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Old 11-01-2011   #1
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Hissing from engine?

i've just noticed a constant hiss coming from my engine, it only starts once the engine has warmed up but then continues as long as the engine is running, it sounds like it is coming from under the plastic engine cover, i'm gonna take it to the garage next week but if anyone has any idea whats wrong with it i could do with the info?
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Old 11-01-2011   #2
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Re: Hissing from engine?

Snakes alive!

If you have a coolant leak you'd probably see steam, or fluid leaking. anything under the car? Are all the caps on tight?

Does the temp gauge climb above half-way?
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Old 11-01-2011   #3
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Re: Hissing from engine?

Quote Originally Posted by Mozarella View Post
Snakes alive!

If you have a coolant leak you'd probably see steam, or fluid leaking. anything under the car? Are all the caps on tight?

Does the temp gauge climb above half-way?
nothing but a hiss, no leaks and dials seem to be working fine?
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Old 11-01-2011   #4
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Re: Hissing from engine?

spark plugs all in ok? manifold tightened up properly or cracked. I have seen my brothers exhaust manifold, where the flexi joins the downpipe, to be leaking and smoking quite badly on full throttle
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Old 12-01-2011   #5
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Re: Hissing from engine?

Inlet? Airbox leak/hose?

Gollum trapped in air filter? Jeepers. What can this be?
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Old 12-01-2011   #6
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Re: Hissing from engine?

Check the crank case breather hose.....
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