symptoms of a slipped liner

[PeterAllen]

Hi all,
hate to have to ask this question but, what are the symptoms of a slipped liner?
driving home from the airport the car developed an audible throb from one of the back cylinders on drivers side. When driving sounds like if the spark plug is not in the engine ( sounds like an old VW) the throb is consistent with engine revs and it may only be my imagination but may have lost some power.
I have yet to check things out further and intially thought it may have blown a hole in the exhaust manifold but unlikely.
Is this symptomatic of grave problems? any ideas?

[Blknight.aus]

loose exhaust manifold bolt (or missing) if its anything like the v8 discos Ive owned left bank rear every time.

[PeterAllen]

thanks Dave, hope you are right.
I was reading further about slipped liners and they only generally become noisy when the engine is warm. This is a constant throb from cold so lends more weight to the exhaust manifold.
I will check out the exhaust manifold tomorrow

[PLR]

thanks Dave, hope you are right.
I was reading further about slipped liners and they only generally become noisy when the engine is warm. This is a constant throb from cold so lends more weight to the exhaust manifold.
I will check out the exhaust manifold tomorrow

G`day , it`s pretty common for the manifolds to crack but you probably need to remove the covers to see .

[PeterAllen]

when you refer to taking off the covers are you talking about the metal heat shields located on the top? If the manifold is cracked can it be fixed? welded or some of that muffler fix or is it a replacement job?

[wayneg]

Change my comment.......... The guy is not conclusive this is a liner problem


Slipped cylinder liner? - YouTube (http://www.youtube.com/watch?hl=en&v=zg2TlJDLKXk&gl=US)

[PeterAllen]

2000 Range Rover V8 4.6 - noise: exhaust manifold or head gasket ? Part 1 - YouTube

that sounds like a head gasket. Mine is much quieter than these seem to be and there is no metalic rattling sound as in the other video.

hopefully its just a blown manifold gasket.

[harry]

i'd say the jigger has blown an exhaust gasket.

grab your wife's bottle of windex and squirt the exhaust manifold where the manifold bolts to the head with the engine running.

you will probably see and hear where it is leaking.

it is a common problem.

if it hasn't been doing it for long, you may get away with tightening the manifold bolts but you will need to replace the gaskets soon.

[PeterAllen]

thanks Harry,
I will check that out tomorrow afternoon if I get a chance and update after.

[Craig_Keira]

I'd almost certainly think that's a gas leak. It has a Pfft to it. If it were something coming apart in the engine, you'd expect a lot more defined, metallic clunk, thud or knock. The pressure building up and releasing can definitely be heard. I'd simply put the car to 4x4 height and get under it! :)

But a few people don't like doing things like that ;)

[Grumbles]

Too true Craig. I like my rib cage to be convex - not concave.

[Hoges]

I'd almost certainly think that's a gas leak. It has a Pfft to it. If it were something coming apart in the engine, you'd expect a lot more defined, metallic clunk, thud or knock. The pressure building up and releasing can definitely be heard. I'd simply put the car to 4x4 height and get under it! :)

But a few people don't like doing things like that ;)

It's not a problem if you slip the correctly sized hardwood blocks (50 x50 x130mm) in between the axle plates and bump stops! (They store neatly in the spare wheel well -now dry:D)

[wayneg]

I'd almost certainly think that's a gas leak. It has a Pfft to it. If it were something coming apart in the engine, you'd expect a lot more defined, metallic clunk, thud or knock. The pressure building up and releasing can definitely be heard.)

If you read the comments on the Vid PeterAllen posted, not his car, a two year old vid, it states the head gasket is blown.........

Turned out to be a blown head gasket. Exhaust manifold is good.
Total cost breakdown:
- 560 usd for labour (including valve job)
- 340 usd for parts, including full gasket kit and ARP head studs.
BTW, I'm in the Dominican Republic, so it turned out to be $900 to fix $15,000 Range Rover. Still worth it.