Valve cover gasket leak?

[mikeincanada]

Hi there.
Discovery II
1999
115,000km

Son was driving the disco this morning. He said it was running very rough and struggling 30km/hr. He limped home.

I see an oil leak in the head gasket area. Checked oil and dont see coolant in oil. Checked coolant and dont see oil in coolant. Is the valve cover gasket prone to leaks? My first suspicion was the dreaded head gasket failure but I'm hoping its the easier to fix valve cover gasket.

I'm wondering why an oil leak would cause cylinder misfires. I have not taken the truck out again but have run it at idle and it sounds very rough as if it is not running on all 8.

I was hoping for some advice on what to look for before I take it into the shop tomorrow. Praying its not the head gasket!

Merry Christmas! and hoping for some advice
Mike

 

[basstard440]

Mike I can tell you "If it's not leaking, it's not a rover". "Rovers don't leak, they bleed" and it's just marking its territory.
I have not heard of a cover leak causing errors running unless it ran dry, then you have bigger problems. Are you getting any lights on the dash?
My guess would be the MAF needs to be cleaned.
I would run it down to the local parts store and have the codes read then come back here for a prognosis.

 

[joey]

How about more info.. last tune up, and the type of plugs you used if you changed them.

Wires are how old?

Filters, fluids,? The more info the better.