So just to recap, connected in line from the tgc to the turbo gauge reads 55hg at tickover and starts to decrease to finally reaches 5hg at 2500 rpm. I perform a driving test but obviously, same figures. Just to be sure, hose from the vacuum pump connects to the vacuum port of the tgc and "out" port connects to the turbo, is that correct ?
And as Bernard noticed, I feel confident with the condition of the turbo and just wonders if the vacuum pump has not a problem...
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