turbo not boosting up
#1
Junior Member
Thread Starter
Join Date: Dec 2007
Location: Canberra
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
turbo not boosting up
hey guys, i just got my FC few weeks ago and i'm trying to boost it up but it just won't. when I bought it was siiting on 6psi, I tried boosting using a manual boost controller but it went down to 5psi. I got it full serviced today and now it's sitting on 3psi. I asked the mechanic and he told me probably something to do with the exhaust. But i think it's not that, co'z the engine and turbo are rebuilded start of this year. I changed the hoses to silicon but it's still the same. Im just new to rotary so plz someone help me.
#3
top row 2nd from left..me
Join Date: Jul 2003
Location: chicago
Posts: 336
Likes: 0
Received 0 Likes
on
0 Posts
Get rid of the cats and the turbo will boost more do to less restriction. Its helps to have an FCD as well. Carefull with the boost controller you could pop your motor without extra fuel and a ported wastegate.
#7
do you have the boost controller lines routed correctly? as in one line from the compressor to the boost solenoid and out to the wastegate nipple?
but yeah, route the hose from the compressor to the wastegate again and check your boost
but yeah, route the hose from the compressor to the wastegate again and check your boost
Trending Topics
#8
Junior Member
Thread Starter
Join Date: Dec 2007
Location: Canberra
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
what if it doesn't go back to 6psi? I went for a drive today and i heard some ssssshhhhh noise like air leaking around where the turbo side is when i turned it off. So i'm suspecting maybe some hose problems. I went to a shop aswell and told me maybe the connection between the turbo and throttle body. What do you think about that. thanks
#9
Junior Member
Thread Starter
Join Date: Dec 2007
Location: Canberra
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
the owner told me when i bought that it has a high flowed cat. does that make any difference? thanks
#11
the turbo doesnt mount onto the throttle body. maybe you blew out the turbo inlet gasket (aka turbo to manifold gasket) or the manifold to block gasket. i replaced my destroyed turbo inlet gasket and all exhaust leak sounds were gone and it started boosting normally
what if it doesn't go back to 6psi? I went for a drive today and i heard some ssssshhhhh noise like air leaking around where the turbo side is when i turned it off. So i'm suspecting maybe some hose problems. I went to a shop aswell and told me maybe the connection between the turbo and throttle body. What do you think about that. thanks
#13
he may be right. if it's stuck open, then a lot of the exhaust gases will just bypass the turbine wheel and it'll feel like a 2 stroke motor trying to build boost on a borg warner turbine
#16
Junior Member
Thread Starter
Join Date: Dec 2007
Location: Canberra
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
with the boost controller - 3psi
without the boost controller - 2psi
the engine and turbo was rebuild start of this year. the owner was an old guy so i don't think he have been pushing it hard. hopefully i'll get this thing figure out co'z i'm getting unpatient, i wana feel the power!
without the boost controller - 2psi
the engine and turbo was rebuild start of this year. the owner was an old guy so i don't think he have been pushing it hard. hopefully i'll get this thing figure out co'z i'm getting unpatient, i wana feel the power!
#17
Lives on the Forum
hey guys, i just got my FC few weeks ago and i'm trying to boost it up but it just won't. when I bought it was siiting on 6psi, I tried boosting using a manual boost controller but it went down to 5psi.
Mah bad...
-Ted
#19
Junior Member
Thread Starter
Join Date: Dec 2007
Location: Canberra
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
everytime i try to boost it, it keeps going down.
i got full serviced and it went down to 3psi.
i took the boost controller and it went down to 2psi.
#21
route the wastegate vacuum line back to the compressor housing. if that doesnt work, check to make sure your wastegate is working properly..ie: not stuck open.
#22
Junior Member
Thread Starter
Join Date: Dec 2007
Location: Canberra
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
I took the hose out between the turbo and the wastegate, isn't meant to boost hardcore!? Well my car didn't and stayed low boost. The car is not blowing smoke, so I guess my turbo is still alive. So probably something is wrong with my wastegate. Am I right? what do you think guys? Thanks
#24
Junior Member
Thread Starter
Join Date: Dec 2007
Location: Canberra
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
#25
rotorhead
iTrader: (3)
Get an air pump and supply pressure to the nipple on the wastegate actuator. You should be able to hear it opening at 6psi. This is a lot easier to do with the turbo off the car.
But the first thing I would do is check for boost leaks. I bet you have a big one. Use a boost leak tester such as this (universal tester at bottom) www.boostpro.net/prodtester.html or fabricate your own.
But the first thing I would do is check for boost leaks. I bet you have a big one. Use a boost leak tester such as this (universal tester at bottom) www.boostpro.net/prodtester.html or fabricate your own.