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Help- coolant in vacuum line

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I replaced my fuel pressure regulator and now I noticed I have coolant flowing through my vacuum line, I believe going to the map sensor?!

It’s the vacuum line on the front of the charge air cooler in front of the two coolant lines.

did I hook up the coolant lines wrong??



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No worries, That's the coolant line to the small header tank, I thought! 💡

Atwell Haines

'88 Esprit

Succasunna, NJ USA

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Yes, that's the bleed hose for the chargecooler, to get airbubbles from the chargecooler to the expansion tank. If you get a good flow of coolant, this means there is little or no air left. So you did a good job bleeding the system. 😉


I have made many mistakes in my life. Buying a multiple Lotus is not one of them.


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If you upgrade to a Full Forum Member you can have a download of the parts manual which would help your blood pressure :)

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

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