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Search: Posts Made By: Duke2.6
Forum: Tech Help 01-09-2018, 12:40 PM
Replies: 9
Views: 238
Posted By Duke2.6
Yes, the FA should hold full system pressure...

Yes, the FA should hold full system pressure after shutdown. There may be a very slight leak down rate from the FA or pressure regulator, but that should take hours if not days.

When the ignition...
Forum: Tech Help 01-07-2018, 11:58 AM
Replies: 9
Views: 238
Posted By Duke2.6
...could be the fuel accumulator. My experience...

...could be the fuel accumulator. My experience with a leaking diaphragm in the FA was that it caused intermittent hard starting, both cold and hot, and it gets more frequent with time.

There is...
Forum: Tech Help 12-19-2017, 02:42 PM
Replies: 1
Views: 167
Posted By Duke2.6
Ethanol is a cosolvent that allows gasoline to...

Ethanol is a cosolvent that allows gasoline to absorb much more water in solution before the ethanol-water blend drops to the bottom, and the ethanol also reduces the freezing point, so I doubt if...
Forum: Tech Help 12-16-2017, 11:43 AM
Replies: 17
Views: 2,625
Posted By Duke2.6
That four pin device has two temp sensors that I...

That four pin device has two temp sensors that I think are just simple thermistors or maybe small switches. I think one is for the KE system, and I think the other is for the aux. electric fans...
Forum: Tech Help 12-01-2017, 12:18 PM
Replies: 24
Views: 3,444
Posted By Duke2.6
Look at this nearby thread: ...

Look at this nearby thread:

http://www.peachparts.com/shopforum/tech-help/390036-1991-300ce-m104-98-intermittent-start-problems.html

and read post #5

Duke
Forum: Tech Help 12-01-2017, 11:51 AM
Replies: 4
Views: 282
Posted By Duke2.6
Search for a thread started by me: "'Fuel...

Search for a thread started by me: "'Fuel Accumulator Failure Analysis". You don't need a pressure gage. There is a simple test you can perform on the car to determine if the accumulator has a...
Forum: Tech Help 11-29-2017, 01:25 PM
Replies: 3
Views: 226
Posted By Duke2.6
I don't understand why you would need all that...

I don't understand why you would need all that gear. The system is easy to drain and fill with simple hand tools, a funnel, and a couple of lengths of hose or tubing to fit the radiator and engine...
Forum: Tech Help 11-29-2017, 12:33 AM
Replies: 10
Views: 380
Posted By Duke2.6
This is one maintenance job that Mercedes made...

This is one maintenance job that Mercedes made easy. The radiator drain valve has a nipple you can attach a hose to as does the block drain under the exhaust manifold, so you can do the job without...
Forum: Tech Help 11-26-2017, 12:00 PM
Replies: 13
Views: 571
Posted By Duke2.6
60-65 MPH corresponds to the front suspension...

60-65 MPH corresponds to the front suspension natural frequency, and vibration at this speed indicates either a static unbalance condition or out-of round-condition.

The latter can often be...
Forum: Tech Help 10-27-2017, 11:13 AM
Replies: 10
Views: 334
Posted By Duke2.6
A likely cause of such a noise is deterioration...

A likely cause of such a noise is deterioration of the driveshaft center bearing pillow block, which will allow the driveshaft to flop around.

My center bearing and pillow block were replaced on...
Forum: Tech Help 10-11-2017, 12:03 PM
Replies: 20
Views: 718
Posted By Duke2.6
I believe the m/c reservoir on 124s is configured...

I believe the m/c reservoir on 124s is configured like the 201s, and it is very easy to run the rear reservoir dry. You can only see the rear reservoir level at the extreme rear of the res. by...
Forum: Tech Help 10-05-2017, 11:52 AM
Replies: 30
Views: 923
Posted By Duke2.6
No, the oxygenate is ETHANOL, not methanol. No...

No, the oxygenate is ETHANOL, not methanol. No manufacturer has approved methanol because it's corrosive. All California gasoline has 10 percent ethanol by volume, which is the EPA limit, and most...
Forum: Tech Help 10-04-2017, 11:45 AM
Replies: 30
Views: 923
Posted By Duke2.6
Methanol is very corrosive and acetone is a very...

Methanol is very corrosive and acetone is a very strong organic solvent that will attack virtually all organic materials... avoid both!

If you really think you need an "octane booster" because you...
Forum: Tech Help 07-07-2017, 01:59 PM
Replies: 14
Views: 493
Posted By Duke2.6
"Ram air " is a myth, as shown in your...

"Ram air " is a myth, as shown in your attachment. I believe that formula only applies to an isentropic diffuser, and automotive ambient air intakes are far from that, but the intake geometry on a...
Forum: Tech Help 05-24-2017, 07:22 PM
Replies: 11
Views: 418
Posted By Duke2.6
A few years ago my 201 parking brake became...

A few years ago my 201 parking brake became ineffective at full extension of the lever (mounted between the seats), so I followed the service manual procedure - slackened the cable, adjusted the...
Forum: Tech Help 04-22-2017, 03:22 PM
Replies: 10
Views: 1,279
Posted By Duke2.6
PBR (formerly Repco) Deluxe Advanced. Ceramic...

