Car starts to miss and is slugish on accelaration , also # 6 cylinder is fouling !
I have a 1977 datzun 280z that have owned since 1978 , 2nd owner, The car has always been reliable , it became hard to pass smog here in california , so i had the engine rebuilt and it smogged fine again , since about 2000 i have not driven the car that much , may be about 10-20 miles a month , i know its insane , suddenly it does not pass smog again ! it always starts and is fine below 3000 rpm ! does this sound like sticking valves or what ? Any ideas would be wonderful ,thank you!
the EGR valve comes to mind...but if it is NEW or has recently been cleaned...you could check operation with a vacuum tool~
your distributor cap is cracked....look for microfractures going to No.6~...carbon traces~
I will get to work right away checking these areas, thank you for somewhere to start my quest !!
these are cool lookin' kind of a Jr level XKE...the Opel GT's are out there still...but quickly vanishing~
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