From Mercedes Source .
I can hardly wait as there's little air flow through the interior with no HVAC fan .
-Nate
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (1) |
That's great ! you're InLine 6 cylinder engine also makes far more power than does my old Tech OM617 .
-Nate
Joe wrote :
>
>
>
> Just an FYI. My 1991 300D 2.5 (286K) and I just made a 650+ mile round trip to Philly area. 90% highway. No A/C, but heater on auto as it's winter here. Drove with "the flow" - though saw most of it in rear view mirror ;-)
>
> 33.36 MPG down, 33.23 MPG home.
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (6) |
First thing :
*CAREFULLY * remove the long vacuum pipe between the engine and brake booster , most models have a metal support you *MUST* undo else you'll break it when it flexes .
Then , remove the brass conector that attaches the pipe to the vacuum pump being _SURE_ to use only a 6 point socket (either 17 or 19 MM , I forget right now) , wipe all the oil & dirt off it and try to blow through it both ways ~ my bet is : it'll blow both ways and it shouldn't do this as it's a one way check valve , often the disc either has a groove worn in it so it leaks or the disc crumbles and falls inside the pump further complicating things ~ if the valve is wide open & blows both ways , start the engine and let it run a while , have a nice hot cuppa while you watch the open pump like a hungry hawk watches a mouse , rev. the engine occasionally , in due time you'll see tiny bits of crud (the disc remenants) come flying out of the open pump , stop the engine and replace the check valve with a new (or used) one and marvel at how it now reaches 20" of vacuum 30 seconds or less after you start the engine .
Don't stop the engine as soon as you see the first bit of crud come flying out , Tom's car had multiple bits of dead valve disc in it that kept cloggng the new valve we put in , frustating as it'd check out fine but loose vacuum as he was driving , this caused hard brakes and greatly increased pedal effort....
Be VERY careful to not allow any dirt or crud to fall inside the pump as you're working on it ~ this is why I always try to keep my engine clean , it facilitats repairs .
Like most mechanical repairs , first thing is proper diagnosis then you have to address the various bits in the proper order to achive satisfactory results ~ as soon as you have good vacuum , the rest will follow faster & easier / better than you think .
-Nate
David wrote :
>
> Hi Nate,
>
> I'll take another look. Nasty weather here in central NJ for the next few days. Don't know when I'll get back to the car. Drove it around the neighborhood a bit yesterday. Vacuum pump is coming off for a rebuild this weekend, though. Vac gauge was mostly wobbly and only a few inches. Probably just enough for it to shut off. Brake boost also very weak. At least I can work on the pump in the basement. I ordered their catalog. Lots of good stuff on their website.
>
> thanks,
> David
>
>
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (1) |
Of the front of the engine.....
Just use your ignition key , my 84/85 TD's tailgate only unlocks by vacuum if the engine is running so it's a two handed affair to open it after it sits a couple days .
You have to hold the key turned as far as it'll go whilst you press in the button and lift the tailgate .
-Nate
Boyd wrote :
>
> Any of you guys know where the vac pump is for the 85 300TD? My tail gate will not unlock with the rest of the locks, but it will lock. I am too old to be crawling back to unlock that door with the rear head rests on.  Â
>
>
> Boyd
>
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (10) |
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (5) |
Hi Nate,
I'll take another look. Nasty weather here in central NJ for the next few days. Don't know when I'll get back to the car. Drove it around the neighborhood a bit yesterday. Vacuum pump is coming off for a rebuild this weekend, though. Vac gauge was mostly wobbly and only a few inches. Probably just enough for it to shut off. Brake boost also very weak. At least I can work on the pump in the basement. I ordered their catalog. Lots of good stuff on their website.
thanks,
David
--- In diesel_mercedes@yahoogroups.com, "Nate" wrote:
>
>
> Don't feel too bad David ;
>
> I went through this same hell with my '78 & '80 300CD , my current '84 300CD has a _gasoline_ hose map on it thanx to Frantz having a bit of a hangover the dsay they built my car..... =8-^ .
>
> Didja look though _ALL_the home page files, photos and links yet ? there's a lot of different things in there so it takes time , lotsa time .
