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Author Topic: Cambelt jumped a tooth (or more?)  (Read 5533 times)

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GastronomicKleptomaniac

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Re: Cambelt jumped a tooth (or more?)
« Reply #15 on: 24 January 2009, 18:41:51 »
Quote
Have you popped out the coil packs and checked the plugs yet?

Nah, I've had too much on today, I'm going to get everything set up that I need now (tols are in disarray at the moment, having opened the case upside down), and start the job in daylight tomorrow. With buckets of tea.
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Kevin Wood

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Re: Cambelt jumped a tooth (or more?)
« Reply #16 on: 24 January 2009, 18:51:43 »
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What sort of noises is it making?

Kevin

 Honestly, I can't bear to start the engine now, last time I did, it sounded like Keith Moon trapped in a dustbin factory... but I'm a lot more sensitive to sounds from my own car. If it helps, I could take a quick video of it starting and post it on Photobucket? I'm already of the opinion, that if the engine's destroyed, so be it, and no harm in looking further...


That won't be a simple ignition problem. :( I might be inclined to have a peep under the cam belt cover before starting it again to make sure it's timed up accurately and everything is as it should be.


Quote
...(tols are in disarray at the moment, having opened the case upside down)...

I hate it when that happens. >:(

Kevin
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GastronomicKleptomaniac

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Re: Cambelt jumped a tooth (or more?)
« Reply #17 on: 24 January 2009, 19:05:56 »
Quote
Quote
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What sort of noises is it making?

Kevin

 Honestly, I can't bear to start the engine now, last time I did, it sounded like Keith Moon trapped in a dustbin factory... but I'm a lot more sensitive to sounds from my own car. If it helps, I could take a quick video of it starting and post it on Photobucket? I'm already of the opinion, that if the engine's destroyed, so be it, and no harm in looking further...


That won't be a simple ignition problem. :( I might be inclined to have a peep under the cam belt cover before starting it again to make sure it's timed up accurately and everything is as it should be.


Quote
...(tols are in disarray at the moment, having opened the case upside down)...

I hate it when that happens. >:(

Kevin

 Shall I take a quick video and risk possible engine destruction?

 And aye, it's even worse when it wasn't me who did it...
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Re: Cambelt jumped a tooth (or more?)
« Reply #18 on: 24 January 2009, 20:24:47 »
I would check the cam timing and belt / idlers before running it again, TBH.

If it were an ignition issue the worst that could be happening is it missing on a couple of cylinders - so it would run lumpily but not excessively noisily.

Kevin
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Martin_1962

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Re: Cambelt jumped a tooth (or more?)
« Reply #19 on: 24 January 2009, 21:49:07 »
I had a plug go and it sounded horrid.

A previous car lost two and sounded absolutely dreadful
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GastronomicKleptomaniac

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Re: Cambelt jumped a tooth (or more?)
« Reply #20 on: 25 January 2009, 15:01:08 »
OK, I'm into the timing belt area now. Looking at the check marks already tippex'd on the pulleys, the cams seem to line up in the right place... I'm a little confused as to all the notches though?
 I'm now looking at the bottom of the engine, crank pulley, and the notch is sitting in line with a "pointer"... see below for my slightly simplistic explanation.

The pulley immediately to the right of the water pump, the body behind it is cast into a pointer, from memory this means the crank is in the right place, if the top notches line up? I'll take a pic and upload it when I take a lunch break, in about 5 minutes...
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Re: Cambelt jumped a tooth (or more?)
« Reply #21 on: 25 January 2009, 15:09:39 »
Quote
OK, I'm into the timing belt area now. Looking at the check marks already tippex'd on the pulleys, the cams seem to line up in the right place... I'm a little confused as to all the notches though?
 I'm now looking at the bottom of the engine, crank pulley, and the notch is sitting in line with a "pointer"... see below for my slightly simplistic explanation.

