should a vented opti hold vacuum?
#1
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i have a new msd opti and im aware they leak where the wiring goes in. so i put a big glob of silicon over it. i have a vacuum gun an it still bleeds off vacuum but now its pretty slow. i also lightly siliconed the cap o ring to the cap and it still doesnt quite hold vacuum with my finger plugging the other line. is this normal or should i keep searching for another leak?
#4
TECH Fanatic
iTrader: (4)
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Shaft/bushing seal let a little by? common route for oil intrusion on 95-97 applications, bushing is not perfectly sealed on spline drive 93-94 cars. What drive type you got?
edit: I take it you're just testing off the car to see how tight it is with one of the vacuum harness lines capped, drawing vacuum on the other?
edit: I take it you're just testing off the car to see how tight it is with one of the vacuum harness lines capped, drawing vacuum on the other?
#6
TECH Veteran
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
i have a new msd opti and im aware they leak where the wiring goes in. so i put a big glob of silicon over it. i have a vacuum gun an it still bleeds off vacuum but now its pretty slow. i also lightly siliconed the cap o ring to the cap and it still doesnt quite hold vacuum with my finger plugging the other line. is this normal or should i keep searching for another leak?