The head was a rebuilt head. I am going to tell mechanic to do the injector swap and see what that will do.

__________________
Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel

I'll bet something's wacked with the IP timing.

Thanks
David

__________________
_____________________________________________

2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

_____________________________________________

300sdlguy,

I don't think its IP timing. If it was, all the cylinders would not be running right. You can have 4 cylinders timed right 2 cylinders can't be out of time.

Exchanging injectors is prudent way to start.

If the miss firing doesn't move with the injectors, its either IP injector or compression (likely valve) problems. So then a compression test would be prudent. Actually, when the injectors are switched would be a good time to test the compression thru the injector holes. That would give a good comparison comparison between the 2 cylinders that don't fire and 2 that do.


P E H

It appears the previous mechanic somehow broke the camshaft, at it was this that was causing the two rear cyl's not to function. I will probably have to sue for the damage, and at this point it probably not worth it, so another $875 the repair.

__________________
Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel

Wow. This is not surprising if they don't know how to remove and reinstall it. It's very long and subject to fracture if not loaded and unloaded evenly.

Was it fractured completely behind cylinder #4?

Where does $875.00 come from? How much is the cam??

A4000-32083 Camshaft Laso IN STOCK $291.43

Throw in a $21 valve cover gasket and maybe a set of cam bearings plus an hour+/- labor.

__________________
1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Even give them 2 hours labor.

Shouldn't be more than $500.00.

Small claims court......$875 dollars is worth the time...and token cost.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Maybe his mechanic is buying parts from the dealer and then marking them up.

I bet from the dealer a cam is $400, maybe it is better is Laso any good?

__________________
1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

The mechanic should not be charging any more than M/B "list". He buys them at a discount from M/B.

Even at $400, the total tab should be $600. or so.

I haven't gotten the breakdown yet. Do you think there might have been any valve damage for the few minutes it was run each time to do diagnostics on it with this broken cam?

__________________
Mercedes Fleet:
2004 CL600 Designo Espresso SPORT
2004 S600 Designo Espresso SPORT/Lorinser Pkg.
1999 S320
1988 300TE
1972 280SEL 4.5
Diesel Fleet:
2014 GL350 Blutec
1987 300SDL Blk/Blk 4 place seating #18 head
1987 300SDL Smk Slv/Burgangy #17 head
1986 300SDL Blk Pearl/Palomino #14 head w/ 280K
1984 Lincoln Mark VII Fact BMW Turbo Diesel

depends on if the tail of that broken cam had held any valves open, its possible.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Wow, that opens up a scary can of worms. How much damage (other than to the valve itself) would be done by a hung valve? Would the cam be heavy enough (pushind down on the valve) that it would do damage to the piston, or would the piston simply push it up out of the way? I guess it might depend on when exactly the cam quit turning.

__________________
Keep everything as simple as possible-but no simpler--Albert Einstein

I don't mean the weight of the cam holding open a valve but a lobe of the cam holding a valve open at the point it snapped...a likely scenario but one that can be easily seen with the valve cover off.... not hard to prove damage however...a leakdown test will prove that...a bent of damaged valve will dump a large amount of the air either out the exhaust or out the intake which ever is damaged...if it sends your oil fill cap into orbit its time to do some rectal probing of the mechanic with the larger part of the cam.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
---------------------
Section 609 MVAC Certified
---------------------
"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

I guess I should have said weight (or pressure) of the lobe of the cam. Since it was no longer attached to anything, I was curious if it would still hold down with enough force to really do major damage or just get pushed up out of the way by the valve when the piston hit it. I was thinking specifically under the condition of just turning over with the starter.

__________________
Keep everything as simple as possible-but no simpler--Albert Einstein