1994 850 leaking injectors

daversm · Post by **daversm** » 05 Apr 2014, 13:58

One of my fuel injector was squirting fuel from the blue seal that goes into the intake manifold and two others had a small leak in the same place, so I thought it was bad o-rings. I replaced them all, but the leaks are still there.

I was wondering if my injectors themselves had a leak. One thing I noticed is that the tips on the injectors are spinning. Does this mean they are broken? Other than that, I can't see any cracks or anything.

Also I didn't use any lube when putting them in, could this cause a leak?

The silver tip at the bottom

The tip I am referring to is circled in blue in the attached picture.

daversm · Post by **daversm** » 08 Apr 2014, 23:27

Yup they were broken, if the metal tips are spinning then its gonna leak from above the lower o-ring. Ended up buying rebuilt injectors of ebay for 90(set of 5). Working great so far.

Post by **rspi** » 09 Apr 2014, 10:38

Hmm, since you seen leaks on top of the injector seals (going into the manifold), my guess would have been the top seals at the rails were leaking. The tips should be spraying down into the head away from the seals, not sure how the fuel would be getting above the seals.