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Old 04-03-2003, 08:44 AM
Arthur Dalton Arthur Dalton is offline
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,768
When the system can not correct due to it being at limit , it
is best diagnosed with diagnostic equipment ..
However, a DIYer look around of all vac hoses for breaks/disconnects is where you can start...the common 104 places are the hoses running in front of the engine to the switch-over-valves and AIR pump.
Best to go to Search feature to find these locations..
Same for the fuel pressure regulator... there are several threads on that..
It also has a vac hose . If you disconnect the hose and see dripping is faulty.
Again, these are just simple possibilities that you can look for , but after that, the proper Data/Tech diagnosis is recommended
if you do not have Meters/exper. etc....
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