another boost leak thread
#1
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another boost leak thread
have a boost leak - a massive 1, car struggles to get to 10 psi on primary turbo , before i had perfect 10-8-10 now i got 5 and raising (slowly) and then secondary kicks in (after 4500) and i got 10 , i took off all the couplers, investigate them , and i found only 1 little hole in a 1 mm hose i got leading from UIM to BOV i obviously replaced that straight away, also replaced more hoses, goin to actuator and crv replaced two that looked bit suspicious, checked pressure chamber hoses when i pull them out i can hear air escaping so there is some pressure there , did the road test 4 times now and still get the same at 35mph i put my foot down and after 3k boost is slowly going up till revs hit 4500 then its 10 psi...i checked charge control actuator rod pulls in and out as normal...im running out of ideas here, btw how do i test if check valves blow only 1 way? do i need some air compressor or something?
any ideas what it could be?
any ideas what it could be?
#3
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its not turbo , if 1st turbo wasnt producing 8psi (at least) secondary turbo wouldnt gone off at all(afaik) i had my turbos replaced last year anyway (2nd turbo was broke, spraying oil to engine bay) im thinking about something simple but im not as experienced with finding boost leaks like some of the peeps here...
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CCA is fine mate i went through http://autosportracetech.com/RX-7/Tu...aryExplanation and tested if this rod it pulled in or not and it seems to work fine...
i thought it was a check valve (got viton ones) coz i couldnt blow through it either way but after taking it off and playin withit for a while it came back to normal state (somehow) so i could blow through it one way..i put it back in and took it to test drive...still, the same ..from 5 goin slowly to 8 psi then 4500 revs second turbo kicks in normally....
A simple test for the Charge Control Actuator is to start the engine and let it idle, the actuator rod will be pulled in. Stop the engine and remove the hose from Chamber A and the actuator rod will be out.
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