Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Ady on 15 February 2014, 10:42:53

Title: Tapping noise on first start of the day.
Post by: Ady on 15 February 2014, 10:42:53
When I start my 2.6 first thing in the morning I get a tapping nocking noise from the engine. Last about 3/5 seconds then goes.  Is this normal or is there a problem with the car?
Did an oil change last month but that didn't help it. I used valvoline 10/40 semi from GFS. 
Also yesterday after parking it up for 2 days as I work away from home it was hesitant and juddering for fist 2 mins. Tho never done this before and was fine this morning pulling well with all it's power.

Any thoughts ??

Ady 
Title: Re: Tapping noise on first start of the day.
Post by: Andy B on 15 February 2014, 10:46:38
When I start my 2.6 first thing in the morning I get a tapping nocking noise from the engine. Last about 3/5 seconds then goes.  Is this normal or is there a problem with the car?
Did an oil change last month but that didn't help it. I used valvoline 10/40 semi from GFS. ......
Any thoughts ??

Ady

Sounds like a sticky 'tappet' The hydraulic lifters stick closed sometimes when they've been left with a cam lobe on them overnight. You've done an oil change, which is a good thing anyway, whether it helped or not. Wynnes do an oil treatment for sticky lifters - never used it myself, but seems to get good reviews.  :y

click here (http://www.ebay.co.uk/sch/i.html?_trksid=p2050601.m570.l1313.TR0.TRC0.H0.Xwynnes+hydraulic+lifter&_nkw=wynnes+hydraulic+lifter&_sacat=0&_from=R40)
Title: Re: Tapping noise on first start of the day.
Post by: 05omegav6 on 15 February 2014, 14:50:03
Works wonders :y

The iffy start is probably damp related, and sitting for two days will also allow the oil to drain completely from the heads. If it clears quickly then not a big deal... the lifter treatment will help. If it doesn't clear once the engine is hot then you have a problem :y
Title: Re: Tapping noise on first start of the day.
Post by: Ady on 15 February 2014, 19:27:54
Ye the iffy start cleared straight away and has been perfect today. Will give the treatment a go and hopefully will do the trick.

Thanks for the help

 😃😃
Title: Re: Tapping noise on first start of the day.
Post by: Andy H on 15 February 2014, 19:45:39
My 2.6 has been tapping for a few moments after a cold start for about 18 months.

I fitted new spark plugs a couple of weeks ago and found one loose plug :(

I haven't noticed the noise since...
Title: Re: Tapping noise on first start of the day.
Post by: 05omegav6 on 15 February 2014, 19:56:05
My 2.6 has been tapping for a few moments after a cold start for about 18 months.

I fitted new spark plugs a couple of weeks ago and found one loose plug :(

I haven't noticed the noise since...

Plugs had been in forever though iirc :-\ they start to come loose after 30-35k...

Leave them until the 80k interval that VX suggest, and you'll find them barely fingertight :y
Title: Re: Tapping noise on first start of the day.
Post by: Andy H on 15 February 2014, 20:09:34
My 2.6 has been tapping for a few moments after a cold start for about 18 months.

I fitted new spark plugs a couple of weeks ago and found one loose plug :(

I haven't noticed the noise since...

Plugs had been in forever though iirc :-\ they start to come loose after 30-35k...

Leave them until the 80k interval that VX suggest, and you'll find them barely fingertight :y
They had been in for about 70k. (so pretty much backs up every comment made about the 80k service interval being an overoptimistic sales ploy.....)

I still think the plugs are worth checking, I hadn't considered a loose plug as being the source of the noise as all the experience on here points to lifters or manifold gaskets.
Title: Re: Tapping noise on first start of the day.
Post by: 05omegav6 on 15 February 2014, 20:31:36
That it stops once the engine has settled immediately after starting does suggest a sticky lifter :y
Title: Re: Tapping noise on first start of the day.
Post by: TheBoy on 16 February 2014, 09:44:09
Wynns can work wonders.

However, before putting it in, I'd change the oil, as it works better if you can leave it in for a few thousand.
Title: Re: Tapping noise on first start of the day.
Post by: Andy B on 16 February 2014, 09:46:31
Wynns can work wonders.

However, before putting it in, I'd change the oil, as it works better if you can leave it in for a few thousand.

.....
Did an oil change last month but that didn't help it.  ....
Any thoughts ??

Ady


 ;)  ;)  ;)  ;)
Title: Re: Tapping noise on first start of the day.
Post by: TheBoy on 16 February 2014, 10:19:00
Good point, well presented  :-[
Title: Re: Tapping noise on first start of the day.
Post by: ajsphead on 16 February 2014, 19:30:37
Had just the same problem. 2 oil flushes in 10K and GM oil and there's no sound at all now. Mind you I routinely throw a flush in at each oil change anyway.