Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: philich on 12 April 2010, 20:25:03

Title: 2.5 Tappet noise?
Post by: philich on 12 April 2010, 20:25:03
Hi ,I have just bought a 2000 2.5 CD with 116000 miles on the clock, My intention was to run the car for about 6 mouths and then break it as donor for my Triumph TR7 convertible project.
However its much to nice, everything works and it drives like a dream.

I have had to replace the cam gaskets and plug leads, someone had done a botched job on them, 2 plugs were completely submerged.

The only problem I have now is when I start the engine there is what sound like tappet noise which lasts for about 2 to 3 minutes. Once it clears it sounds fine. All the cams looked fine and the top end of the engine under the covers was very clean no sludge just a nice golden brown.
Any idea?

Phil
Title: Re: 2.5 Tappet noise?
Post by: dbug on 12 April 2010, 20:58:11
Quote
Hi ,I have just bought a 2000 2.5 CD with 116000 miles on the clock, My intention was to run the car for about 6 mouths and then break it as donor for my Triumph TR7 convertible project.
However its much to nice, everything works and it drives like a dream.

I have had to replace the cam gaskets and plug leads, someone had done a botched job on them, 2 plugs were completely submerged.

The only problem I have now is when I start the engine there is what sound like tappet noise which lasts for about 2 to 3 minutes. Once it clears it sounds fine. All the cams looked fine and the top end of the engine under the covers was very clean no sludge just a nice golden brown.
Any idea?

Phil

Try a couple of quick oil & filter changes  - worked for me  :y

Re your project - are you a member of the TR Register?
Title: Re: 2.5 Tappet noise?
Post by: philich on 12 April 2010, 21:14:00
I thanks for that, I may try it, No I am not a member yet The TR,s still stripped down, and still in the welding stage, but I hope to have it ready for painting with the engine in place before winter, I will join the register when its on the road

Phil 
Title: Re: 2.5 Tappet noise?
Post by: dbug on 12 April 2010, 21:17:32
Quote
I thanks for that, I may try it, No I am not a member yet The TR,s still stripped down, and still in the welding stage, but I hope to have it ready for painting with the engine in place before winter, I will join the register when its on the road

Phil 

Well worth it mate - I've been a member for more years than I care to remember - from TR3A, throough TR4, 5 and 6PI - now settled with a TR4A!  Try the web site - good source of cheap and 2nd user spares + loads of free advice :y
Title: Re: 2.5 Tappet noise?
Post by: Lazydocker on 12 April 2010, 21:21:09
Quote
Hi ,I have just bought a 2000 2.5 CD with 116000 miles on the clock, My intention was to run the car for about 6 mouths and then break it as donor for my Triumph TR7 convertible project.
However its much to nice, everything works and it drives like a dream.

I have had to replace the cam gaskets and plug leads, someone had done a botched job on them, 2 plugs were completely submerged.

The only problem I have now is when I start the engine there is what sound like tappet noise which lasts for about 2 to 3 minutes. Once it clears it sounds fine. All the cams looked fine and the top end of the engine under the covers was very clean no sludge just a nice golden brown.
Any idea?

Phil

Sure it's tappet and not Exhaust manifold gasket? Can sound a little like tappets :y
Title: Re: 2.5 Tappet noise?
Post by: philich on 12 April 2010, 21:22:53
Thanks I will look into it, But I may get some interesting reactions when they see what I am building
Phil
Title: Re: 2.5 Tappet noise?
Post by: philich on 12 April 2010, 21:28:14
I can't smell any exhaust, but I could try getting hand up from under the car
Thanks Phil
Title: Re: 2.5 Tappet noise?
Post by: dbug on 12 April 2010, 21:55:31
Quote
Thanks I will look into it, But I may get some interesting reactions when they see what I am building
Phil

Give us a clue mate :y
Title: Re: 2.5 Tappet noise?
Post by: philich on 12 April 2010, 22:07:55
A Triumph TR7 With a Vauxhall 2.5 V6 (and not the usual Rover V8)
Title: Re: 2.5 Tappet noise?
Post by: Andy B on 12 April 2010, 22:16:39
Quote
A Triumph TR7 With a Vauxhall 2.5 V6 (and not the usual Rover V8)

But you'll lose the V8 sound! A fuel injected V6 just won't be the same  :-/  :-/  :-/
Title: Re: 2.5 Tappet noise?
Post by: philich on 12 April 2010, 22:29:56
I've had a couple of V8 SD1's, Including a Vitesse and its all down the exhaust But v6 give you a good 20 Bhp more, probably better MPG than the old 2.0 The v8 is great engine but its very old outdated and drinks petrol for fun
Title: Re: 2.5 Tappet noise?
Post by: capoMV6 on 12 April 2010, 22:43:17
Try looking at the valve lifters also. Mine did have these noises before and disappeared after a good oil change. HTH
Title: Re: 2.5 Tappet noise?
Post by: alank46 on 13 April 2010, 07:42:01
Hi
My bet is that it's one of the head to exhaust manifold gaskets.  Use a length of hose in one ear, the other end around the manifolds to search for the noise.  If it is that gasket the WSM says to remove the engine or cyl head for access.  That's not necessary, unbolt the appropriate engine mount and tilt the engine over to give access.
Alan
Title: Re: 2.5 Tappet noise?
Post by: philich on 15 April 2010, 20:18:07
Thanks Guys

 Will try the tube in the ear and I am planning to give it a good flushing and oil change in few weeks

Oh when I started car tonight ,not run for a few days it sounded fine! Very strange