The pulley immediately to the right of the water pump, the body behind it is cast into a pointer, from memory this means the crank is in the right place, if the top notches line up? I'll take a pic and upload it when I take a lunch break, in about 5 minutes...
That doesn't sound good, looks like whoever did the cambelt cange hasn't used the proper kit to do it :(
« Last Edit: 25 January 2009, 15:10:14 by Elite_Pete »
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GastronomicKleptomaniac

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Re: Cambelt jumped a tooth (or more?)
« Reply #22 on: 25 January 2009, 15:31:07 »
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Quote
OK, I'm into the timing belt area now. Looking at the check marks already tippex'd on the pulleys, the cams seem to line up in the right place... I'm a little confused as to all the notches though?
 I'm now looking at the bottom of the engine, crank pulley, and the notch is sitting in line with a "pointer"... see below for my slightly simplistic explanation.
That doesn't sound good, looks like whoever did the cambelt cange hasn't used the proper kit to do it :(

 Aye, unless he's used it simply as a quick-check guide.

 Having got to the stage I'm at now, I'd actually be confident to do the belt on a V6  in future, obviously borrowing the locking kit...

 Any idea on whether the pointer lining up with the notch is correct for a quick check, as my vague memory seems to think?

 
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Re: Cambelt jumped a tooth (or more?)
« Reply #23 on: 25 January 2009, 15:50:27 »
There's mark on the crank pulley that should line up with a mark on the bottom of the housing to give you TDC on cylinder 1. Then all the cam markings should line up with their respective markings. Not there are 2 marks on each pulley and you need to select the correct one based on its position. They are numbered 1 to 4 from left to right.

Kevin
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GastronomicKleptomaniac

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Re: Cambelt jumped a tooth (or more?)
« Reply #24 on: 25 January 2009, 16:26:36 »
1, 2, 3 and 4 all line up pretty much perfectly. Where the car is at the moment, I can't get my head down to look at the bottom of the crank pulley - that'll be tomorrow before work...
 At the moment, I'm looking at the pulley and seeing, with the cams in position as stated, a notch pointing at about, ooh, 2-3'o'clock... is there only one mark on the crank pulley?

Cheers again, really is appreciated :y
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Re: Cambelt jumped a tooth (or more?)
« Reply #25 on: 25 January 2009, 18:19:30 »
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1, 2, 3 and 4 all line up pretty much perfectly. Where the car is at the moment, I can't get my head down to look at the bottom of the crank pulley - that'll be tomorrow before work...
 At the moment, I'm looking at the pulley and seeing, with the cams in position as stated, a notch pointing at about, ooh, 2-3'o'clock... is there only one mark on the crank pulley?

Cheers again, really is appreciated :y
You'll need a mirror to see the mark on the crank
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Re: Cambelt jumped a tooth (or more?)
« Reply #26 on: 25 January 2009, 19:45:28 »
At TDC:
Crank sprocket has a line or arrow mark which should be pointing straight down and in-line with a notch in the alloy housing beneath the crank sprocket.
Cam sprockets...marks should line up with notch in cambelt back cover. Sprockets are numbered 1-4 from left to right, so sprocket 1 should have notch 1 lining up. Sprocket 2 has notch 2 lining up etc.
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GastronomicKleptomaniac

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Re: Cambelt jumped a tooth (or more?)
« Reply #27 on: 26 January 2009, 15:43:00 »
First of all, this is the mark I was looking at, and the notch - couldn't get in to take any wider angle shots, but this is the bottom pulley, the mark is at approx 2'o'clock.


And this is the view in the mirror of the bottom half of the crank pulley, with the mirror placed at the bottom of the engine. (I apologise for it being upside down) I can't see any marks, but can see a keyway in the centre of the pulley?



I know, I'm not the most talented photographer... and yes, that is indeed my OH's make-up mirror...
« Last Edit: 26 January 2009, 15:43:43 by PeteG »
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Re: Cambelt jumped a tooth (or more?)
« Reply #28 on: 27 January 2009, 00:04:24 »
Ah, now I see what you are doing.

The crank timing marks are on the toothed belt sprocket, so take the crank aux belt pulley off and you should see them.

As said before, TDC is with timing mark pointing down and lining up with notch in alloy.

Note...these marks are only for indication and to help positioning a new belt. To time properly you need the crank locking tool and the cam sprocket timing gauge.
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GastronomicKleptomaniac

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Re: Cambelt jumped a tooth (or more?)
« Reply #29 on: 27 January 2009, 00:14:01 »
Aha! That's my next task then... ta muchly :y
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