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Messages - ianrobbo

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1
Omega General Help / Re: URGENT help needed
« on: 02 March 2007, 10:05:22 »
Remember those Cortinas & early Sierras with the OHC Pinto engine, the camshaft bearings went on those regularly, they'd drive down the road sounding exactly like that.

Not knocky enough for bottom end (for me), my money's on camshaft.

Could be a broken valve spring? (Mention that one through recent bitter experience!)

2
Omega General Help / Re: I did my cam cover gasket today!
« on: 02 January 2007, 15:47:16 »
Good job!

Did mine too just a few days before Christmas, and was surprised at how much better the engine ran without oil in the plug wells! (Having said that I changed the leads and plugs too).

3
Omega General Help / Re: Rust spots....
« on: 20 December 2006, 14:02:38 »
Your car is very young, I'd agree with you that it's not right. I don't see how they just dismiss it if you kept the anti-corrosion warranty stamps up to date.

If I were you (and I've never had a car that new so I'm not an authority!), I'd start making a bit of a nuisance of myself at both your local dealers and Vauxhall headquarters, with plenty of letters, e-mails & phonecalls.

So how often does one get stonechips on the rear passenger door?

Annoy the hell out of them, even if you get nowhere at least you've tried, and it might even make you feel better!

4
Omega General Help / Now it won't start.........
« on: 20 December 2006, 09:25:53 »
After all the hard work of replacing the broken valve spring in the brother-in-laws 2.5V6 (MY2000 facelift), now the darn thing wont start - I wish he'd come and picked it up last weekend when it was running lovely!

Anyway, did the test, got these codes:
21  Throttle posn - hi voltage
31  Crankshaft sensor - no signal
129  Don't know

Interestingly,  there's no 19, Crankshaft sensor - incorrect signal, which may be significant.

I do remember catching the crank sensor wire behind the oil pipes, but when I noticed it I pulled it out okay, but it did squash the convoluted outer sheath a bit, didn't think it would be enough to make a difference, but then I was surprised at how little it took to damage the knock sensor wire when I caught that round the coolant pipe.

So my bet is the crank sensor - any other ideas?

5
Bought my 2.0 cambelt kit off Vauxcentre, it was all genuine GM parts with the little hologram stickers on. But I also bought a water pump off them, which wasn't genuine GM.

They were very helpful though, unlike the outfit I bought my V6 gasket set off!

6
Omega General Help / Re: Cylinder head/valve problem?
« on: 11 December 2006, 10:24:48 »
Quote
Ian,
Glad you got it sorted and thanks for reporting back.

Your brother-in-law was very lucky to get away with just a spring, I guess the rising piston was creating enough gas flow through the valve to snap it shut so it didnt bend the stem.

And I'm still amazed the collets didn't come off ..............

7
Omega General Help / Re: Cylinder head/valve problem?
« on: 11 December 2006, 08:21:52 »
James,

Exhaust camshaft has to come out to get to the bolts, but inlet can stay fitted.

8
Omega General Help / Re: Cylinder head/valve problem?
« on: 10 December 2006, 22:28:42 »
Just thought I'd close this one off, finished the brother-in-laws car at last, had plenty of delays for weather/taking kids swimming/dog been ill etc. etc. etc, thought I'd never get it done.

Thanks to everyone who gave their advice, it's all appreciated, and especially to Matchless for the replacement valve spring.

Snags I had - getting the flare nuts undone on the oil pipes which go into the block near the filter, lots of skinned knuckles. Just couldn't do it. Eventually, borrowed a 19mm flare nut crows foot off one of the boys at work and it was a doddle. Goes to show, its a lot easier if you've got the right tools. Mind you, it shouldn't be necessary to have to struggle with seized nuts on a MY2000 car.
The oil pipe banjo bolts which go into the oil cooler - I didn't put the seals on properly, had a massive oil leak when I first started it up, had to have the plenum/intake manifold/intake flange off again, which was a bind. My fault for not taking enough care.
Nipped the LH knock sensor wire, between the thermostat housing cooling pipe & and the rear timing belt cover. Didn't nip it hard, but it's a shielded co-ax type thing, and surprisingly delicate. When I figured it out, just spliced a new piece of cable in.

Camshaft timing wasn't a bad job at all, in fact I was a bit sceptical about needing the locking/setting kit, as it went on so easily, but when I checked it at the end with the gauge, it was actually one tooth out on the crankshaft pulley, so yes, £100 well spent.

So now its all done, cost about £300 in parts, plus my time (for nothing - I hope the brother-in law appreciates it!) and that includes a locking kit. Compare that to the £2500 he was quoted by Vauxhall.

It's a lot less daunting going into a big job like that if you know you can go somewhere for advice -  so once again thanks to you guys and keep up the good work.

Ian

9
Omega General Help / Re: Cylinder head/valve problem?
« on: 13 November 2006, 08:22:30 »
Quote
I have some used springs if you want one, PM your address. Also spare valve if it turns out to be slightly bent.

Thanks for that, PM on its way

10
Omega General Help / Re: Cylinder head/valve problem?
« on: 12 November 2006, 20:04:56 »
Valve & guide good, although I'll take the valve to work with me tomorrow and check it for straightness on the surface plate.

Very very very lucky that the collets stayed on, I didn't need to compress the spring at all to get them off, just picked them off with my long nose pliers. If they'd come off it would have been a different story, he probably drove it for 10 miles or so running on 5.

11
Omega General Help / Re: Cylinder head/valve problem?
« on: 12 November 2006, 18:02:30 »
Picture of the business end of the cylinder head, removed, with camshaft still fitted



Picture of the valve spring



First time putting a picture on, hope it works!

12
Omega General Help / Re: Cylinder head/valve problem?
« on: 12 November 2006, 17:24:38 »
Been up looking at the brov-in-laws car all weekend, timing was spot on, delts & tensioners were all good.

Took the head off, and found a broken spring on one of the No.5 inlet valves.

I'll post a picture here if someone tells me how.

Anybody seen broken springs on a V6 before?

Any advice onwhere to buy a new one?


13
Omega General Help / Re: Cylinder head/valve problem?
« on: 08 November 2006, 10:47:22 »
Mark,

Good point about the compression test. I'll have to see what state the engine is in when I get there, I know the Vauxhall dealers have removed some bits including the cambelt cover & rocker cover, don't think they got further than that.

As regards the car's history, he's had the car about 3 years, bought it from a car supermarket with about 50,000 up, has about 100,000 now. Nothing untoward has happened in the time he's had it, and I think it had full history when he got it. Dunno if anyone managed to mess it up before he got it.

Ian

14
Omega General Help / Re: Cylinder head/valve problem?
« on: 07 November 2006, 19:34:02 »
Guys,

Thanks for the advice about the locking kit, if you read my original post you'll see I'm already aware of the need for one, what I really need is advice on valve problems! The timing belt is still intact, the tensioners haven't failed, the engine was still running (albeit roughly - no compression on No.5 cylinder).

Does anyone have any experience of dropped/sticking/burnt valves, broken springs, maybe even bad hyd tappets?

Ian

15
Omega General Help / Re: Cylinder head/valve problem?
« on: 07 November 2006, 19:00:50 »
Quote
Quote
I know for a fact he had the belt & tensioners changed back in the summer, so I think that isn't too likely (although anything's possible).

Ian
The garage that did it, did they use a timing kit? If it was back street mechanic, probably not...  ...which may explain the current situation.

No idea - I'll find out at the weekend.

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