Vacuum leak or something worse?!
03-05-16, 01:12 AM
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Vacuum leak or something worse?!
Can someone help me out my car isn't holding a rpm except at idle and when I hit 5-5100k I lose all power and it bogs down to around 35-4000rpm until I let off the gas I'll try and post a video when I get home
03-05-16, 08:43 PM
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Turbo back exhaust intakes and a SMIC,the car was bought from auction and sat in my garage until yesterday so in assuming it was like this before I got it. Oil pressure gauge is disconnected I have an aftermarket one
03-06-16, 05:15 AM
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UPDATE i fixed the jumping idle but still the car shutters at 2600rpm and then al power is lost at 5k the motor doesn't even rev sooooo thats where I'm at any ideas cuz I'm out i replaced 15 lines under the UIM and changed the fuel filter thats what fixed the other problem
03-14-16, 05:02 AM
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Your turbos aren't even building boost from the first video, the boost gauge sits in vacuum the whole time, that shouldn't happen, they should start to go into positive when you rev, so there is a big problem there.
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03-14-16, 11:51 AM
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03-14-16, 08:28 PM
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To fix the jumpy idle I swapped the TPS and re adjusted it. Now I'm still having the car jerks at 2600rpm and cuts out at 5100rpm with no 2nd turbo transition
03-15-16, 11:31 AM
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Wow I'm having the exact same problem and I can only reach ~6 psi of boost on the first turbo. Maybe you have leaks?
03-15-16, 11:43 AM
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I'm getting around 8-10 psi on my first turbo, I've checked and so far the thing I did see was the charge control valve was not shutting when it should so I swapped that out for a known working one and still have the problem so I'm thinking I have a leak somewhere in the vacuum chamber or the solenoid
03-15-16, 02:51 PM
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03-15-16, 10:44 PM
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Carb cleaner works too. Just don't spray it directly on the exhaust and take necessary precautions. Smoke is a PITA IMO.
Just thought of something. If you're gonna go through the trouble of making a smoke device, you might as well make a boost leak checker. That'll work.
Just thought of something. If you're gonna go through the trouble of making a smoke device, you might as well make a boost leak checker. That'll work.
Last edited by FührerTüner; 03-15-16 at 10:47 PM.
03-16-16, 11:51 PM
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UPDATE!! I broke down and took it to a Mazda dealer 
here in japan it was there for 2 days, I went today to check on it and the guy said its my gauges. The wires from the odometer to the ECU aren't working correct and when the odometer isn't reading the ECU isn't picking it up it puts it into SAFE MODE and won't let you go above 5000RPM. So now off to find a new Spedo set. Good news is they only charged me 1,000Yen (roughly $8.75) for two days of trouble shooting!!! WIN!
here in japan it was there for 2 days, I went today to check on it and the guy said its my gauges. The wires from the odometer to the ECU aren't working correct and when the odometer isn't reading the ECU isn't picking it up it puts it into SAFE MODE and won't let you go above 5000RPM. So now off to find a new Spedo set. Good news is they only charged me 1,000Yen (roughly $8.75) for two days of trouble shooting!!! WIN!
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