Re: [MBZ] 300SDL Engine Vacuum pump question
you should have about 23 or so vacuum on either port. Brian Smyla wrote: The vacuum pump on the engine in my '86 300SDL has two ports; one is for the brake booster, the other is a smaller port that appears to handle the emission control system. Does the pump supply vacuum to both of these ports? I have vacuum on the brake booster port, but not on the smaller port. Is this a normal condition? Thanks in advance. Brian Smyla ___ For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- Kaleb C. Striplin/Claremore, OK 89 560SEL, 87 300SDL, 85 380SE, 85 300D, 84 250 LWB, 83 300TD, 81 300TD, 81 240D, 81 240D, 76 450SEL, 76 240D, 76 300D, 74 240D, 69 250 Okie Benz Auto parts-email for used parts
Re: [MBZ] 300SDL Engine Vacuum pump question
The T on mine was cracked right where the line from the Vacuum pump meets the bottom T - it wasn't obvious - had to look hard to find that leak. On 12/14/05, Peter Frederick [EMAIL PROTECTED] wrote: No, it's not. Either the port itself or the line is plugged, probably. The hose coming up form the small port has a restriction in it (yellow plastic connector) that you may need to remove to get vac at the five way T connection. If you have vac at the T with all the lines plugged, verify that both lines going off to the passenger side hold vac -- if not, the actuator for the EGR and air recirc valve are blown. You can replace them or just plug the lines at the T. The other two lines are for the tranny shift control (lack of vacuum will produce VERY hard shifts) and the climate control (no vac gives you conditioned air, but only out the defrost vent). Peter ___ For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net -- OK Don, KD5NRO Norman, OK '90 300D, '87 300SDL, '81 240D, '78 450SLC The FSM created the Diesel Benz http://www.venganza.org/
[MBZ] 300SDL Engine Vacuum pump question
The vacuum pump on the engine in my '86 300SDL has two ports; one is for the brake booster, the other is a smaller port that appears to handle the emission control system. Does the pump supply vacuum to both of these ports? I have vacuum on the brake booster port, but not on the smaller port. Is this a normal condition? Thanks in advance. Brian Smyla
Re: [MBZ] 300SDL Engine Vacuum pump question
The vacuum pump on the engine in my '86 300SDL has two ports; one is for the brake booster, the other is a smaller port that appears to handle the emission control system. Does the pump supply vacuum to both of these ports? I have vacuum on the brake booster port, but not on the smaller port. Is this a normal condition? No, I don't think so. (Assuming you disconnected all the potentially leaky stuff and just hooked up a vacuum meter.) -- Jim
Re: [MBZ] 300SDL Engine Vacuum pump question
This seems to indicate the small port is plugged. There is supposed to be an inline filter fitting where the hose from the small port to the + connector to intercept the dust/particle in the line. Without it the small port will be clogged up over the time. The small plastic inline filter (has mesh in it) is a MB item. I had ordered two from Rusty years ago but can't seem to find them at this time. Check to see if the filter is still there or clogged up. Now another possibility is to remove the small port from the vacuum pump and clean it but I have no idea if it is doable... Tan --- Brian Smyla [EMAIL PROTECTED] wrote: The vacuum pump on the engine in my '86 300SDL has two ports; one is for the brake booster, the other is a smaller port that appears to handle the emission control system. Does the pump supply vacuum to both of these ports? I have vacuum on the brake booster port, but not on the smaller port. Is this a normal condition? Thanks in advance. Brian Smyla ___ For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] 300SDL Engine Vacuum pump question
Brian Smyla wrote: The vacuum pump on the engine in my '86 300SDL has two ports; one is for the brake booster, the other is a smaller port that appears to handle the emission control system. Does the pump supply vacuum to both of these ports? I have vacuum on the brake booster port, but not on the smaller port. Is this a normal condition? Both ports supply supply vacuum. The larger one for the brake booster and engine shut off and the smaller one for most of the other vacuum consumers (EGR, climate control, transmission, etc.). Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi
Re: [MBZ] 300SDL Engine Vacuum pump question
No, it's not. Either the port itself or the line is plugged, probably. The hose coming up form the small port has a restriction in it (yellow plastic connector) that you may need to remove to get vac at the five way T connection. If you have vac at the T with all the lines plugged, verify that both lines going off to the passenger side hold vac -- if not, the actuator for the EGR and air recirc valve are blown. You can replace them or just plug the lines at the T. The other two lines are for the tranny shift control (lack of vacuum will produce VERY hard shifts) and the climate control (no vac gives you conditioned air, but only out the defrost vent). Peter
