Quote:
Originally Posted by blue62
So from his pictures I made a few assumptions.
1. He is in England and in his video he is driving from the right side of the car so it is a European spec car.
So no SAI system. So no spot to put a vacuum gauge like a U.S. spec. car which has a vacuum port on the front crossover tube left side near the throttle body. In plain view.
2. I assume he took things apart looking for a place to connect the vacuum gauge.
I believe he found the vacuum port for the EVAP system which I think is on the front crossover tube right hand side on the bottom. Out of plain view. So as he moved and turned the rubber collar over the check valve came out.
Not assumptions:
1.He has no EVAP system related codes. Which he should have because if the check valve were out of the vacuum port then the EVAP system could not get vacuum so would fail the first EVAP test by the DME/ECU and would set a code.
So most likely he was not running with the check valve unplugged from the vacuum port.
2.Even if the check valve were missing from the vacuum port the vacuum leak would be from a hole about an 1/8"th -1/4" in diameter. Very doubtful that would cause his issue.
Also if I understand your thoughts correctly your saying there is a possible problem with a vacuum leak where the check valve is supposed to go.
So how would you test your theory????
Put everything back the way it is supposed to go. Then test drive the car???
If that fixed the problem great.
But if the problem is still there he would have to go through the work of getting back into the engine bay, accessing the vacuum port and doing the vacuum test.
That is a lot of extra work to run a simple test. Do it while your there.
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Okay, so the check valve is not broken it was just some sealant around it not sure why but it’s not broken. I blow through it one way and it’s solid, and the other way air can pass.
So here are the readings from the vacuum gauge in the two different ways that you have suggested…
Oh and does anyone know the thread and size of the fuel rail pressure test port cover as pictured? As they’ve sent me a kit without a size I can use ��
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