Fuel pump question - Mercedes-Benz Forum

 
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post #1 of 9 (permalink) Old 06-17-2011, 03:35 PM Thread Starter
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Fuel pump question

My 98 C230 Died in route home today and I need some info.

When the car shut down and I got to the shoulder, I found gas leaking from around what I assume is the fuel pump?(at right rear wheel behind a cover)

My questions are would a hose leak and accompanying pressure loss cause the car not not restart or is the fuel pump gone.

Thanks,
Griff
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post #2 of 9 (permalink) Old 06-17-2011, 03:49 PM
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Originally Posted by griffedi View Post
My 98 C230 Died in route home today and I need some info.

When the car shut down and I got to the shoulder, I found gas leaking from around what I assume is the fuel pump?(at right rear wheel behind a cover)

My questions are would a hose leak and accompanying pressure loss cause the car not not restart or is the fuel pump gone.

Thanks,
Griff
You could have an emission's problem, most likely from your description a little plastic valve at the bottem of the tank is what is causing the problem. Once the diaphram is gone in it, it will fill the charcoal canister with gas and over flow out of the overflow tube. Which is under the plastic inner finder cover at the back.


However, it could just be a bad clamp on a fuel line.
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post #3 of 9 (permalink) Old 06-17-2011, 05:25 PM Thread Starter
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Would that prevent the fuel pump from running? After pulling off to the side, I did not hear the fuel pump kick on with the ignition?

Also, what is involved in repairing/replacing the valve?

Thx
Griff
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post #4 of 9 (permalink) Old 06-18-2011, 10:45 AM
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Would that prevent the fuel pump from running? After pulling off to the side, I did not hear the fuel pump kick on with the ignition?

Also, what is involved in repairing/replacing the valve?

Thx
Griff
I hate to be the one to say this, but. I know your coming here hoping to a majic word and it will all be better. You wont find that anywhere. Diagnosis over the internet is a hit or miss situation, it could be this or that, but without a qualified mechanic looking at it, it's a guessing game. The only hope you have is that you KNOW it's a fuel system issue. If you have the test quipment, you can narrow it down quickly.

Since this site might be the only one you will get an honest answer, here we go.

No cost:

Make sure there is gas in the tank.
Check the fuse for the pump.
Check for hose leak's. Vacuum and fuel.
Check gas cap seal for weathering. (cracked and dry seal).
Check fuel pressure (at nipple on fuel rail).
Check charcoal canister for fuel saturation.

If you make sure of all this, and it check's out ok, we can move on.


Im sure if you had a way to show the area from where the fuel was dripping, that would help.


When you ask a question over the internet you have to be prepared to produce pictures and answer question's. That is if you want the best answer.

And last of all, if you feel you an not go any further at anytime, take it to the mechanic.
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post #5 of 9 (permalink) Old 06-18-2011, 12:59 PM Thread Starter
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Originally Posted by Mercedes mechanic View Post
I hate to be the one to say this, but. I know your coming here hoping to a majic word and it will all be better. You wont find that anywhere. Diagnosis over the internet is a hit or miss situation, it could be this or that, but without a qualified mechanic looking at it, it's a guessing game. The only hope you have is that you KNOW it's a fuel system issue. If you have the test quipment, you can narrow it down quickly.

Since this site might be the only one you will get an honest answer, here we go.

No cost:

Make sure there is gas in the tank.
Check the fuse for the pump.
Check for hose leak's. Vacuum and fuel.
Check gas cap seal for weathering. (cracked and dry seal).
Check fuel pressure (at nipple on fuel rail).
Check charcoal canister for fuel saturation.

If you make sure of all this, and it check's out ok, we can move on.


Im sure if you had a way to show the area from where the fuel was dripping, that would help.


When you ask a question over the internet you have to be prepared to produce pictures and answer question's. That is if you want the best answer.

And last of all, if you feel you an not go any further at anytime, take it to the mechanic.
I am not an idiot or a child. So, I am not look for a "magic word" to make it all better. I am looking for general suggestions from people that have been there done that. I have poor choice of a Mercedes repair manual which I intend to remedy in the next week or two but, since I travel to my work I was hoping for suggestions that would allow me to zero in on the problem and get to work out of town on Monday.

If I needed an arrogant attitude from an expert, I would go to the dealership.

If you don't want to advise people with less experience than yourself don't. But, if you do, try doing it with a bit of humility.
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post #6 of 9 (permalink) Old 06-20-2011, 09:28 AM
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I am not an idiot or a child. So, I am not look for a "magic word" to make it all better.
I think that you are... otherwise you would have done the checks suggested and reported back accordingly. That's the way it works here. There's no need to get your panties in a knot especially when:

1) you provided minimum information on your problem. ("car shut down", "gas leaking").
2) you clearly know little about your car ("I assume that it is the fuel pump").
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post #7 of 9 (permalink) Old 06-20-2011, 09:53 AM
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Agreeing with keyhole. I don't see anything arrogant about Mercedes mechanic's response and it looks like good advice. The only thing I might add is to search around (or ask) on your native C-Class forum.

Mercedes Benz - Das beste oder nichts!
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post #8 of 9 (permalink) Old 06-21-2011, 06:19 PM Thread Starter
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I have no issue with the suggested list of things to check, it is a solid list and I intend to use itwhen I return home from my business trip.
. My issue and comment had to do with the intro to the suggested checks
Perhaps my statement of arrogant was overboard but an intro of:
"I know your coming here hoping to a majic word and it will all be better. ".
That my good people is judgmental.
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post #9 of 9 (permalink) Old 06-21-2011, 06:49 PM
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I could have said any number of comment's right now, I hope you get it fixed.













Fuck that, you need a lesson in manner's.

First of all who are you? Who are you to say that anything I said was in a manner of disrespect? Hundreds upon hundred's of one-timer's come here and ask a question, do they alway's get their answer's, no. Do people try to help them?, yes.

What makes you think that you are any more special then any other person here? What you shit gold? ruby's? diamonds? You say I was being judgemental?

It's a two way street on taking it to the dealer, I'm sure they don't want to see you either, you're probably on the "black list" anyway.

Here is the best piece of advice I didn't give you the first time, I will try to say it in the most humble way I can.

"Go take your crazy somewhere else, we're all full here"
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