Cornish Rattler Posted August 6, 2022 Share Posted August 6, 2022 (edited) Hi guys Does it matter if the vacuum pump is blocked off or left open if not running a servo 🙂 Edited August 6, 2022 by Cornish Rattler Quote Link to comment Share on other sites More sharing options...
western Posted August 6, 2022 Share Posted August 6, 2022 A mine of info here https://www.glencoyne.co.uk/200di.htm  Quote Link to comment Share on other sites More sharing options...
Anderzander Posted August 7, 2022 Share Posted August 7, 2022 I blocked mine off and it’s been fine …. What you can’t do though is take it out and blank it off.  The gear gives support to the camshaft iirc. Quote Link to comment Share on other sites More sharing options...
David Sparkes Posted August 8, 2022 Share Posted August 8, 2022 On 8/6/2022 at 10:02 PM, Cornish Rattler said: Does it matter if the vacuum pump is blocked off or left open if not running a servo As I understand it, the vacuum pump is trying to pull air from the servo chamber and discharge it where? I think into the crankcase. Thus if the pipe to the servo chamber is left open, the pump will do its best to pump all the air under the bonnet into the crankcase. While there is a limit as to what the pump can achieve, the crankcase could be 'pressurised', or at least have a larger than normal flow through it, possibly becoming visible by oil mist around any crankcase breathers. Regards. Quote Link to comment Share on other sites More sharing options...
Cornish Rattler Posted August 8, 2022 Author Share Posted August 8, 2022 1 hour ago, David Sparkes said: As I understand it, the vacuum pump is trying to pull air from the servo chamber and discharge it where? I think into the crankcase. Thus if the pipe to the servo chamber is left open, the pump will do its best to pump all the air under the bonnet into the crankcase. While there is a limit as to what the pump can achieve, the crankcase could be 'pressurised', or at least have a larger than normal flow through it, possibly becoming visible by oil mist around any crankcase breathers. Regards. Cheer's i've blanked it off now but not tested it yet, will i notice anything when i do 🙂 Quote Link to comment Share on other sites More sharing options...
Arjan Posted August 8, 2022 Share Posted August 8, 2022 Looking forward to your finding - I plan on doing the same  Quote Link to comment Share on other sites More sharing options...
jason110 Posted August 9, 2022 Share Posted August 9, 2022 Blank it off. We ran our hybrid like that for years and never was an issue. Just use some rubber hose with a bolt stuck in the free end. Quote Link to comment Share on other sites More sharing options...
Maverik Posted August 9, 2022 Share Posted August 9, 2022 If you're super keen, and can find a suitable blanking plate, you can actually remove the pump all together on 200tdi, might give you an extra 0.1 bhp back... Â 1 Quote Link to comment Share on other sites More sharing options...
Anderzander Posted August 9, 2022 Share Posted August 9, 2022 Â Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 10, 2022 Share Posted August 10, 2022 Don’t leave it open - it’ll be sucking in dust to the crank case as well as causing the engine to breathe heavily. Quote Link to comment Share on other sites More sharing options...
Cornish Rattler Posted August 10, 2022 Author Share Posted August 10, 2022 2 minutes ago, Snagger said: Don’t leave it open - it’ll be sucking in dust to the crank case as well as causing the engine to breathe heavily. I've sealed it now but going to to Cornwall in it next month so i was going to give it a service anyway before i go. Quote Link to comment Share on other sites More sharing options...
Bigj66 Posted August 19, 2022 Share Posted August 19, 2022 On 8/10/2022 at 5:11 PM, Cornish Rattler said: I've sealed it now but going to to Cornwall in it next month so i was going to give it a service anyway before i go. You’ll be living up to your forum name then on that trip….😂😂 1 Quote Link to comment Share on other sites More sharing options...
western Posted August 19, 2022 Share Posted August 19, 2022 On 8/10/2022 at 5:11 PM, Cornish Rattler said: I've sealed it now but going to to Cornwall in it next month so i was going to give it a service anyway before i go. Whereabouts in Cornwall? Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted August 23, 2022 Share Posted August 23, 2022 I'd fit a remote servo Quote Link to comment Share on other sites More sharing options...
Cornish Rattler Posted August 27, 2022 Author Share Posted August 27, 2022 On 8/19/2022 at 5:33 PM, western said: Whereabouts in Cornwall? Sorry not been on for a couple of weeks but going to Penzance and can't wait 🙂 Quote Link to comment Share on other sites More sharing options...
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