I have a 1982 mercedes 240d. Recently my engine started making a ticking sound. Its not extremely loud i didnt notice it till somebody standing outside my car pointed it out. you cant hear it while sitting in the car. It sounds like its coming from the top end specifically the valve cover. Its not a very deep tone like a rod knock it almost sounds like a marble ratteling around in a metal can. It doesnt do it until its warmed up. My first thought was a valve issue. Any help is appreciated.

Could be intermediate shaft / vacuum pump / oil pump drive to intermediate shaft

Make a video if you can - sometimes that helps

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Intermediate shaft? I have only heard of that in a transmission


Also i will try to past a video asap but i have kinda limited internet access

This is the shaft that sits between the timing device and the injector pump (IP)

See

http://www.peachparts.com/shopforum/diesel-discussion/204187-what-particular-causes-vacuum-pump-failure-4.html



For example

...the non turbo OM61X engines have a drive from the intermediate shaft down to the oil pump that also can rattle about. So crank turns - drags chain - chain turns timing device (after turning camshaft) intermediate shaft turns IP and turns oil pump shaft

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

If that is the issue will my timing chain be loose and possibly damaged? I have a video of my car running but it wont let me post it.

also i noticed it doesnt do it at higher rpm's. If im driving then come to a stop and let it idle it takes a minute to start making the noise.

Best way to handle video is to upload to YouTube and then just provide the link to that.

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

There is an unlikely relationship between the bushings in either the oil drive or the intermediate shaft being worn and because of that the timing chain is done for...

...it is more likely that all of the parts have just gotten worn because they have been used.

Tackle one thing at a time.

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

I would also try cracking the injector lines open one at a time. Worn injectors can make some odd noises which appear to be coming from something else.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

How will i know if the injector is bad?

If one of the injectors is worn the ticking should stop once you loosen the nut.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

So while the engine is running loosen that nut on the fuel line? And do this with each cylinder one at a time?

Engine ticking?

"Ve haff vays of making you tock!"

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62 220sb
67 250S
72 280SE 4.5
74 280C
77 300D
82 240D
85 190E 2.3
86 300E RIP 12/28/09
85 300SD
92 300D 2.5
00 E320 Current
Over 1,000,000 miles in Benzes, Since66

....and a whole passel of BMW 2002 and Tii

Yes

Have the valves been adjusted in the last 10k miles?

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'84 190D 2.2 5MT (Red/Palomino) Current car. Love it!
'85 190D 2.2 Auto *Cali* (Blue/Blue) *sold*
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