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Old 01-29-2020, 04:57 AM
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cmac2012 cmac2012 is online now
Me, Myself, and I
 
Join Date: Dec 2004
Location: Redwood City, CA
Posts: 37,589
Quote:
Originally Posted by ykobayashi View Post
I love going up to Berkeley and seeing all the diesel Benzes driving around. I used to live across from Fat Apples...uhm 30 years ago.

Good luck with the search. I was amazed at getting my 300d back to making power. It wasn’t any one thing that was robbing power. It was half a dozen things each eating a few HP and once I went through it all it finally ran properly.

Putting a boost gauge (just a T, some hose and a cheap air gauge) on my ALDL line gave me an idea just how much boost I was getting. I had a lot of goo on the inlet side of my turbo.
Is that something that needs attention?

Speaking of goo, I pulled the ALDA line from the manifold, that was on advice from this one:

Quote:
Originally Posted by Maxbumpo View Post
This is a great point, the pressure line fitting at the intake manifold and the over-boost control valve can get plugged up with soot, and then you get a sluggish engine. You said you can barely blow through it, to me that means a fail. I'd recommend you remove the fitting from the manifold and spray it out with brake cleaner and maybe push a bit of wire in / out.
Oh man, not sure I'd call it soot, but it was black and residue like, that's certain.



I got the right size drill bit (loose fit) and cleaned the junk out of the long skinny part, then used WD-40 and brake cleaner to clean the rest and the line as well. Blew compressed air through it. Good thing I found that. My fix of the other broken line probably wouldn't have gone so good.

One thing I wonder about is the little relay hub where the lines converge. Tonight, to take off the manifold banjo bolt I took the hub/junction off the firewall as I couldn't see where that hose hooked in. I noticed an electric line coming off of it. I'm curious just what goes on in that little hub thingy.
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1986 300SDL, 362K
1984 300D, 138K
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