ctpathy Posted November 30, 2008 Share Posted November 30, 2008 On my sons 91 has a very rough Idel when it warms up could this be a co censer it has new plugs but still has the old cap and wires Thanks for any help with this prob. thanks Brian Link to comment Share on other sites More sharing options...
westslope Posted December 1, 2008 Share Posted December 1, 2008 Could be an air intake issue. Search. Link to comment Share on other sites More sharing options...
Precise1 Posted December 1, 2008 Share Posted December 1, 2008 Check cap/rotor/timing, start looking for vacuum leaks (wd-40 can work well sometimes). How does it run at high idle/under load? What is the milage like? B Link to comment Share on other sites More sharing options...
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