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engine noise - braintrust help
Hope you can help me with an engine noise. Newly rebuilt engine that makes a clatter sound kind of like valve tappets crossed with an exhaust leak. The sound is loud at idle or when I lift off the gas and goes away entirely when I open the throttle. At 60 mph it is gone with the throttle open constantly. Any thoughts about what could this be?
911SC 1980. |
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05-15-2021, 07:48 AM
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the best to help you would be either make a sound recording or video
Ivan
__________________
1985 911 with original 501 645 miles...807 319 km "The difference between genius and stupidity is that, genius has its limits". Albert Einstein. |
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05-15-2021, 07:52 AM
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Do you have hydraulic chain tensioners?
Is it the chain on a trashcan sound? |
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05-15-2021, 09:20 AM
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Yes, I added hydraulic lifters some time ago. The sound could be described that way. Do you have any idea about how the sound depends on throttle position? I am thinking maybe something is dependent on vacuum.
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05-15-2021, 01:57 PM
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VIDEO VIDEO VIDEO Or this thread wont work.
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05-15-2021, 04:03 PM
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911SC
914
TR6
Truck
