Running terrible need help
#1
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Location: Tacoma Wa
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Running terrible need help
I drive 25miles to work and back every day usually stop at a gas station right before work, turn car off hop back in get on it and its cant get over 2000 rpm and sounds like a tug boat. After it sits all day then I go home is fine up until I'm almost home starts doing it again. I did a boost leak test and found the pcv valve was bad and also felt shaft play on the turbo thought it felt a little sloppy so I rebuilt the turbo. Drove good on a test drive but the first time I took it to work again it was back, I also notice when topping off the car at idle after the turbo rebuild I was getting some serious blow by out oil fill. I'm thinking bad vavle stem seals? Any help would be appreciated.
#5
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think I have the same issue, I plugged the turbo hot side and pressure tested straight into the turbo inlet and air was leaking out from inside the turbo somewhere, what did you do to fix the air leaking into the oil return line?
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Im still having the same issue though with no boost leaks, my car hits 5psi of boost and falls on its face and bucks and jumps, I think I have a fuel issue.
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#8
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Interesting, don't want to go to that extreme of rebuilding the turbo as the turbo does not have any free play on the journal but I can still hear air escaping into the block some how. Is there anything else in the turbo that can cause a boost leak inside it like a seal or a gasket?
#10
Evolved Member
when I say hot side I really meant the LICP that comes out the bottom of the turbo, I plugged that and pushed air direct into the inlet and air was escaping inside the turbo somewhere, so where would that be and why? keeping in mind there is no in out or up and down play in the journal
#12
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#13
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That's not how a turbo works. And you shouldn't be doing that.
The "seals" Ima turbo are actually called pistons rings because that's what they are. They rely on pressure outside of the CHRA to be higher than inside in order to keep the oil in. So of course they don't hold any pressure .
The "seals" Ima turbo are actually called pistons rings because that's what they are. They rely on pressure outside of the CHRA to be higher than inside in order to keep the oil in. So of course they don't hold any pressure .
#14
Evolved Member
That's not how a turbo works. And you shouldn't be doing that.
The "seals" Ima turbo are actually called pistons rings because that's what they are. They rely on pressure outside of the CHRA to be higher than inside in order to keep the oil in. So of course they don't hold any pressure .
The "seals" Ima turbo are actually called pistons rings because that's what they are. They rely on pressure outside of the CHRA to be higher than inside in order to keep the oil in. So of course they don't hold any pressure .
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