Vacuum check 2.8L
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Junior Member
Joined: Dec 2012
Posts: 30
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Year: 1986
Model: Cherokee
Engine: 2.8L V6
Vacuum check 2.8L
Today I checked my vacuum on my V6 2.8L.
Did this as follows.
Have done this with a cold engine reaving around 1500.
Is this enough to conclude vacuum on this V6 is OK?
Did this as follows.
Have done this with a cold engine reaving around 1500.
Is this enough to conclude vacuum on this V6 is OK?
::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Kinda low. Should be at least 17, if not 19 or 20.
Retarded ignition timing can cause this. Are you looking for a vacuum leak or do you have a running issue?
Retarded ignition timing can cause this. Are you looking for a vacuum leak or do you have a running issue?
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::CF Moderator::
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
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