towards the back of the engine. I've checked my M20b25 engine and the fuel line is connected to the fuel rail at the front of the engine just next to where the FPR is located.

Can someone please confirm that what I see is correct and that the wiki article is either wrong or doesn't apply to my engine (I'm assuming it's impossible that someone could have fitted my fuel rail back to front!).

Also what's the best solvent for cleaning injectors?
E30 325i Cabriolet Alpinweiß chromie
F12 640d
G11 730d
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Gavt
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Post Sun Apr 16, 2017 11:29 pm

Your set up is correct the facelift m20b25 are at the front in the fpr and a lower return line. Any sort of solvent will clean them but to do it properly injectortune do it by ultrasonic cleaning and then flow matching them with new filters and orings. And a print out of before and after.
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Doobit
E30 Zone Newbie
E30 Zone Newbie
Posts: 146
Joined: Tue Apr 05, 2016 11:00 pm
Location: West Sussex

Post Sun Apr 16, 2017 11:50 pm

Thanks Gavt. Just checked out injector-tune, think I'll go with them.

Shame I just forked out 15 quid on some new o rings never mind!
E30 325i Cabriolet Alpinweiß chromie
F12 640d
G11 730d