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  #1  
Old 10-10-2002, 09:14 PM
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Talking IP Timing Revisited

Met an old German MB mechanic today and he taught me a very cool way to time my 240D. He used to have a big shop down in or near Palo Alto Ca and is now retired. I mentioned that I never did quite get the timing squared away after I did a timing chain. hd gasget & cam. The car runs good and sounds good but I was never quite sure I had that "drip method" down. Anyway his comment was something like "screw dat drip stuff, I'll show you how to time dat pump der easy way" and it was very slick, if I can explain it. Rotate the engine to the 24 degree mark. Left side of the car facing der pump, there is a fuel line going from the upper left portion of the pump to the fuel filter. Disconnect it at the pump and rig another hose, 1 or 2 feet long, on the banjo fitting and reconnect it back to the pump. Use a clean piece if hose cause your gona blow through it, yes with your lips on it. Now take all the high pressure pipes off. DISCONNECT the vacuum line from the IP. Now pull the little valve out of number one and replace the spring just like in the drip method. Now attach a piece of high pressure pipe with another piece of hose on it 1 or 2 feet long, to number one and place the end in a vodka bottle full of water. (actually we used a canning jar). If your pump is in time the bubbles will stop at 24 degrees when you blow through the hose attached to the pump. If not you adjust accordingly. Now I have seen whats referred to as the bubble method and maybe this is that method and everyone already knows about it but this was news to me so I wanted to pass it along as its very easy and according der "German" much superior to the drip method. We did it with a couple of other pumps on the bench just for fun. Anyway now I feel confidant about IP timing now if I only didn't have this hair loss problem.....
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1985 Euro 300TD 5 spd 220K
1985 Euro 240D 5 spd 130K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
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  #2  
Old 10-11-2002, 07:54 AM
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I've never tried the bubble method but many people say it is the most accurate. I did the drip method on my 240 and 300 and it works perfectly. I also tried the method where you watch the fuel well up in the IP pipe (sometimes refered to as the Baylor method) and I know that method does not work.

I'm not sure why some people have trouble with the drip method. I found that by pumping the hand pump and very slowing turning the crank with a long breaking bar, you will easily see the very abupt point where the fuel goes from a stream to drips. I think some people get all hung up over the drip rate. The drip rate is not that important. What is important is the point where the stream goes from a stream to a drip.

My 240d is now getting 31.5 mpg from 28.5 mpg after the IP timing change. I wish I knew where it was before I started but I dont because I got all screwed up using the Baylor method.

Setting the IP timing solved my "black smoke at idle" problem on by 300D.

Joe
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Old 10-11-2002, 11:12 AM
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240joe

I also tried that Baylor method without success. When I did the drip method it was not clear to me just when the exact point was reached and I never felt quite confident that I had done it as good as it could have been done. Guess its just a matter of which ever way you get used too. With that bubble method there seemed to be two things that I noticed that made it easy for me 1) no messy fuel dripping into a can that I had to hold on to and 2) there was no "gray area", when the bubbles stopped, you are "there". I guess what I am saying is from my perspective as a "new guy" at this, the bubbles were easier for me to comprehend.

Getting 31.5 mpg from 28.5 mpg is quite a nice "payback". I wish I had checked my MPG before the "operation"
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1985 Euro 300TD 5 spd 220K
1985 Euro 240D 5 spd 130K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"
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  #4  
Old 10-11-2002, 11:48 AM
LarryBible
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Sounds interesting, but it also sounds like much more trouble than the drip method. I use the drip method with great success.

I guess the important thing is that you use what works best for you.

Have a great day,
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