THE ROVER SD1 FORUM

tommosredone · Posted: Fri Sep 07, 2007 4:57 pm Post subject: Rattle and Smoke

Hello all, Brain picking time!
My TP Vitesse smokes VERY badly now on start-up, particularly when warm.
It has also developed a serious sounding rattle when cold. The rattle sounds like camshaft or higher, and is only bad when under load when cold.
It is NOT a tappet, as I know what they sound like, but it does make the noise at the same rate as one worn tappet (if that makes sense). You can't hear it with the bonnet up and revving, only when driving and under load.
Accompanying this noise is higher than usual oil pressure (maybe because it IS cold?).
I've had the easy rocker cover off to see if anything is loose (it's got the welded steel rockers), all looked OK.
Could distributor cause such a noise? Thinking advance mechanism, as it goes as soon as you come off the throttle a sniff.
I'm using about a litre of oil per 300 miles, and it's not leaking!!!!
Do we have valve stem oil seals on our V8's?
Any pointers gladly welcomed.

_________________
I wish I could make my own petrol.

Chris P · Posted: Fri Sep 07, 2007 8:38 pm Post subject: Re: Rattle and Smoke

tommosredone wrote:

Do we have valve stem oil seals on our V8's?

Yes, on the inlet valve stems only - later versions of the V8 have it
on inlet and exhaust (presumably for emissions reasons).

My Vitesse puffs smoke when it starts, particularly cold. I've been told
this is the valve stem seals disintegrating, not in itself a bit problem.
But I don't get the noise you describe, or the oil usage.

ramon alban · Posted: Fri Sep 07, 2007 11:55 pm Post subject: Re: Rattle and Smoke

tommosredone wrote:

Hello all, Brain picking time!
My TP Vitesse smokes VERY badly now on start-up, particularly when warm.

As Chris says, its prolly the valve stem oil seals.

It has also developed a serious sounding rattle when cold. The rattle sounds like camshaft or higher, and is only bad when under load when cold.
It is NOT a tappet, as I know what they sound like, but it does make the noise at the same rate as one worn tappet (if that makes sense).

This suggests worn cam lobe.

You can't hear it with the bonnet up and revving, only when driving and under load.
Accompanying this noise is higher than usual oil pressure (maybe because it IS cold?).

The high oil pressure could be due to blocked oil galleries

I've had the easy rocker cover off to see if anything is loose (it's got the welded steel rockers), all looked OK.
Could distributor cause such a noise? Thinking advance mechanism, as it goes as soon as you come off the throttle a sniff.

No! Not at cam speed.

I'm using about a litre of oil per 300 miles, and it's not leaking!!!!

So it must be being consumed by the fires inside your cylinders.

Get someone to follow you and report on smoking exhaust etc.

Do we have valve stem oil seals on our V8's?
Any pointers gladly welcomed.

With a possible worn cam lobe, oil draining down the valve stems, burning oil at 1 lt per 300 miles and possible blocked oil galleries, I reckon the engine is due some maintenance.

_________________
Ramon

tommosredone · Posted: Sun Sep 09, 2007 8:03 pm Post subject:

Super!
Cheers for the tips.
Looks like heads off one weekend.
Anyone know where to get WL9 camshafts from?
cheers,

_________________
I wish I could make my own petrol.