has engine blown loud rattle knock - Alfa Romeo Forum
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has engine blown loud rattle knock

for some reason through the week i could hear a rapid tappin noise making my car sound like a diesel well i came off the motor way gear`d down and a mega loud rattling rumble noise like 2 marbles rattling in my car (when i gear`d back up from down it was not as loud)i came to a stop and the engine said immobilised !!! started panicking tried turnin it over finally got it turned over but only with shed loads of gas , so i got it recovered home ,
this morn well 10 mins ago i went to start it it starts up ok just really bad rattling noise, from the engine , its got oil in , cant see any leaks , and it dont need loads of gas to stay on i only left it running for 3 seconds, ill try get an audio clip uploaded
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Re: has engine blown loud rattle knock

Dropped a valve maybe?

Get a compression test done to be sure.
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Re: has engine blown loud rattle knock

Again I would suspect a slipped belt or big end failure OR both. The engine needs surgery no matter which but I'd start with the sump off to check the big ends if I was convinced by the noise.
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blown , engine , knock , loud , rattle

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