Runs Posted August 22, 2006 Share Posted August 22, 2006 I have a 1990 LS 400 with 110,000 miles. After I replaced the spark plugs with new titanium plugs the engine misses at an idle. Seems to run fine at higher speeds and you just feel an occasional bump at idle. What could I have done wrong??? Quote Link to comment Share on other sites More sharing options...
SKperformance Posted August 22, 2006 Share Posted August 22, 2006 You have bad wires ,buy a new set. Quote Link to comment Share on other sites More sharing options...
Runs Posted August 22, 2006 Author Share Posted August 22, 2006 You have bad wires ,buy a new set. Thank you. Do you know of anywhere online where I can buy lexus parts at reasonable prices. Quote Link to comment Share on other sites More sharing options...
SKperformance Posted August 22, 2006 Share Posted August 22, 2006 iron toad rockport sewell longo lots of options. Quote Link to comment Share on other sites More sharing options...
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