>
> I wish I had a scanner as I have thier Fall/Summer Catalog # 59M and parge # `65 has the correct diagrams....
>
> I'm sure if you take the time to peruse thier OnLine Catalog they'll have it there , or you can request a paper catalog from them .
>
> -Nate
> David wrote :
> >
> > thanks, looked there already, they didn't have the one I needed.
> >
> >
> > Alan wrote :
> > >
> > > Look at Ecklers,AKA Performance Products catalog or online. They have
> > > layouts of the vacuum lines.
> > >
> > > On Thu, Jan 17, 2013 at 12:27 PM, David Starbuck wrote:
> > >
> > > > **
> > > >
> > > >
> > > > Hi,
> > > >
> > > > Anyone out there with a 79 300D who could take some pictures of the vacuum
> > > > hose connections near the oil filter and valve cover? I have 3 hoses that
> > > > were plugged off and need to find out where they are supposed to go. I
> > > > think one or more might need to go to something on the valve cover but
> > > > nothing up there. A diagram for a 79 would be good, also. I find a lot of
> > > > diagrams for newer models, but they all have an EGR and mine doesn't.
> > > >
> > > > thanks,
> > > > David
> > > >
> > > >
> > > >
> > >
> >
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (2) |
I was working on it yesterday. No flex pipe on mine.
-David
--- In diesel_mercedes@yahoogroups.com, "Steve Parolin" wrote:
>
> Its an 84, but not a US model.
> No Turbo, antenna on the front fender, no sun roof. Most of the time when I am looking for parts I tell the guy behind the counter its an 80. The guys a the stealership are confused by my VIN #, non US compliant.
>
> The down pipe is for an 80, it matched with I pulled off, no flex coupling on it. 1 piece, solid.
>
> Does your pipe from the manafold to the resonator pipe have the flex peice on it ?
>
> Thanks
> Steve
>
>
> --- In diesel_mercedes@yahoogroups.com, "David Starbuck" wrote:
> >
> > Steve,
> > What year is yours? Mine is a 79 300D, no springs on mine.
> > -David
> >
> > --- In diesel_mercedes@yahoogroups.com, "Steve Parolin" wrote:
> > >
> > > 300D, non turbo.
> > >
> > > I dont have spring bolts at the junction between the Exhaust manafold and the down pipe, I beleive there should be, none of the chains, nor my online searches have turned up spring bolts or anything else for this junction.
> > > I have straight through bolts, and they have to be re-tightened every six months or so.
> > >
> > > What doese everyone else have ?
> > > Bolts, Studs, Bolts with springs, studs with springs.....
> > >
> > > Thanks,
> > > Steve
> > >
> >
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (7) |
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (9) |
Boyd, What Stan George posted is right. You have to find your leak. AND, a 300TD is a 123 series car, so the vacuum pump on the left side of the engine is used for the doors, tailgate and fuel flap, as well as the other functions. As far as I know, only the SDs (126) from that generation have separate electric vacuum pumps. Some later models have vacuum pumps under the rear seat, on the right side. These might be 124s or others. Tom In a message dated 1/30/2013 1:34:42 P.M. Pacific Standard Time, bgthegreat@verizon.net writes:
Any of you guys know where the vac pump is for the 85 300TD? My tail gate will not unlock with the rest of the locks, but it will lock. I am too old to be crawling back to unlock that door with the rear head rests on.