PBR (formerly Repco) Deluxe Advanced. Ceramic based, they have very little dust (which is light colored), don't squeal, maintain OE pedal effort, long life, and easy on the rotors.

I've had them...
Forum: Tech Help 04-15-2017, 01:36 PM
Replies: 5
Views: 274
Posted By Duke2.6
The aux fans engage at low speed via the AC high...

The aux fans engage at low speed via the AC high pressure switch. High speed engages if the coolant temperature exceeds 105C (about 231F) regardless of AC high side pressure.

From what you say it...
Forum: Tech Help 04-10-2017, 02:22 PM
Replies: 4
Views: 319
Posted By Duke2.6
It's easy to run the rear res. dry while...

It's easy to run the rear res. dry while bleeding. The only way to see the rear res. level is to look at the inside very rear of the res - about the last quarter-inch. In addition to filling the...
Forum: Tech Help 02-14-2017, 07:02 PM
Replies: 14
Views: 501
Posted By Duke2.6
They're little green square shaped "bars" that...

They're little green square shaped "bars" that are basically poison... bought them at Home Depot years ago, but haven't seen them lately. They're probably now illegal.

Duke
Forum: Tech Help 02-14-2017, 01:53 PM
Replies: 10
Views: 538
Posted By Duke2.6
By the early nineties emission control was built...

By the early nineties emission control was built into the fuel control system and the only add on devices were the EGR and the air pump, which is only active during the first few minutes of operation...
Forum: Tech Help 02-14-2017, 01:33 PM
Replies: 14
Views: 501
Posted By Duke2.6
The biggest storage risk is RODENT DAMAGE! ...

The biggest storage risk is RODENT DAMAGE!

I've been storing my '88 190E 2.6 for 5-7 months per year for the last 15 years, and have never had any problems.

I have "mouse bars" in the corners...
Forum: Tech Help 02-13-2017, 05:06 PM
Replies: 12
Views: 523
Posted By Duke2.6
Your symptoms match what happens if the fuel...

Your symptoms match what happens if the fuel accumulator diaphragm cracks. Search for a thread started by me "fuel accumlator failure analysis". The is a simple test you can run to test for an...
Forum: Tech Help 01-28-2017, 11:57 AM
Replies: 9
Views: 425
Posted By Duke2.6
Good compression... no smell... no smoke. M103s...

Good compression... no smell... no smoke. M103s tend to consume more oil than most. After the dealer rebuilt my head on warranty at just under 50K including the latest valve seals, which were...
Forum: Tech Help 12-10-2016, 10:47 AM
Replies: 11
Views: 371
Posted By Duke2.6
...as I decribed and you copied and pasted in...

...as I decribed and you copied and pasted in your original post. I believe it's very common for guys to empty the rear res. because they don't know how to read the level. Its tricky!

I siphon...
Forum: Tech Help 12-04-2016, 02:31 PM
Replies: 39
Views: 1,427
Posted By Duke2.6
Oil consumption indicates valve seals, but at...

Oil consumption indicates valve seals, but at that mileage the guides may be worn too, which would require rebuilding both heads, and it would be a good idea to replace all the exhaust valves since...
Forum: Tech Help 11-30-2016, 04:36 PM
Replies: 28
Views: 1,367
Posted By Duke2.6
...means nothing without actual data like gage...

...means nothing without actual data like gage readings. So...?

The thermostat merely establishes a MINIMUM operating temperature. The maximum is established by the fans, which are all engaged at...
Forum: Tech Help 11-28-2016, 03:23 PM
Replies: 8
Views: 402
Posted By Duke2.6
Check wire resistance... should be about 2K ohms...

Check wire resistance... should be about 2K ohms due to the RFI resister inside the plug boot. Wiggle them around while checking and verify that resistance reading is in spec and does not change....
Forum: Tech Help 11-24-2016, 01:56 PM
Replies: 28
Views: 1,367
Posted By Duke2.6
The aux. electric fans engage at high speed at...

The aux. electric fans engage at high speed at 105C (about 221F) coolant temp. and disengage at 100C. In addition they are activated at low speed by the AC system high pressure switch if not already...
Forum: Tech Help 11-12-2016, 12:13 PM
Replies: 13
Views: 470
Posted By Duke2.6
I've got 15 years on a $40 Johnson Controls 26R...

I've got 15 years on a $40 Johnson Controls 26R (Autozone) that dates to September, 2001. I swap it between the '88 190E 2.6 (winter car) and '91 MR2 (summer car).

While the cars are in service I...
Forum: Tech Help 10-24-2016, 02:33 PM
Replies: 15
Views: 667
Posted By Duke2.6
[QUOTE=w123fanman;3647697]I removed the rubber...

[QUOTE=w123fanman;3647697]I removed the rubber line from the outside side of the fuel accumulator and pulled vacuum on it and got 40ml of gas in my catch can. It then held vacuum fine. I think it is...
Showing results 1 to 30 of 500

 
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