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1

Omega General Help / Re: V6 2.5 bypass valve inlet hose part number?

« on: 16 June 2016, 15:21:04 »

The part number cannot be seen here.

"GM 90 457 649" and "90 457 666" are the two original part numbers, these are absolutely one and the same part.
 
I think it split because it worn out. I wouldn't say it is a symptomatic of some other problem. It's just all the parts have their age, soon or later it happens to them.


Here are the alternative parts:

VAICO  V40-1313
http://www.autodoc.co.uk/vaico/7078511

and VAICO V40-1312
http://www.autodoc.co.uk/vaico/2220607


The difference between them depends only on a chassis number. So if you give me yours, I can check the right one for you.

2

Omega General Help / Re: Low idle on x20xev

« on: 06 May 2016, 09:19:04 »

Well, you've done a lot... it's weird 
Have you checked the mass air flow sensor?

3

Omega General Help / Re: Omega 2.5 timing belt kits

« on: 20 April 2016, 14:25:54 »

I'd stick with Gates. For your car there can be a few suitable kits. Can you tell your chassis number (vin), I can check it

Thanks, VIN no. is WOLOVBM35Y1166231. In the past I have put a low mileage 3.0 kit on my 3.2 and it fitted OK. I think any kit will do, and being a miser I go for the cheapest. One day I shall come unstuck, then all members may laugh. But the car only cost me £302, last belt change,  previous owner forum member ajsphead believed, was 5 years and 38000 miles ago, only record I have is Mr. Simon Davies t/a Just VW, saying 'New MOT & oil change, receipt for cambelt' and attached is an invoice from WRS Motaquip for K0245453XS timing belt'. So make of timing belt, and whether it was ever fitted, are uncertain. The car is a facelift 2.5 CDX manual petrol estate in wonderful condition, no rust, so cambelt change seems sensible.

Here you go 

GATES  K025453XS

Check it out here http://www.bestpartstore.co.uk/787257

4

Omega General Help / Re: Localize coolant leak

« on: 20 April 2016, 13:56:54 »

Absolutely. It's the water pump the leak is coming from

5

Omega General Help / Re: oil filters

« on: 15 April 2016, 10:34:59 »

after a recent post regards oil changing & having answers that included converting to a screw on type. if I wished to alter mine what will I need & how will I know which filter to use.

You'll need to buy oil and oil filter. And if you change oil the air filter should be replaced too.
I can tell you the part numbers for filters, if you give more information about your car

6

Omega General Help / Re: Omega 2.5 timing belt kits

« on: 15 April 2016, 10:16:11 »

I'd stick with Gates. For your car there can be a few suitable kits. Can you tell your chassis number (vin), I can check it

7

Omega General Help / Re: Rear suspension arm

« on: 13 April 2016, 14:04:10 »

sure, it's a mechanic job, don't try this at home    take it back

8

Omega General Help / Re: oil leak

« on: 07 April 2016, 14:48:21 »

It can be the upper engine gaskets or crankshaft gaskets.

9

Omega General Help / Re: Engine overheating

« on: 28 March 2016, 16:15:38 »

Perhaps the problem is really in a faulty thermostat, it's probably jammed.
At least it is not so expensive, so you can start with it. Anyway it can't hurt to replace it

10

Omega General Help / Re: rocker cover gasket

« on: 28 March 2016, 16:11:21 »

it's not necessary to use a sealant. but if you want to, the best one, as to me, is Victor Reinz, it's called REINZOSIL. It hardens fast and it’s resistant to high temperatures (200-300 degrees)

11

General Car Chat / Re: Thoughts on engine knock

« on: 24 March 2016, 09:21:05 »

it can be due to:

-   an increased gap between the rocker and the valve stem or the wear of these parts, inaccurate adjustment of the gap during engine assembly.
-   perhaps there is a large main bearings wear. Another symptom is the reduction of oil pressure in the engine lubrication system. How to fix? It is necessary to replace the main bearing shells.
-   connecting rod bearings worn. So they should be replaced.
-   the increased gap between the pistons and cylinders. You need to replace worn parts with the new standard size
-   early ignition or the increase of the gap between the piston pins and con rod bushings in the piston boss

12

General Car Chat / Re: Engine oil difference

« on: 22 March 2016, 11:26:09 »

The issue is with clutches. If you use car oil for your bike you can mess-up your clutch as the friction modifiers in most car engine oils use special additives to make the oil even better in lubricating. The additives to oil for cars mean less friction.
 
So my recommendation is to stick with special bike oil