No challenge at all once you take them to court...
-Curt
From: Larry Turner via Mercedes <mercedes@okiebenz.com>
To: Curley McLain via Mercedes <mercedes@okiebenz.com>
Cc: Larry Turner <l02tur...@comcast.net>
Sent: Monday, January 30, 2017 8:57 AM
Subject: Re: [MBZ] My 124 is idling rough (91 300D 2.5Turbo)
Thanks Curley -
See my previous post. I plan to re-test to make sure I can repeat
the results. Getting this very small shop to pay for a new/rebuilt IP +
a rental car will be a challenge IMO. Hindsight is always 20/20 - I
never should have taken the MB there.
Larry
On 01/27/2017 4:24 PM, Curley McLain via Mercedes wrote:
> If # 3 is leaking noticeably less fuel than the others, you have
> identified the problem. They screwed up your pump! You should demand
> that that shop FIX IT. The fix is to either provide you a rebuilt IP
> or pay to have your IP rebuilt, and a rental car while yours is down.
>
> Repeat the test. It should only take 1/3 to 2/3 turn to get the fuel
> to squirt out and determine which cyl is weak. If you loosen #3 and
> the idle does not get as rough as when you loosen any other that is
> the culprit.
>
> If #3 is indeed pumping noticeably less than the other 4, there is NO
> NEED to remove the injectors.
>
> If #3 seems to pump the same volume as the others, then the next step
> would be to determine the weak cyl and they swap 2 injectors to see
> if the problem moves.
>
> Taking out the nozzle holder does not require a special tool you need
> a 1 1/16" deep socket with the splines cut all the way up. Crapsman
> used to be the easy way to find one. I am not sure if the current
> stuff is still the same.
>
>> Larry Turner via Mercedes <mailto:mercedes@okiebenz.com>
>> January 27, 2017 at 1:07 PM
>> Thanks Curley. You're talking about removing the Injectors and
>> that's something I have never done (never needed to til now).
>>
>> I have to decide how I want to proceed.
>>
>> BTW, before I learned the fuel lines were self bleeding, I cracked a
>> couple of lines (maybe all of them) to see if I was getting fuel to
>> the Injectors. I noticed #3 acting different than the others. The
>> others squirted fuel from the threads (depending on how much I
>> loosened the injectors) . So so while #3 might be a good place to
>> start I need to repeat that process to confirm #3 has a weak stream
>> of fuel.
>>
>> Let's say I have #3 definitely acting suspiciously - producing a
>> dribble of fuel after loosening the nuts 1 or 2 full turns - which
>> ever amount produces a good flow of fuel from the others. If #3 is
>> showing a reduced amount of fuel getting to the Injector, I assume I
>> have 2 options : having the Injectors tuned up/serviced as indicated
>> my Max, or replaced with a rebuilt Injector? Are those my options?
>>
>> I have to decide how to have the work performed - I may be forced to
>> R&R the Injectors myself and either install a new one or have this
>> one tuned up. If that happens I'll need to get a lot more info about
>> what is involved with R&R'ing the injectors. Plus I'll need to
>> learn more about the special tools required. But we can address that
>> later.
>>
>> Larry
>>
>>
>>
>>
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>> Curley McLain <mailto:126die...@gmail.com>
>> January 26, 2017 at 6:05 PM
>> If you have already changed the copper seals, springs and orings, and
>> it still idles rough, it is time to crack the injector lines and
>> determine which cyl is weak. You need the heat shields because when
>> you remove an injector holder, you are supposed to replace the heat
>> shield (seal) between the injector nozzle and the prechamber. For
>> diagnosis, you can surely get by with changing the nozzle holders and
>> leave the old heat shields in. I have done it and seen injection
>> experts do it too. If you need to clean/adjust/replace and
>> recalibrate the nozzles, then you definitely put new heat shields in
>> at that time. If the problem proves to be the IP, then you can buy
>> a couple of heat shields and replace the ones you messed with.
>>
>>
>> Larry Turner via Mercedes <mailto:mercedes@okiebenz.com>
>> January 26, 2017 at 1:48 PM
>> Thanks Curley,
>> Which heat shields are you suggesting? (602 engine)
>> So you think the problem might be in the injector?
>>
>> I won't do the above til I do the one at a time you mentioned.
>>
>> Larry
>>
>>
>>
>>
>> _______________________________________
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>>
>> Curley McLain <mailto:126die...@gmail.com>
>> January 26, 2017 at 1:26 PM
>> 1. Crack the injector lines at the injector one at a time to
>> determine which cyl is weak. Make note of the weak cyl number. (Wrap
>> a rag around the tube to lessen the fuel bath)
>> 2. Buy 2 or more heat shields.
>> 3. swap a strong injector with the weak one.
>> 4. Repeat step 1. a: If the weak cyl moved, get a new set of
>> nozzles calibrated and install.
>> b: If the weak cyl is the same, take it
>> back to the same shop, explain what you did, and tell them they owe
>> you a rebuilt pump. Install it yourself, or get someone COMPETENT to
>> install it.
>>
>>
>> Larry Turner via Mercedes <mailto:mercedes@okiebenz.com>
>> January 26, 2017 at 12:56 PM
>> Hi gang,
>>
>> Dropped the car off at a shop to fix a oil leak. (This may be
>> old news) The leak was coming from one of the delivery valves. After
>> replacing the DV O-rings I picked the car up and have had it for
>> about a week. The leak is gone but the car runs terribly. Like
>> it's running on 4 cylinders. I bought new o-rings and redid them.
>> No change. It still runs bad. I re-did the o-rings twice with no
>> change. Either I'm doing something basic wrong or one of the valves
>> dropped.
>>
>> I'm trying to decide what to do next.
>>
>> Thoughts?
>>
>> My wife is ready to buy a new car. I plan to call the shop but have
>> very low expectation of them doing anything.
>>
>> When this all started I talked to this list and got your advice for
>> rebuilding the DVs. I followed the procedure sent to me by
>> Curley. It was a Very straight-forward and easy to follow procedure.
>> (Thanks again Curley)
>>
>> I can see the shop doing it wrong, This area isn't big on foreign
>> cars so the shop who did the work probably works on more Fords and
>> Chevy's than MBs. wise I can see me doing it wrong once but not
>> twice! I tend to be pretty careful when working o something like the
>> Inj,
>>
>> What to do, what to do......?
>>
>> Any ideas or thoughts?
>>
>> LarryT.
>>
>>
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>>
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>
> _______________________________________
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>
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>
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>
>
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