Engine Performance problem
1997 GMC Sonoma 6 cyl Two Wheel Drive Manual
are they a vaccume line that hooks to the pressure regulator or is the whole intake the vacume
Tuesday, April 21st, 2009 AT 7:46 PM
1 Reply
BLACKOP555
MECHANIC
10,371 POSTS
The vaccum line goes the regulator right off the manifold pressure. This is used to give more fuel to the engine with low manifold vaccum because the vehicle is runnin gat a higher speed needing more fuel. And it shuts back down with low vaccum as the engien doesnt need much gas anymore.