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dogdog1

Active Member

• May 1, 2016

• #1

Hi , I've put a new cylinder head and gasket on my Defender , initially had problems with getting the injectors properly clamped down , sprays of diesel shooting up from the head , took several starts before I managed to sort them all , that's done now and it starts and runs well but I haven't let it run for any more than a minute as there is a loud popping/thumping noise coming from the top of the snorkel ! Can anyone tell me what on earth it is ?

 

goonarmy

Beer tester

LZIR Despatch Agent

• May 1, 2016

• #2

https://www.landyzone.co.uk/land-rover/strange-noise-coming-from-snorkel.299265/#post-3732518

 

boguing

Well-Known Member

Full Member

• May 1, 2016

• #3

Have you checked the tappets since fitting the head?

 

Coffeelandy

Well-Known Member

• May 1, 2016

• #4

Have you pinched the rubber dump valve on the air filter holder? Might have stuck shut?

 

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dogdog1

Active Member

• May 1, 2016

• #5

Tappets were reset after new ( built up ) head installed . I'll check on the dump valve tomorrow .

 

waldamar

Well-Known Member

• May 1, 2016

• #6

Nesting season........................... check for squatters!

 

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dogdog1

Active Member

• May 2, 2016

• #7

Simple cure ! I hadn't torqued down the rocker shaft sufficiently , not having a torque wrench delicate enough to measure 5nm I then could not gauge the angle torque that comes after that . Torquing it down evenly to 25nm and resetting the tappets did the trick .