I took this approach of OVER thinking everything and it cost me just short of £5,000! Pressure test it first instead of assuming then at least you can rule out for sure the most common problem these cars have.
Correct AFR
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I will sure do when I am at my car in the end of December.
From what i know, there is also a little harsh way to test it for the leaks, you an lift the whole car, put it in a gear, get somebody to listen under the hood for blowing hoses and slam the throttle and the brake at the same time, and modulate the brake to keep rpms at turbo-happy level. Should not be used for extensive time though. I don't have a lift and am not a big fan of this method
I am planning to make an adapter for the turbo inlet, any ideas what piece of rubber to make it from? suspension bushing with a vband around and a hole in a middle with tire valve?
But do you guys agree that in my videos it does look a little strange that boost raises to demanded level and then drops?
All other times I had proper leaks, it would make a typical blowing sound and would not raise the boost.Last edited by domas; 6 November 2014, 13:51.Comment
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Be sure to tie up your horse outside the garage for this test - sounds like some cowboy engineering to me
From what i know, there is also a little harsh way to test it for the leaks, you an lift the whole car, put it in a gear, get somebody to listen under the hood for blowing hoses and slam the throttle and the brake at the same time, and modulate the brake to keep rpms at turbo-happy level. Should not be used for extensive time though. I don't have a lift and am not a big fan of this method
Paul Nugent
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1994 S2 Coupe ABY - aka Project Lazarus
2001 A6 allroad 2.5TDi - family tank
2003 S4 Avant 4.2 V8 - daily burble
Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)
There are only 10 kinds of people that understand binary - those that do, and those that don't
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Yeh! Sounds like nothing I'd out my car through. Specially since some leaks you will NEVER hear. Plus a boost leak kid is under £100 on the net that'll do the job!Comment
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Yes PCV.CCV is PCV (breather pressure control) valve, right?
Then why do I want to disconnect it? is there a particular reason breather is not tested? So you mean that I have to bung the hose @ huge maf connection (bottle works great here) then bung the disconected line to pcv, and apply pressure to MAF boot, where PCV line was?
Blank where the PCV goes into the maf hose (wheel bolt head works).
Just leave the PCV open.
Put a big plug with a schraeder valve in the MAF hose (MAF and airbox top removed)
Pressurize the system to 1 bar say (I normally pressure test to the peak boost the car will see, not saying its correct but it works for me)
Large leaks will be audible, use soapy water and a spray bottle to find other leaks. Check all joints, ISV, vacuum lines, injectors seats etc.
If you have a lot of air loss through the wategate line you can disconnect it and plug the line temporarily.
I would check you cannot blow through the DV, and check the diaphram holds vaccum. (you pressurise both sides if it when leak testing including the MAF hose)
I think you can low pressure test with the PCV connected to check for leaks, but confirm that first, I dont as I use a catch tank.Current-2004 Impreza PPP wagon
Sold-92 3B coupe-RS2+, 996s, konis, rear torsen, forged rods........
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You will never hear small leaks with the engine running, far less loading it like that, I would not bother.
This is kind of going off topic, I would start your own thread, list faults, tests done so far, any fault codes, exact car spec etc.Current-2004 Impreza PPP wagon
Sold-92 3B coupe-RS2+, 996s, konis, rear torsen, forged rods........
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Yes of course, we love everything 5 pot turbo
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