cossy boost problem
#1
cossy boost problem
i have a tt t34 with a 55 exhaust housing and a -34 . i can't get it to boost any more that 22 psi.
i've tried pulling the pipe of the turbo to see it boost's any more and i get it to 25 psi
i've checked for air leaks, removed the dump valve, tried another bost gauge but nothing changes.
what else can i try.
i've tried pulling the pipe of the turbo to see it boost's any more and i get it to 25 psi
i've checked for air leaks, removed the dump valve, tried another bost gauge but nothing changes.
what else can i try.
#7
i've just checked the wastegate and it looks like it sits flush when its closed, so i don't think its that.
does anyone have a tool to borrow me to pressurise the boost system (i will leave a depost). it goes onto the hose by that goes to the air filter from the the turbo.
does anyone have a tool to borrow me to pressurise the boost system (i will leave a depost). it goes onto the hose by that goes to the air filter from the the turbo.
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#8
More boost Igor!
iTrader: (1)
Have you tried another amal valve? Is yours working?
If you've got the compressor directly connected to the actuator you'll get whatever amount of boost you've set by the preload on the actuator's rod. If you have the amal valve connected, the ECU will be able to control the boost as best it can. Don't forget that the ECU will (or should!) wind the boost down if the inlet temp appears too high.
Do you have another actuator to try?
Check your boost hoses for splits.
If you've got the compressor directly connected to the actuator you'll get whatever amount of boost you've set by the preload on the actuator's rod. If you have the amal valve connected, the ECU will be able to control the boost as best it can. Don't forget that the ECU will (or should!) wind the boost down if the inlet temp appears too high.
Do you have another actuator to try?
Check your boost hoses for splits.
Last edited by cozmeister; 17-03-2009 at 05:29 PM.
#10
More boost Igor!
iTrader: (1)
As I understand it, the actuator will hold whatever the spring/diaphragm can resist. If they're knackered, it won't hold as much as it would otherwise.
The vacuum pipe on the actuator allows some assistance in the form of vacuum/boost from the turbo or inlet manifold, so if that's broken there won't be enough assistance.
The vacuum pipe on the actuator allows some assistance in the form of vacuum/boost from the turbo or inlet manifold, so if that's broken there won't be enough assistance.
#11
Have you tried another amal valve? Is yours working?
If you've got the compressor directly connected to the actuator you'll get whatever amount of boost you've set by the preload on the actuator's rod. If you have the amal valve connected, the ECU will be able to control the boost as best it can. Don't forget that the ECU will (or should!) wind the boost down if the inlet temp appears too high.
Do you have another actuator to try?
Check your boost hoses for splits.
If you've got the compressor directly connected to the actuator you'll get whatever amount of boost you've set by the preload on the actuator's rod. If you have the amal valve connected, the ECU will be able to control the boost as best it can. Don't forget that the ECU will (or should!) wind the boost down if the inlet temp appears too high.
Do you have another actuator to try?
Check your boost hoses for splits.
i will borrow my mates actuator and give it a try, i've sucket on mine to see if the diaphram is split and pulled on the bar, its very, very strong.
i though if i pulled the pipe from either the turbo or actuator it should boost like mad.
#23
he said if i remove the actuator pipe it should boost like mad. if not its either the turbo or a boost leak
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