Boyd From: "audiolaw@aol.com" <audiolaw@aol.com>
To: diesel_mercedes@yahoogroups.com
Sent: Wednesday, January 30, 2013 12:34 PM
Subject: Re: [diesel_mercedes] Trunk & Fuel Flap Locked Out Tom Staggs, Follow Nate's lead. Your car is an SD. The vacuum pump for the doors, trunk and gas flap is IN THE TRUNK - it is NOT the vacuum pump on the engine. The SD has an electric vacuum pump in the spare tire well, right side, rear. It is a triangle looking foam plastic thing (the foam plastic is just the shell it sits in. The doors, trunk and flap work off this pump, NOT the engine pump. So lines going through the firewall are irrelevant. GOOD NEWS! The fact that your trunk and flap are staying locked means that your system is holding vacuum. BAD NEWS, it sounds as if you only have the "valet" key. The valet key will open the front doors and work the ignition. It should not open the glove compartment or the trunk. If you look at your key, it should be a flat blank, with notches on the top and bottom. The "main" (non-valet) key looks exactly the same, except that it has a straight groove machined into each side of the key. You can get a main key from any Benz dealer, although they will ask you for proof of registration and the VIN in order to make the key. Not expensive. Tom, '81 300 SD, 370+++ miles. In a message dated 1/30/2013 9:24:58 A.M. Pacific Standard Time, tomstaggs2@comcast.net writes:
Hey Nate,
Not panicing quite yet.
But this is my daily driver.
Wife has her car.
I and a friend both tried to turn the key in the lock either way and it will not turn. You see I have always locked my trunk with the vacuum system the only key I have is the ignition key I assume that is the only key needed.
I too took out the back seat bottom and found a tube and wire running to the front of the car on the drivers side near the door.
From what others discussed the vacuum might still be working and that is what is holding the spring loaded locks closed. I was wondering if instead of pulling it out from under the front seat I could go under the hood and disconnect the tube that is running back on the same side thru the firewall and suck on it. Will that work? this will keep the integrety of the vacuum system back thru the cabin to the trunk. BTW When I look at the tubes running thru the firewall they all seem to be clear/yellowing tubes not yellow green and black. Also the tube running under the back seat is black tube not yellow with green stripe.
Well not panicing yet but getting lower on fuel
Tom
-- In mailto:diesel_mercedes%40yahoogroups.com, "Nate" wrote:
>
>
> Remove rear seat , find the yellow plastic tube with the _green_ stripe and pull it out from underneath the _FRONT_ seat , suck on it and the trunk and fuel flap will unlock .
>
> To open only the trunk , turn the key counter clockwise until it's at an angle and _hold_ it there as you push in the key & button , this unlocks vacuum locked trunks .
>
> Then you can *gently* pull the right black plastic trunk side panel inwards enough to slide your hand in , find the fuel flap lock rod and pull it rear wards to unlock the fuel filler flap .
>
> No need to panic .
>
> -Nate
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (9) |
Any of you guys know where the vac pump is for the 85 300TD? My tail gate will not unlock with the rest of the locks, but it will lock. I am too old to be crawling back to unlock that door with the rear head rests on.
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (8) |
Boyd
Hey Nate,
Not panicing quite yet.
But this is my daily driver.
Wife has her car.
I and a friend both tried to turn the key in the lock either way and it will not turn. You see I have always locked my trunk with the vacuum system the only key I have is the ignition key I assume that is the only key needed.
I too took out the back seat bottom and found a tube and wire running to the front of the car on the drivers side near the door.
From what others discussed the vacuum might still be working and that is what is holding the spring loaded locks closed. I was wondering if instead of pulling it out from under the front seat I could go under the hood and disconnect the tube that is running back on the same side thru the firewall and suck on it. Will that work? this will keep the integrety of the vacuum system back thru the cabin to the trunk. BTW When I look at the tubes running thru the firewall they all seem to be clear/yellowing tubes not yellow green and black. Also the tube running under the back seat is black tube not yellow with green stripe.
Well not panicing yet but getting lower on fuel
Tom
-- In mailto:diesel_mercedes%40yahoogroups.com, "Nate" wrote:
>
>
> Remove rear seat , find the yellow plastic tube with the _green_ stripe and pull it out from underneath the _FRONT_ seat , suck on it and the trunk and fuel flap will unlock .
>
> To open only the trunk , turn the key counter clockwise until it's at an angle and _hold_ it there as you push in the key & button , this unlocks vacuum locked trunks .
>
> Then you can *gently* pull the right black plastic trunk side panel inwards enough to slide your hand in , find the fuel flap lock rod and pull it rear wards to unlock the fuel filler flap .
>
> No need to panic .
>
> -Nate
>
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (7) |
| Reply via web post | Reply to sender | Reply to group | Start a New Topic | Messages in this topic (8) |
