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Help cant figure out problem!

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Old Aug 17, 2010 | 10:57 AM
  #16  
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Originally Posted by Earthen
My boost gauge reads 0 at idle. When I give gas it drops below 0.
So you have absolutely no Vacuum? That's your problem. Your engine CANNOT idle without vacuum. It's running out of oxygen and killing itself.

BTW, your boost gauge does read vacuum right? I know there are some out there that don't.
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Old Aug 17, 2010 | 10:59 AM
  #17  
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From: 3rd Rock {from = sun}
Originally Posted by Earthen
My boost gauge reads 0 at idle. When I give gas it drops below 0.
Major air leak or your pipe/routing is wrong.
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Old Aug 17, 2010 | 11:38 AM
  #18  
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Originally Posted by xmaciek82x
So you have absolutely no Vacuum? That's your problem. Your engine CANNOT idle without vacuum. It's running out of oxygen and killing itself.

BTW, your boost gauge does read vacuum right? I know there are some out there that don't.
No, my boost gauge only reads boost. Defi-blue racer.
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Old Aug 17, 2010 | 11:41 AM
  #19  
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Originally Posted by Ev0ikon
Major air leak or your pipe/routing is wrong.
Double checked all this already, all lines are connected, no leaks, no bad installs.
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Old Aug 17, 2010 | 12:15 PM
  #20  
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Originally Posted by Earthen
No, my boost gauge only reads boost. Defi-blue racer.

Your boost gauge reads boost and vacuum. I have the Defi-red racer, everything below 0 is vacuum. At idle it should be around 20hg
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Old Aug 17, 2010 | 12:25 PM
  #21  
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Originally Posted by savagejay1
Your boost gauge reads boost and vacuum. I have the Defi-red racer, everything below 0 is vacuum. At idle it should be around 20hg
Then it reads 0 vacuum at idle. If I hit the gas the needle goes counter clockwise reading below 0 instead of boost above 0.
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Old Aug 17, 2010 | 12:41 PM
  #22  
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Use your right foot to engage clutch, you only stand halfway outside the car

If your needle is sweeping counter clockwise while on the gas (note constant throttle) then you have an issue for sure. That doesn't make much sense at all. How is that even possible?!?
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Old Aug 17, 2010 | 12:52 PM
  #23  
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From: ???
Is this your gauge?

http://www.google.com/imgres?imgurl=...0&tx=27&ty=121

Like above someone stated, anything below is vacuum. If your gauge goes below 0 when you give it throttle then definitely not right.

Did you put everything together or have a shop do it?

Also, you will never see boost when in neutral when you rev your engine. You will see your car come out of vacuum and hit zero.

Last edited by xmaciek82x; Aug 17, 2010 at 12:54 PM.
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Old Aug 17, 2010 | 12:58 PM
  #24  
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From: Orange County, CA
Originally Posted by xmaciek82x
Is this your gauge?

http://www.google.com/imgres?imgurl=...0&tx=27&ty=121

Like above someone stated, anything below is vacuum. If your gauge goes below 0 when you give it throttle then definitely not right.

Did you put everything together or have a shop do it?

Also, you will never see boost when in neutral when you rev your engine. You will see your car come out of vacuum and hit zero.
That is the exact gauge. It reads below when I hit the gas, otherwise it is 0. A buddy who does work on evos and I put it together.
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Old Aug 17, 2010 | 01:12 PM
  #25  
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Well, I told you what the issue is... I just don't know how to trouble shoot

It can be many things. I would start from basics, spark plugs. If you have misfires at idle then you don't have good vacuum, but you have zero vacuum so it's probably not it.

Also triple check you vacuum lines.

Someone already suggest timing. That could definitely cause poor vacuum. Late timing would cause poor vacuum, but you claim you have zero vacuum so....

Hopefully someone else can help you out more. I would move this thread into the engine section.
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Old Aug 17, 2010 | 02:05 PM
  #26  
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From: 3rd Rock {from = sun}
I suspect the big EGR tube in the intake manifold is not capped or connected properly. :}

EDIT:
Better yet, post a good picture of you engine compartment.

Last edited by Ev0ikon; Aug 17, 2010 at 02:08 PM.
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Old Aug 17, 2010 | 02:10 PM
  #27  
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I have checked all lines so many times, I dont know probably need a pro in my garage and checking himself.

Thanks for the help.
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Old Aug 17, 2010 | 02:26 PM
  #28  
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From: 3rd Rock {from = sun}
Don't give up yet. If you can't post some good pics maybe you should try and pressurize the entire system. A lot of times you can't "see" air leak.
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Old Aug 17, 2010 | 02:39 PM
  #29  
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Think I already gave up, in the process of making plans to ship the car to AMS and they will take care of the rest. I was scheduled to get tuned there anyways.
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