engine noise - valves

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geert
Posts: 107
Joined: Sun Dec 20, 2009 11:41 am
Your car is a: 1977 1800spider
Location: Bruges, Belgium

engine noise - valves

Post by geert »

Hello,
would like your help concerning engine noise.

Good working motor but lot of noise -valves I think - even when motor is hot. I checked valve clearance

In the topic " loid engine noise" you ( = the Forum United) talk about a possible leak in exhaust causing this kind of noise.
And using a stetoscope to finding the solution ( or the cause).
could you give some more information ( what should I have to hear, ( sound of leaking, the valves but louder ?..)? )or other causes ?

thanks in advance,

groeten, Geert.
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azruss
Posts: 3659
Joined: Sun May 30, 2010 12:24 pm
Your car is a: 80 Fiat 2000 FI

Re: engine noise - valves

Post by azruss »

if your tolerances are out to the maximum, you can get lots of valve clatter. I assume you have also checked to make sure you are getting oil to the cam.
On the subject of an exhaust leak, you can use a rubber hose as a stethoscope. put one end in your ear and run the other along the seam between the head and the header. if you have a leak, noise will be much louder at that point. mine always leaked just below the dizzy. also, the outside corners are most prone to leak.
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