Hi guys,
Think I know the answer here but just double checking. My engine vac at idle is around 13.5 inches and idle is rough. When I plug off the hose leading to the large side of the vac advance module, the vac at idle goes up to 15.5 (better).
Sounds like the large diaphram is leaking to me. You guys agree ?
Also, any idea what vac level I should be targeting i.e. 17 in's ?
Thanks
dual diaphram vac advance question (on a 302)
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ClanCassidy
- Posts: 35
- Joined: December 29, 2006, 10:51 pm
- Location: Brighton, Michigan
dual diaphram vac advance question (on a 302)
"Honest Honey, this should be the last thing I need to buy for the truck".
Sounds like a bad one to me. You could test it with a hand held vacuum pump...I wouldn't recommend sucking on the line to test it, you may just end up with a mouth full of dirt. 
My "Slickitis" affliction began here...
66 F100 CC/65 F100 CC/66 F250 CC
If it starts to rain, they'll tax the splash.
If you want to fish, they'll tax the bass.
If you plant a yard, they'll tax the grass.
If you don't play nice, they'll fine your *$#!
66 F100 CC/65 F100 CC/66 F250 CC
If it starts to rain, they'll tax the splash.
If you want to fish, they'll tax the bass.
If you plant a yard, they'll tax the grass.
If you don't play nice, they'll fine your *$#!