So I recently replaced all of the nozzles in my injectors. After completeing the job, I began to notice a strong un-burnt diesel smell. It appears as if if 3 or 4 of the six injectors are leaking out of the middle!

I'm pretty sure I tightened the two halves sufficiently; is this new injector time? Should I use some sort of silicone sealant between the two halves?

Also, has anyone ever tried pulling injectors out while the intake is still in place on the 603?

Thanks!

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1987 300D wvo on the way!