Leaking & holed suction / intake valve

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Pengze
Mechanic
Posts: 60
Joined: Tue Sep 23, 2008 8:57 pm

Leaking & holed suction / intake valve

Postby Pengze » Wed Sep 28, 2011 8:40 pm

With regards to a diesel combustion 4-stroke engine, what are the causes for leaking & holed suction / intake valve on cylinder head?
Appreciate your valuable advice & feedback.

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Big Pete
Engineering Mentor
Posts: 817
Joined: Fri Apr 24, 2009 11:18 pm
Currently located: Solihull, England

Re: Leaking & holed suction / intake valve

Postby Big Pete » Sat Oct 22, 2011 11:47 pm

It is very unusual to have that sort of problem on the inlet valve.

If the inlet valves are fitted with ROTOCAPS, are they working?
are the valves fromthe original engine maker or a substandard supplier?
is their a major problem with valve or injection timing, or valve clearance so that the valve is partially open during combustion?
where the valves correctly overhauled?
Thats all I can think of for now.

BP
It is always better to ask a stupid question than to do a stupid thing.

rjwadhwa
Bilge Dweller
Posts: 3
Joined: Sun Sep 02, 2007 11:10 am
Currently located: Toronto, ON

Re: Leaking & holed suction / intake valve

Postby rjwadhwa » Wed Nov 16, 2011 5:52 pm

Check the pressure drop across the air cooler. Cleaning the air side of the air cooler should help.


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