Howdy guys..I have a 87 420 SEL . I just purchased it and have a Question about smoking at idle...seems like if i run dont the highway at 65 for 20 miles it is fine...no smoke..but..if i sit and idle..it will start to puke out a very light blue smoke...and..when i take off, it blows a ton of bluish smoke..but just for about a block..then nothing is noticeble...and..it doesnt smoke upon opening the throttle after a long closed throttle decel down a grade..and.it doesnt smoke at cold start..like over night....any ideas?...car has 210k ..
and....is the 420 close to the 560 in the way you change chain guides and tensioner?..thanks for your help