Please help finding vacuum leak!
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Please help finding vacuum leak!
Well Ive been tryin and I cannot find this leak that has been plaguing me. The short fuel trims are indicating that I have a leak somewhere so the hunt begins. Its the stock intake mani and throttle body. I have capped/plugged the port on the driver side for the PCV system and the port on the TB that goes to the passenger side valve cover. I tied both valve covers together and ran them together into a catch can and vented the can to atmosphere.
Another thing is the IAT sensor that I relocated to the EGR hole in the intake mani with a EGR block off plate. I have put sealant around the IAT sensor but nothin seems to change. I have tried to spray ether around the heads and intake gasket but it doesnt seem to change any, I havnt gotten it to rev up at all. What else sees vacuum? FPR hose? I am just looking for ideas on what to check next.
Another thing is the IAT sensor that I relocated to the EGR hole in the intake mani with a EGR block off plate. I have put sealant around the IAT sensor but nothin seems to change. I have tried to spray ether around the heads and intake gasket but it doesnt seem to change any, I havnt gotten it to rev up at all. What else sees vacuum? FPR hose? I am just looking for ideas on what to check next.
#2
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what did you put on? is this on the turbo truck? check anywhere that involves the air flow/intake. you never pulled the intake off or did you? if so did you tq it down, or just snug it up? did you check the o-rings? how about the map sensor on top of the intake, did you break the clip that holds it down? did you break a line at the evap? its really hard to pin point when i dont know exactly what you did/changed out before the problem began.
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what did you put on? is this on the turbo truck? check anywhere that involves the air flow/intake. you never pulled the intake off or did you? if so did you tq it down, or just snug it up? did you check the o-rings? how about the map sensor on top of the intake, did you break the clip that holds it down? did you break a line at the evap? its really hard to pin point when i dont know exactly what you did/changed out before the problem began.
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I also forgot to mention that we took off the TB and cleaned it this past weekend, also cleaned the IAC as well. It seems to help but not all the way. Someone had informed me about a smoke that you can hook up/pump into the EVAP? I may just start over, take off the intake and re-install it that way I can check off things that it could be. I installed this about 3-4 months ago so thing tend to slip my mind
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I also forgot to mention that we took off the TB and cleaned it this past weekend, also cleaned the IAC as well. It seems to help but not all the way. Someone had informed me about a smoke that you can hook up/pump into the EVAP? I may just start over, take off the intake and re-install it that way I can check off things that it could be. I installed this about 3-4 months ago so thing tend to slip my mind
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Check you're wastegate just to make sure it's working properly. I had a vacuum leak last week that I couldn't figure out; I checked over all the hoses and still no luck. Took the wastegate off and found that the seal was broke causing air to come out of the top port creating a vacuum leak. My truck also didn't want to build up boost as fast as usual, but it was barely enough to notice. Just a suggestion..
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Check you're wastegate just to make sure it's working properly. I had a vacuum leak last week that I couldn't figure out; I checked over all the hoses and still no luck. Took the wastegate off and found that the seal was broke causing air to come out of the top port creating a vacuum leak. My truck also didn't want to build up boost as fast as usual, but it was barely enough to notice. Just a suggestion..
Yes, I am 2 bar SD tuned.