R

rgholtby

New Member

• Jul 31, 2024

• #1

Hi all I have no compression on cyl 2. Does anyone know a mechanic near me in East Yorkshire who could remove head and fit new valves for me?
Any help much appreciated. Thanks

 

Datatek

Well-Known Member

• Jul 31, 2024

• #2

rgholtby said:

Hi all I have no compression on cyl 2. Does anyone know a mechanic near me in East Yorkshire who could remove head and fit new valves for me?
Any help much appreciated. Thanks

Click to expand...

Why do you think it's problem with the valves?

 

R

rgholtby

New Member

• Aug 1, 2024

• #3

Hi it has been running on lpg and it is known for this to happen. It's had new plugs and coil packs thren a compression test.
Cylinder 2 is zero. Thanks

 

Datatek

Well-Known Member

• Aug 1, 2024

• #4

rgholtby said:

Hi it has been running on lpg and it is known for this to happen. It's had new plugs and coil packs thren a compression test.
Cylinder 2 is zero. Thanks

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So perhaps it should be both heads and all valves or you may be doing the job again.

 

L

lynall

Well-Known Member

Full Member

• Aug 1, 2024

• #5

stick a boriscope down the plug hole first

 

R

rgholtby

New Member

• Aug 1, 2024

• #6

Hi I have ordered a borescope today to have a look.
Thanks for your responses chaps.

 

Graculus

Well-Known Member

• Aug 1, 2024

• #7

If it's zero, then it's more than just valves - maybe you should be looking for someone to diagnose the concern before committing to a repair that may not do what you expect.

 

R

rgholtby

New Member

• Aug 5, 2024

• #8

Hi the valve is split which is giving the zero reading all other cylinders are spot on compression. Bore and piston unharmrmed and good. Need a mechanic who will tackle the job now. Thanks

 

R

rgholtby

New Member

• Aug 5, 2024

• #9

Datatek said:

So perhaps it should be both heads and all valves or you may be doing the job again.

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I have used an endoscope on all bores and compression tested them and all good apart from cyl 2.
I guess these engines don't like lpg

 

Graculus

Well-Known Member

• Aug 5, 2024

• #10

What condition is the seat in? would be my first question on removing the head, quickly followed by 'what about the others?'
Obviously Cyl 2 was all good, right up ro the point it wasn't. How confident are you that it just needs attention on one cylinder on one head?
I'm not looking for a debate, just pointing out that this may be an exercise you have to repeat...

 

Datatek

Well-Known Member

• Aug 5, 2024

• #11

Graculus said:

What condition is the seat in? would be my first question on removing the head, quickly followed by 'what about the others?'
Obviously Cyl 2 was all good, right up ro the point it wasn't. How confident are you that it just needs attention on one cylinder on one head?
I'm not looking for a debate, just pointing out that this may be an exercise you have to repeat...

Click to expand...

As above, waste of time IMO doing just one pair of valves. If one has failed, how long before another goes and maybe does some serious damage?