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Engine knocking

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Old March 24th, 2021, 7:14 PM
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Default Engine knocking
Help please.. so we got a 1978 chevy c10 w/4.1L -250 ci developed a knock, so i replaced the rod bearings and main bearings, also inspected the lifters it’s still got a slight knock, could it be bad cam bearings cause i can take the fan and wiggle it up and down, not alot but it shouldn’t move right? Any help appreciated
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Old March 24th, 2021, 8:16 PM
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Originally Posted by 85s10
Help please.. so we got a 1978 chevy c10 w/4.1L -250 ci developed a knock, so i replaced the rod bearings and main bearings, also inspected the lifters it’s still got a slight knock, could it be bad cam bearings cause i can take the fan and wiggle it up and down, not alot but it shouldn’t move right? Any help appreciated
You can take the fan, as in radiator fan, and move it up and down? That would be a water pump issue.
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Old March 25th, 2021, 7:55 PM
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Originally Posted by kevinkpk
You can take the fan, as in radiator fan, and move it up and down? That would be a water pump issue.
now i have lost timing in the p.o.s
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Old March 25th, 2021, 8:48 PM
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Originally Posted by 85s10
now i have lost timing in the p.o.s
All I can say is ?
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Old March 27th, 2021, 3:24 AM
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Originally Posted by kevinkpk
All I can say is ?
i meant to say was i lost spark, not timing... lol, figured it out it was the module in the distributor
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