Pug 106 1.5 diesel (TUD5) Broken camshaft

All

Some advise needed!

As the Subject line states, I've got a 106 with a broken camshaft.

the car had been running fine, takes about 4 seconds of cranking when cold to start it up. Went to start it up couple of days ago and it cranked for about 1-2 seconds then a sound like something letting go and the engine cranking noise going much quieter. I stopped immediately thinking the cambelt had just snapped .

checked the cambelt, it was in one piece, so had another go at starting. cranked again for 2-3 seconds and another noise. This time I notice the center camshaft bearing cap has snapped in two.

After taking the cover off, not only has the cap broken (and bent out the studs that hold it down) but the shaft has snapped between cylinder 1 and 2.

Question is, how much damage has been caused? I've got another car, so transport is not a problem, and I'd like to have a go a fixing it myself.

Will valves have been bent? would I be advised to remove the head and check it out or put on a new camshaft and see what happens? I'll obviously have to re time up the belt.

Whilst I'm no expert, I've got time on my hands and am keen on the challenge and to learn - but not if it's an expensive job. The car only cost £500 9 months ago, so I don't want to spend much on it.

Thoughts anyone?

Many thanks

Steven

Reply to
Steven
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All

Some advise needed!

As the Subject line states, I've got a 106 with a broken camshaft.

the car had been running fine, takes about 4 seconds of cranking when cold to start it up. Went to start it up couple of days ago and it cranked for about 1-2 seconds then a sound like something letting go and the engine cranking noise going much quieter. I stopped immediately thinking the cambelt had just snapped .

checked the cambelt, it was in one piece, so had another go at starting. cranked again for 2-3 seconds and another noise. This time I notice the center camshaft bearing cap has snapped in two.

After taking the cover off, not only has the cap broken (and bent out the studs that hold it down) but the shaft has snapped between cylinder 1 and 2.

Question is, how much damage has been caused? I've got another car, so transport is not a problem, and I'd like to have a go a fixing it myself.

Will valves have been bent? would I be advised to remove the head and check it out or put on a new camshaft and see what happens? I'll obviously have to re time up the belt.

Whilst I'm no expert, I've got time on my hands and am keen on the challenge and to learn - but not if it's an expensive job. The car only cost £500 9 months ago, so I don't want to spend much on it.

Thoughts anyone?

Many thanks

Steven

Reply to
Steven

Throw it away, it is scrap, it is not particularly easy to work on either.

I cannot imagine quite what has caused your failure, unless the belt has lost some teeth , but continued to turn while mistimed, leading to a valve meeting piston, etc.

mrcheerful

Reply to
mrcheerful

At the very least the heads scrap. If you can pick one up at the scrappys for £50 it might be worth fixing, although all the broken cams I've seen where caused by failed oil pumps, in which case it's scrap.

Reply to
Duncanwood

As others have said, the heads scrap. If the cam bearing cap has snapped, they cannot be replaced (when the heads made, the caps and head are bored as a complete unit).

Reply to
Moray Cuthill

Thanks for the feedback all. I'll see if I can get a cheap head and give it a whirl.

Thanks

Steven

Reply to
Steven

Take th eold one off first & check the bottom ends not scrap, e.g. valve head scoring the cylinder

Reply to
Duncanwood

How much contact/scoring is acceptable? is a little OK? or any marks and the bottom end is scrap?

Thanks

Steven

Reply to
Steven

It'll probably have visible vertical lines anyway, if you can feel any vertical lines with your fingernail or there's dents in the wall then it's probably had it. If it was fine before & the valve heads didn't break then it'll be the same afterwards, unless the oil pump failed.

Reply to
Duncanwood

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