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si124

Member

• Jun 12, 2013

• #1

just bought a 1967 sedies 2a petrol, ran fine on the 40 mile trip home, but has now developed a knocking from engine when accelerating hard, anybody got any ideas before i rip the whole engine apart.

 

Freelaner

Landy Driver

• Jun 12, 2013

• #2

big end bearings

 

jamesmartin

Well-Known Member

• Jun 12, 2013

• #3

you could check oil pressure

 

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si124

Member

• Jun 12, 2013

• #4

oil pressure is good, or so the dash gauge says

 

SpringDon

Well-Known Member

• Jun 13, 2013

• #5

Could it be pinking ? Maybe if the timing has slipped

 

dominicbeesley

Well-Known Member

• Jun 13, 2013

• #6

What's it sound like? A dull thudding or a rattle?

 

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si124

Member

• Jun 13, 2013

• #7

no not pinking, i can best describe it as the same noise as an old ford overhead cam knock, if you know what i mean, but cam knock all time when going dont they ?

 

dominicbeesley

Well-Known Member

• Jun 13, 2013

• #8

Not much help for me only Fords I've ever had are pushrods...is it same in all gears? Could be dodgy prop-shaft joints?

 

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si124

Member

• Jun 13, 2013

• #9

yeh same in all gears but only when you floor it drive it kindly and its fine, off down to my garage now to have a good look at it and check the valve clearances

 

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si124

Member

• Jun 13, 2013

• #10

bye the way the gearbox has its own rattles and crunches lol

 

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nongrokal

Active Member

• Jun 13, 2013

• #11

almost certainly piston noise, a big end will knock under light load, main bearings will rumble under hi load, a piston will sound like a cam shaft "clack" on hi load, try disconnecting one ht lead at a time and see if it goes away