how do i find a vacuum leak on a 3.9 ltr engine
my truck is lacking power when in drive , it will rev up when not gear, but will not rev up when in gear, told of a possible vacuum leak, ive replaced all the vac lines,, whats next
Any lights on the dashboard turned on?
have you changed the trans fluid? are any fuel lines pinched ? is y
our EGR valve stuck closed
fuel pressure is good, check engine light is on, egr valve is ok, and ive changed the trans fluid when I did the 100,000 service the truck only has 127,000 on it,
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