Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[ScottieMV6]

Compression test done (hopefully I have done it right - plenum removed, all spark plugs out, each cylinder tested in turn).

Don't know if I have the cylinder numbers in the right order but I used the drivers side cylinder closest to the front of the car as number 1, the one opposite as 2, then middle one on drivers side as 3 and so on.

Results were

1 - 15 Bar
2 - 15 Bar
3 - 15 Bar
4 - 15 Bar
5 - 15 Bar
6 - 19.5 Bar (I thought this was odd so tested it again and got 15 Bar though the battery was running down at this point)

What do you think?  :-/ :-/

[Richard A]

Yes 1,3,5, drivers side 2,4,6 the other, those figures look very, very good at 218 psi for all cylinders and most unusual on a used engine. 
regards
richard a

[Lizzie_Zoom]

There appears to be no compression problems with those figures, and faults with the HG seem highly unlikely!

[Del Boy]

There very good results.

[ScottieMV6]

Thats what I thought, so what else is likely to cause clouds of white smoke, misfire and a burning smell??

[Del Boy]

All them symptoms point to a HG faliure but, with them results i'm not so sure to be honest.

[ffcgary1]

Have you checked and double checked that your breathers are clear and your leads are good, your dis maybe faulty causing unburnt fuel in the exhaust. that will also kill your cats. Have you got oil mixing with your coolant or water in the sump if no to these then i would say that with those cylinder figs  your head gaskets are ok.

[ScottieMV6]

There is mayo on the filler cap (not loads) but none on the dipstick. When I pulled the plugs out they were wet with oil?? :-/

[tunnie]

There is mayo on the filler cap (not loads) but none on the dipstick. When I pulled the plugs out they were wet with oil?? :-/

Cam cover gasket has failed

[Richard A]

Around the plugs or the bit that sparks ?
If down the plug hole, as you know 'cam cover' gaskets, if inside the cylinder maybe the oil under pressure is seeping down the valve stems ?
Filler cap 'mayo' is short runs and not changing the oil (Vauxhall 10/40) every 4000miles/6 months.
regards
richard a

[ScottieMV6]

Oil around the bit that sparks. Cam covers were done around 1000 miles ago and oil change done around 10 miles ago.

Agree the mayo is likely to be short journey as I only managed 10 miles before clouds of white smoke forced me to stop.

I am totally at a loss now.  :-/ :-/

I might re do the compression test just to be absolutely sure??

[Del Boy]

Oil around the bit that sparks. Cam covers were done around 1000 miles ago and oil change done around 10 miles ago.

Agree the mayo is likely to be short journey as I only managed 10 miles before clouds of white smoke forced me to stop.

I am totally at a loss now.  :-/ :-/

I might re do the compression test just to be absolutely sure??

If the plugs are wet with oil this could cause it. When mine were first done, it smoked like a gooden when it was first run, but after 20 odd miles this cleared.

[ScottieMV6]

Oil around the bit that sparks. Cam covers were done around 1000 miles ago and oil change done around 10 miles ago.

Agree the mayo is likely to be short journey as I only managed 10 miles before clouds of white smoke forced me to stop.

I am totally at a loss now.  :-/ :-/

I might re do the compression test just to be absolutely sure??

If the plugs are wet with oil this could cause it. When mine were first done, it smoked like a gooden when it was first run, but after 20 odd miles this cleared.

Normally expect blue smoke if burning oil though???  :-/ :-/

[ffcgary1]

Did you use gen gaskets and are you sure that you havent dislodged a gasket when you fitted them, i bet your leak is on the passenger side. That is the worst of the two banks and easy to make a mistake on.

[Richard A]

Is the coolant ok ie no smell of petrol/oil, what was the oil like that came out when you changed it ?

regards
richard a