280z knock problem - please help with input!

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KenSR20
Posts: 73
Joined: Mon Mar 31, 2008 3:51 pm
Car: ???? Nissan S13 hatchback

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I have a 1976 280z and when I crank it up it has a light knock

it sounds like the valves are loose but has been adjusted 3 times.. was told it could be timing chain hitting the chain guide.. with valve cover off it seems to be comming from a valve.

Anyone have any ideas it would be great!

Thanks


profotoiam2
Posts: 8
Joined: Fri Aug 22, 2008 11:53 am

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i had a knock as something similiar spend the 115 bucks from local auto supply store and put new valves in i screwed up i put mine in to late

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evildky
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Joined: Sat Jan 31, 2004 9:23 pm
Car: 71 Datsun 240ZT
87 Nissan 300ZX N/A-T
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youight want to have someone more experienced look at it, a "knock" makes a sort of "clack" noise, a bent or stuck valve makes a "tick" noise and of course having the head reworked is less involved and less expensive

KenSR20
Posts: 73
Joined: Mon Mar 31, 2008 3:51 pm
Car: ???? Nissan S13 hatchback

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Thanks for input will do !!


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