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Boost loss??

 
  #1  
Old 08-05-2010, 07:43 PM
Barnabas
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Boost loss??

So I just got done installing my new set of Autometer gauges...

So now I know I havea problem lol

I am only hitting about 12lbs of boost sometimes I creep to 14.

When I got up under the hood I noticed the fuel filter cap was leaking. I replaced that so no more fuel leak. Now how to find the leak/what could be causing this problem

7.3l crew cab 2001 Auto
 
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Old 08-05-2010, 07:44 PM
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here is the truck and the gauges:

This was while we were doing install they werent hooked up yet


 
  #3  
Old 08-05-2010, 08:11 PM
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Do a search for boost leak detector. They are easy and cheap to build and very helpful.
 
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Old 08-05-2010, 09:03 PM
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Originally Posted by Barnabas View Post
So I just got done installing my new set of Autometer gauges...

So now I know I havea problem lol

I am only hitting about 12lbs of boost sometimes I creep to 14.

When I got up under the hood I noticed the fuel filter cap was leaking. I replaced that so no more fuel leak. Now how to find the leak/what could be causing this problem

7.3l crew cab 2001 Auto
Make sure that the rubber boot that Autometer supplies is on tight. I had to use ty wraps and eventuallly replaced it because of leaks there.
 
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Old 08-05-2010, 09:05 PM
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ok thanks

I will be double checking stuff tomorrow morning and try to tighten up stuff. I cant work work on it till monday
 
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Old 08-05-2010, 09:08 PM
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Your welcome! You'll get it straightened out. Then your mileage will go to pot for a bit while you watch the boost guage go up. If it is a big boos leak your EGT's will go up as well.
 
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Old 08-05-2010, 09:13 PM
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my EGT's are right around 400 at 55 to 500-600 degree cruising around 65 MPH I am getting about 18 mpg (I drive about 600 miles a week) soo allot is highway.
 
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Old 08-05-2010, 09:15 PM
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Those look very good. What does it do when you romp on it?
 
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Old 08-05-2010, 09:16 PM
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gets up to 11-13 lbs sometimes creeps to 14
 
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Old 08-05-2010, 09:18 PM
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FWIW I am all stock except gauges not even a CAI
 
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Old 08-05-2010, 09:20 PM
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I'm sorry I meant your EGT's. When the rubber boot on mine started to go bad it fluttered around the 15 psi mark. I should have been seeing 25 + at times. As soon as I fexed it back to where it should be.
 
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Old 08-05-2010, 09:26 PM
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I havent really noticed what EGT's did when romping I will check it out.
l I will check out all the fittings... I may just go and replace them all. Here is my other boosted toy for you guys to enjoy until I can get back on here with updates to this






When i check out what you guys suggested Ill let you knwo the results!!
 
  #13  
Old 08-06-2010, 12:16 AM
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Originally Posted by Barnabas View Post
gets up to 11-13 lbs sometimes creeps to 14
Here is something else to try. Disconnect the red line to the wastegate actuator and see if boost increases. If it goes up it might be a weak biasing spring in the actuator allowing the wastegate to open too soon.
 
  #14  
Old 08-06-2010, 03:05 PM
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Originally Posted by PaysonPSD View Post
Here is something else to try. Disconnect the red line to the wastegate actuator and see if boost increases. If it goes up it might be a weak biasing spring in the actuator allowing the wastegate to open too soon.
where is this located?? I dont wanna start yanking red wires lol

I am not too well versed in diesel engines yet.
 
  #15  
Old 08-06-2010, 07:05 PM
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The red wire is really a tiny red tube. It leads off of your intake spyder to the wastegate on the turbo. The red tube runs from the center of the engine to the right( looking at the engine from the front), over top of the intake and to a small nipple on the waste gate. If i could figure out how to add this darn picture i could show you it.....
 

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