Worn out cam lobes on JTD 1.9 8v (pics) - Alfa Romeo Forum
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159 1.9 JTD 2005

Worn out cam lobes on JTD 1.9 8v (pics)

Hi all,

First post. I've had my 2005 156 JTD 1.9 8v for a year and a half now and been pretty happy with it overall, however it has developed the following problem:

- Reduced power, almost a misfire with only partial compression of 2nd cylinder
- Loud knocking
- Black smoke on acceleration

I removed the cam cover to see what might be causing the issue and have supplied some pics at finding the second cylinder cams worn down. I was wondering if anyone could tell me the likely cause of my worn cam lobes on the 2nd cylinder?

Here is some info about the car:
- Oil change 6 month ago, although car only used daily for 4 of those months due to job redundancy
- Head rebuilt 15K ago by a reputable Alfa specialist
- Oil and coolant levels normal

Questions:
Is it likely to be a slipped cam belt?
Is a problem with the grade of oil used at last change? (as was suggested by a local mechanic)
Blocked oilway?
Sticking valve?
Will the worn metal be a serious cause for concern to the rest of the engine (as had to drive it home for 30 miles or so).
Is this a new head or a repair existing head with new camshaft and lifters job?

I'd appreciate any thoughts or stories of similar experiences.

Thanks for your time
Attached Images
File Type: jpg Camlobe1.jpg (57.1 KB, 79 views)
File Type: jpg IMAG0276.jpg (32.8 KB, 64 views)
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Quote:
Originally Posted by RD130 View Post
Hi all,

First post. I've had my 2005 156 JTD 1.9 8v for a year and a half now and been pretty happy with it overall, however it has developed the following problem:

- Reduced power, almost a misfire with only partial compression of 2nd cylinder
- Loud knocking
- Black smoke on acceleration

I removed the cam cover to see what might be causing the issue and have supplied some pics at finding the second cylinder cams worn down. I was wondering if anyone could tell me the likely cause of my worn cam lobes on the 2nd cylinder?

Here is some info about the car:
- Oil change 6 month ago, although car only used daily for 4 of those months due to job redundancy
- Head rebuilt 15K ago by a reputable Alfa specialist
- Oil and coolant levels normal

Questions:
Is it likely to be a slipped cam belt?
Is a problem with the grade of oil used at last change? (as was suggested by a local mechanic)
Blocked oilway?
Sticking valve?
Will the worn metal be a serious cause for concern to the rest of the engine (as had to drive it home for 30 miles or so).
Is this a new head or a repair existing head with new camshaft and lifters job?

I'd appreciate any thoughts or stories of similar experiences.

Thanks for your time
I think you talked to me about this today ?

Head was not shimmed correctly when refitted(possibly) , the rest of the engine should be OK as these 8V engines are very strong

Basically fixable

Ned
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(Post Link) post #3 of 3 Old 24-04-12 Thread Starter
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Join Date: Nov 2010
Location: United Kingdom
County: Buckinghamshire
Posts: 2

Member car:

159 1.9 JTD 2005

Hi Ned,

Yes it was me, thanks for your help (again). I'm pretty relieved that I’m not going to have to change the whole engine now. Was considering the bottom end as I took it to a local mechanics where three of them mulled over and decided it was a bottom end failure. Glad I checked really.

Thanks for the suggestion, I guess best thing is to get the head off and check the damage. I just wanted to cover all causes to ensure it didn’t do the same again once I’d repaired it.

Cheers
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cam , cam or timing , cylinder , jtd , lobes , oil engine pressure low , pics , worn

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