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90 ZR-1 -rough idle and knock

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12-11-2020	#1
1971 Judge Join Date: May 2017 Location: Grapevine Posts: 56	90 ZR-1 -rough idle and knock Gents, Need your input here. 34k mile ZR-1. Always maintained. Upon start up, she's' rough on idle and knocks loud and bad. No smoke, no odors...just sounds horrible and pretty much won't drive. Injectors...? Advice...? TIA. Here's the video: https://youtu.be/4pMqqsoofvE __________________ -------------------- 2008 Black Z06 3LZ 1990 ZR-1 #1797 1979 Trans Am 1971 GTO Judge tribute

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