Why the sudden poor running of the engine?

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

That is what I'm sitting here wondering.

How many miles are on the car?

__________________
Jim

That was my thought. Time for the OP to buy a lottery ticket.

OP. Don't simply reset the cam timing without checking and dealing with the tensioner. It should be a ratcheting tensioner and will have to be reset.

__________________
2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

Recap- I have no idea why it all of a sudden started running poorly. While checking various things I decided to check the timing chain and it looks just fine, has tension, no broken or flapping parts. The timing showed 20 degrees off which shocked me because it ran afterwards, albeit poorly. At the suggestion of another poster that the timing pointer may just be wrong I checked the IP timing and found it was also offset by the same 20 degrees. So now I'm supposing the timing didn't jump at all and there is some other explanation for the sudden change in operation. Next step is checking the lift pump pressure and compression.

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'82 300D - Light Ivory, 2nd Owner (Back in the wind April 2013!)

'95 E300D - White, grey interior. (Suffering from stuck/broken glow plugs)

Deuteronomy 22:4-
"Thou shalt not see thy brother's ass or his ox fall down by the way, and hide thyself from them: thou shalt surely help him to lift them up again."

Check the movement and operation of the dampers in the intake manifold.

__________________
Jim

That was one of the first things I checked. I pulled the crossover tube and started it up to eliminate the flaps and EGR valve as a potential problem. It ran exactly the same.

__________________
'82 300D - Light Ivory, 2nd Owner (Back in the wind April 2013!)

'95 E300D - White, grey interior. (Suffering from stuck/broken glow plugs)

Deuteronomy 22:4-
"Thou shalt not see thy brother's ass or his ox fall down by the way, and hide thyself from them: thou shalt surely help him to lift them up again."

A distant memory for me is that the timing spec for the engine is something like 14 deg ATDC. +5 or so deg may just be chain stretch.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Bad fuel.

__________________
Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO

^x2

Did you refuel shortly before it happened?

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Jim

Nope. This was a long distance trip and I had fueled up the day before and gone at least five hundred miles before it started. Thinking that maybe I had sucked some goo off of the bottom of the tank I changed the spin on fuel filter and checked the primary filter on the next fill up.

__________________
'82 300D - Light Ivory, 2nd Owner (Back in the wind April 2013!)

'95 E300D - White, grey interior. (Suffering from stuck/broken glow plugs)

Deuteronomy 22:4-
"Thou shalt not see thy brother's ass or his ox fall down by the way, and hide thyself from them: thou shalt surely help him to lift them up again."

Sudden air leaks on these lines is common.
1995 E300 D Plastic injection pump lines, OM606.910

Delivery valve seal or O-ring failure is also common.
OM60_series IP delivery valve reseal

Warning ALL Diesel Owners
http://www.peachparts.com/shopforum/diesel-discussion/309367-warning-all-diesel-owners.html#post2841158

Bad smelling fuel, what to do
bad smelling fuel, Gag, gasp, choke

Algae/Fungus fixation...
Algae/Fungus fixation... - PeachParts Mercedes ShopForum

Biobor, what is it, why do I need it???
Biobor, what is it, why do I need it??? - PeachParts Mercedes ShopForum

Filters, Fungus, Biocide, etc.
Filters, Fungus, Biocide, etc. - PeachParts Mercedes ShopForum

Algae Clogged Filter Pic StarTron WORKS !
Algae Clogged Filter Pic StarTron WORKS ! - PeachParts Mercedes ShopForum



I hope it has nothing to do with this thread.
Vacuum Pump Rebuild Thread


.

__________________
ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

That is the injection timing - the cam timing is 0 degrees.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

In the course of earlier troubleshooting I ran the car from a jug of fuel to bypass the tank, the fuel in it, the tank screen, and the supply lines. Then ran some diesel purge through it and that didn't help. Over the weekend I rigged up a test pipe in order to perform the lift pump volume and pressure tests and the pump is working well above specifications. At this point I am confident there is no supply side fuel problem and am very happy that I ran the tests instead of ordering a lift pump and relief valve that I didn't need.

I have the splined delivery valve socket on order and when that gets here I'll check, clean, and replace the seals on those.

Also on the agenda is seeing if I can make the injector adapter from my compression tester fit by pulling the valve cover and removing the injector and the well around it.

In the meantime my girlfriend has been nice enough to let me borrow her BMW M Roadster. Not a very practical car but a blast to drive. My daughter has striclty prohibited me from pressing the 'fun button' a.k.a. the button that disables the automatic skid control.

__________________
'82 300D - Light Ivory, 2nd Owner (Back in the wind April 2013!)

'95 E300D - White, grey interior. (Suffering from stuck/broken glow plugs)

Deuteronomy 22:4-
"Thou shalt not see thy brother's ass or his ox fall down by the way, and hide thyself from them: thou shalt surely help him to lift them up again."

Got any pictures?

__________________
Jim

Not handy, it's 2000 in Imola red. The one in this ad M Roadster Buyers Guide - Sale Listings - 2001 BMW M Roadster - Imola Red 2 over Imola Red & Black Nappa looks just like it.

__________________
'82 300D - Light Ivory, 2nd Owner (Back in the wind April 2013!)

'95 E300D - White, grey interior. (Suffering from stuck/broken glow plugs)

Deuteronomy 22:4-
"Thou shalt not see thy brother's ass or his ox fall down by the way, and hide thyself from them: thou shalt surely help him to lift them up again."