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Posted by mazda-man, Jan 6, 2011
Newbie Forum - Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum.
Complete seal kit for DSM/Evo OEM injectors. (Does not fit FIC/BlueMAX injectors. Order kit SLK 125/6 x4 for FIC injectors.). Great kit at a great price. It doesn't say Viton on the description but I believe that they are. I ordered them about a year ago and spoke with FIC on the phone. It's $25 (with free shipping) and thats for the whole kit, upper and lower o-rings and seals.
Hope this helps!
The vacuum line is leaking? Just wrap a zip tie around it or replace the line if it's old an then secure it with a zip tie.
There are various ways of modifying the upper seals to make the injectors press harder into the lower seals... but I found that a $4.99 assorted box of grommets from Harbor Freight has a set of 5/16" grommets in it that are a hair thicker and slightly less-pliable than the factory upper seals, but not thick enough to push the upper seal out of the rail. They work beautifully and I've boosted it to 40 PSI on the same leaky lower seals while boost leak testing, and not a single leak. They also cost 1/4 as much and you're left with 96 spare grommets for your next 50 wiring jobs.
Have that little nugget.
EDIT: OH... hey... yeah that bit about your fuel pressure regulator... Is it leaking gas into your intake manifold? Pull the vacuum line after it's been running and see if fuel dumps out. That could be really bad.