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low vacum pressure

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    #1

    low vacum pressure

    I just finished my h22a1 swap and my intake vacum is only 10 inches now I checked my egr and adjusted timing and nothing still @ 10 inches, now I think (not sure) that the problem could be a vacum hose. The one @ the opposite end of the throttle body there's two hoses one for cruise control and I don't know where the other hose goes can someone help me out please
    Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu
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    #2
    Well I'm at school now and started the car and now the pressure rises from 2 to 10 and I have no clue what it is
    Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu

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      #3
      So I unhooked the vacum to the fuel pressure regulator and the vacum pressure went up to 14 now my question is could it be the oxygen sensor that I don't have cuz the wires got pulled out, can my air fuel ratio be messed up cuz of that
      Originally posted by bliz07 View Post
      Well I'm at school now and started the car and now the pressure rises from 2 to 10 and I have no clue what it is
      Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu

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        #4
        vacuum leak
        I <3 G60.

        0.5mm Oversized Stainless valves and bronze guides available. Pm me please.

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          #5
          What kind of liquid would be best to tell me if there is a leak?
          Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu

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            #6
            id use brake clean or carb clean, spray around the manifold and if the idle rises then you just pin pointed your spot.
            I <3 G60.

            0.5mm Oversized Stainless valves and bronze guides available. Pm me please.

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              #7
              Thanx bud
              Originally posted by wed3k View Post
              id use brake clean or carb clean, spray around the manifold and if the idle rises then you just pin pointed your spot.
              Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu

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                #8
                How does the car run when its idleing?
                Sure your vac gauge is reading correctly?


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                My 5.7 LS1 Holden Ute

                A "Finished" project car is never finished until its been sold.

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                  #9
                  Originally posted by bliz07 View Post
                  So I unhooked the vacum to the fuel pressure regulator and the vacum pressure went up to 14 now my question is could it be the oxygen sensor that I don't have cuz the wires got pulled out, can my air fuel ratio be messed up cuz of that
                  well seeing as your O2 sensor sends a signal to your ecu to tell the car the mixture or the exhaust yeah not having that O2 will prolly make it run pretty rich

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                    #10
                    what RPM are you idling at?

                    CrzyTuning now offering port services

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                      #11
                      Well since I disconected the egr and fuel pressure vacum its running at 14 inches with both connected it hit 2 iches and kept bouncin to ten, my teacher said it could be that I don't have the oxygen sensor connected and it could be leaning out
                      Originally posted by evil_demon_01 View Post
                      How does the car run when its idleing?
                      Sure your vac gauge is reading correctly?
                      Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu

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                        #12
                        750 and I'm gettin the 14 inches without the egr and fuel pressure
                        Originally posted by d112crzy View Post
                        what RPM are you idling at?
                        Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu

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                          #13
                          Fix it first (replace broken O2 sensor), then trouble shoot. If you know there is something wrong take care of that first.
                          Officially "hilarious mad sarcastic"! Thanks CB74christ for the recognition of my work.

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                            #14
                            Yea that's what imma do this weekend replace the o2 hook everything back up and if the problems not fix then I'm goin to check for vacum leaks
                            Originally posted by lost_accord View Post
                            Fix it first (replace broken O2 sensor), then trouble shoot. If you know there is something wrong take care of that first.
                            Stuff 4 sale 2nd gen dsm turbo manifold, ebay type s blowoff valve, 93 ex pt6 ecu, f22a6 camshaft, f22a6 intake manifold, obd1 p13 ecu

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                              #15
                              A faulty o2 sensor won't cause low vacuum. Is it idling fine or does it feel like it's dying?

                              CrzyTuning now offering port services

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