FPR leaking fuel.. A little help?

[unitt01]

Hey guys my fpr is now leaking fuel and it's from the O ring that connects it to the fuel rail. Is the o ring replaceable or do I have to get a new fpr ? Thanks..

[reelizmpro]

replace the o ring.

[goldenbb]

Fix it--fuel leaking onto a hot engine is a big no no unless you're trying to burn the car up.

[TSI]

Yup, o ring is replaceable, i believe it may even be the same part as the injectors' o ring

[betsy325e]

http://www.realoem.com/bmw/enUS/showparts?id=1564-USA-09-1986-E30-BMW-325e&diagId=13_0233

Injector o-rings and FRP o-ring are the same according to OEM diagrams.

If it leaks with new o-ring, try to seat the o-ring properly before tightening the two 10mm bolts on either side, as sometimes just tightening the bolts won't create a good seal.

Also make sure the threads on the fuel rail aren't stripped (seen this happen, particularly on the right-hand side next to the intake manifold where it can be difficult to get at that bolt).

You can always get a longer 10 mm bolt and put another nut on the bottom if you've got some bad threads.

[TurboJake]

and don't forget to lube it!

[unitt01]

Thanks guys! Just put in a new o ring and still leaking... So it's either now the fuel rail or the fpr?

[unitt01]

Gonna try to get longer bolts and see if it just needs better tightening.

[unitt01]

Ok figured it out. PO had left the old o ring from an old fpr inside the fuel rail :x
Thanks again you guys :bow: