Mercedes SLK World banner
  • Hey Everyone! Enter your ride HERE to be a part of this months Ride of the Month Challenge!
Status
Not open for further replies.
1 - 13 of 13 Posts

·
Registered
Joined
·
115 Posts
Discussion Starter · #1 ·
My SLK 280 set the flapper valve inoperative code, so I decided to pull the intake manifold to diagnosis the problem. It turns out the problem is a broken vacuum line connector. The broken connector is the one at the front of the intake. manifold that feeds the flapper valve control. Here is what it looks like (the "snaps" that retain it are still in the manifold:



Is this part available? I've poked around and can't find it listed anywhere. If someone has a junk intake manifold, I'd love to buy the part from them. If I can't find one, then I am going to try using epoxy to bond the part I have to the manifold. Any thoughts on whether this will work? An alternate strategy would be to tap the hole for a metal fitting.

The actual mechanism seems to be in good shape, but I wonder if I should replace the rocker while I have the manifold out. The actual flaps aeem to work properly, so I don't think I need anything more than fixing the vacuum hose.

Thanks for all suggestion.

Ed
 

Attachments

·
Founding Member 2006
Joined
·
115,443 Posts

·
Founding Member 2006
Joined
·
115,443 Posts
see it here?

 

Attachments

·
Founding Member 2006
Joined
·
115,443 Posts
or here?

 

Attachments

·
*Registered
2006 SLK280
Joined
·
719 Posts
from my understanding, they come with the new manifold, they don't have separate part number... and we couldn't find anybody selling it. Interestingly, I and another member here also replaced another manifold on his 280 this morning. He made it looks so easy....
 

·
Founding Member 2006
Joined
·
115,443 Posts
Then as nguyenphananh stated above, probably not sold separately
 

·
Registered
Joined
·
115 Posts
Discussion Starter · #8 ·
After further investigation, it seems another member had the same problem. See http://www.slkworld.com/slk-r171-ge...ed-help-part-number-intake-manifold-area.html . His solution was to glue the connector to the manifold, which is what I thought about doing. However, after further consideration, I decided to bite the bullet and order the replacement manifold from Amazon. They have the factory part at a decent price. Given the pain in the rear it is to do the job, I decided to go whole hog and hopefully never have to do it again. And if I do, I'll have some spare parts :)

Thanks for all the assistance.

Ed
 

·
Registered
Joined
·
102 Posts
from my understanding, they come with the new manifold, they don't have separate part number... and we couldn't find anybody selling it. Interestingly, I and another member here also replaced another manifold on his 280 this morning. He made it looks so easy....
Yeah, removing and installing is fairly easy, hour out and hour back in. However, doing it right is another thing.

That fitting in the photos is very subsceptable to breaking. There are two of those, but the one on the passenger side is the most vulnerable to breaking as the attached hose reaches its limit as you're lift out the manifold. The one on the driver's side attaches to a sender that can be removed from its mount, thus preserving that fixture. Bottom line, the plastic gets brittle and breaks. If a piece remains in the manifold, use a drill and then a bolt extractor to get it out. Mine also had a piece break off in the hose and same deal, drill and extract.

I think you're right, I did not get the injectors/rail properly seated, resulting in a leak and lean running on the cylinders involved. I ordered a set of upper and lower injector seals and this time will use some synthetic motor oil to slide them into the old girl.

As to my existing problem of misfiring on cylinders 1, 2, 3 and 4, plus lean running smell from the exhaust, I really doubt that any ignition coils went out during these repair efforts. I didn't touch the coils. I'm sure it has to do with the injectors and I doubt that they went out either during my efforts. So that leaves properly inserting them as you've pointed out. I was wondering whether I got them in properly on the first go around when I had misfires on just cyclinders 1, 2 and 3. Now it has increased to 4 cylinders.

If this solves the problem, then my purchase of the manifold was unnecessary. So I will have the extra fittings and the actuator available.

I guess I've been working more on my boat diesels and truck diesel and really have not come down the learning curve on these modern gassers. Owning Hondas will do that to you. 0:)
 

·
*Registered
2006 SLK280
Joined
·
719 Posts
Good luck Steve.... hope that is all the issues you have. Coils definitely are not the issue (we never touched them). I remember you removed the manifold 2-3 times already. The injector's seal is supposed to be 1 time used only. I also remember we just put the fuel rail in, tied the bolts.... maybe required more attention to seat it in....
Waiting for your result before doing mine...
 
1 - 13 of 13 Posts
Status
Not open for further replies.
Top