Date registered: Dec 1998
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Re: Rough idle at operating temperature
I had this problem on my '82 280SE which went away when I replaced the plugs with Bosch copper core W8DC. (The manual recommends W9D with Aussie spec pollution control gear fitted, other-wise W7D factory spec)I use LRP 98 fuel here in Australia. Car now runs as smooth as a baby's bum with no smoke. <br> <br> By the way, the old plugs looked clean and did not appear worn, so maybe one one or possiblt more were faulty. This was a cheap 'fix' !