What's that chuffing noise

CohPC · Oct 30, 2023

Got a chuffing noise, sounds like the manifold gasket maybe head gasket but wanted to see if anything else could be an issue. It stops when lead to plug 4 is removed

landowner · Oct 30, 2023

CohPC said:
Got a chuffing noise, sounds like the manifold gasket maybe head gasket but wanted to see if anything else could be an issue. It stops when lead to plug 4 is removed

Could be a sticky inlet / exhaust valve, tight tappet ?

CohPC · Oct 30, 2023

landowner said:
Could be a sticky inlet / exhaust valve, tight tappet ?

Ive checked the tappets all fine

Hicap phill · Oct 30, 2023

Is plug 4 tight?

If the gasket has gone unsure why it does not make a noise without combustion.

Any talc on the gasket might might help if it blows a gas

CohPC · Oct 30, 2023

added video for your enjoyment/amusement

landowner said:
Could be a sticky inlet / exhaust valve, tight tappet

CohPC · Oct 30, 2023

Hicap phill said:
Is plug 4 tight?

If the gasket has gone unsure why it does not make a noise without combustion.

Any talc on the gasket might might help if it blows a gas

err thats a good point - the air pressure in the cylinder would still be pushing air out

kermit_rr · Oct 30, 2023

Hicap phill said:
If the gasket has gone unsure why it does not make a noise without combustion.

Extra pressure from combustion on a failing gasket

CohPC · Oct 30, 2023

think the process is going to be 1 remove manifold see if any obvious damage to gasket, new manifold gasket, if that doesnt do the trick then could it be the head gasket - or is it worth putting a new head gasket on anyway?

kermit_rr · Oct 30, 2023

If it's not the plug then i would bet the HG

CohPC · Oct 30, 2023

kermit_rr said:
If it's not the plug then i would bet the HG

plugs in tight,

looks like ive got a few evenings of spannering to do

jimleshed · Oct 30, 2023

My bet would be manifold gasket. HG would probably leak to cooling first. You could try feeling for gas blowing around CYl 4, if there is space to see!

kermit_rr · Oct 30, 2023

jimleshed said:
My bet would be manifold gasket. HG would probably leak to cooling first. You could try feeling for gas blowing around CYl 4, if there is space to see!

I had a hg leak direct to the outside.. started off as a chuff.. developed into a gunshot

CohPC · Oct 30, 2023

jimleshed said:
My bet would be manifold gasket. HG would probably leak to cooling first. You could try feeling for gas blowing around CYl 4, if there is space to see!

Oil looks fine and no bubbles in rad so possible blow to edge

Hicap phill · Oct 30, 2023

Exhaust gasket….

Head gasket normally goes between 2&3 & if you removed the plug 4 it would not run

CohPC · Oct 30, 2023

so the votes are in on the new Landy zone gameshow "Name that chuffing noise!"

@Hicap phill says its a head gasket
@kermit_rr says its the manifold gasket
@jimleshed also going with manifold gasket
@landowner thinks it could be a sticky valve or tight tappet

I'm going to start work on it tonight but but don't intend being in the garage all night so it may be a few days before we announce the winner.

lynall · Oct 30, 2023

200tdi head gasket likes to fail on the rear of number 4, apple don't fall far from the tree and all that!
You can feel it if you put your hand down the back of the cyl head.

CohPC · Oct 30, 2023

lynall said:
200tdi head gasket likes to fail on the rear of number 4, apple don't fall far from the tree and all that!
You can feel it if you put your hand down the back of the cyl head.

So another contestant going with the head gasket

kermit_rr · Oct 30, 2023

CohPC said:
so the votes are in on the new Landy zone gameshow "Name that chuffing noise!"

@Hicap phill says its a head gasket
@kermit_rr says its the manifold gasket
@jimleshed also going with manifold gasket
@landowner thinks it could be a sticky valve or tight tappet

I'm going to start work on it tonight but but don't intend being in the garage all night so it may be a few days before we announce the winner.

No, i think hg.

CohPC · Oct 30, 2023

kermit_rr said:
No, i think hg.

Oops, so that's 3 head gaskets.1 manifold gasket, 1 sticky valve/tappets.

Must admit I've ordered head gasket set already as I'm probably going to check it anyway

romanrob · Oct 30, 2023

I go manifold... but get a piece of hose, put one end on your ear, and with the other end search around the edge of the HG and manifold...

What's that chuffing noise

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