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  #31  
Old 08-05-2003, 12:45 PM
azhari
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That's like bleeding the fuel lines of the distributor, isn't it?

Haasman does it with the engine on and cracking one line at a time.

Didn't have the guts to do it that way (dripping fuel/running engine)!:p

Cool setup!
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  #32  
Old 08-05-2003, 01:46 PM
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It gave me a visual way of seeing what the flow was. If you had six different graduated containers you could measure actual volume of each line/injector over a given time period. As for mine, it was obvious that they were not flowing equally.
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  #33  
Old 08-06-2003, 09:30 AM
azhari
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Cap'n

I push down on the air flow plate and I see a pool of fuel on the throttle butterfly valve.

I pull the accelerator cable to clear the pool of fuel.

Next, I push down on the air flow plate a couple of times (don't know if it matters).

I stop, catch a ciggie 20 metres away from the car, and when I look again, I see a pool of fuel on the throttle butterfly valve again.Is this normal?

I checked this against my friends 124, pushing a couple of times against the air flow plate and all...no pool!

Tried to get the fuel distributor off to check for a leak (with all the lines attached) but i couldn't get the cold start fuel line off to access the 3rd torx bolt!

Wanted to get the EHA off but after getting 2 of the torx bolts off, fuell started to spray from the EHA and I lost my nerve!

Tomorrow, I will get her to my friend's MB techie and see if we cna find the leak...if this pooling is not normal, of course.

If this pooling is normal, I am lost!

How's the progress on your car?

Was the EHA leaking fuel thru' or did you not manage to get confirmation on that?
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  #34  
Old 08-06-2003, 10:55 AM
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The problem I have with Capt'n's test procedure is that with the injectors removed, pressure load on the outlet ports of the fuel distributor is about 0. A leak will likely not show itself in this test, where it would occur readily if the injectors were attached.

I'd say your fuel distributor plunger shaft is almost certainly the source of your pooling, and it is safe to say both that this is not normal, and the source of your smoking. There is a post here with pictures of 6 o-rings to the separate distribution chambers of the fuel distributor, if you can find it. I'll bet if you replaced those it would solve your problem. You'd need to find an appropriate material - ordinary Buna-N o-rings won't do it.

Steve
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  #35  
Old 08-06-2003, 11:05 AM
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I have too much going on right now to even look at my car. But if you have a fuel puddle on the top of the throttle plate, visible when you push down the airflow plate, then I'm thinking that you may have a leak around the plunger seal on the bottom of the fuel distributor. Of course this is what I thought on mine too and replaced it only to find the problem was still there. The difference on mine was that the fuel was puddling under the throttle plate in the manifold. The only sure way to know is to unbolt the distributor, leaving the fuel supply lines connected, pressurize the system and see if you have a leak at the plunger. As far as the EHA goes, only a little fuel will leak from it when it is separated from the distributor. Make sure the gas cap on the tank is loosened to relieve it. And buy a good flare wrench to remove those fuel lines and don't risk rounding the fitting off!
Attached Thumbnails
Alright, the fuel distributor plunger ain't leaking, where's the gas going??-flare.jpg  
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  #36  
Old 08-08-2003, 03:40 AM
azhari
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Cap'n

I have read in other posts that some have had success stopping a fuel leak by changing out the fuel distributor O-ring (the one between the FD and the AFM).

Did you do yours?

Does this O-ring really seal off the FD from the AFM?Actually, I honestly can't imagine solving a leak by changing this O-ring.

But if it's a possibility, I wanna take a look at mine!

Your thoughts?
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  #37  
Old 08-08-2003, 09:33 AM
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There is an o-ring between the AFM and the FD but it's purpose is to seal for vacuum. The fuel leak will come from the plunger seal in the center of the bottom of the FD. This is a tricky seal to change because you have to measure the static height of the plunger before removal so that you can put it back where it came from. I'd mke sure that the leak is coming from there before I changed it. I changed mine and it didn't help. See if this helps.My LAST ovp/eha question, I promise!!!!
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