GDP1974 Posted May 28, 2013 Share Posted May 28, 2013 My 98 Classic has developed a misfire/hesitation @ around 5000rpm... The engine is standard accept for a 3" decat No Trouble Codes Any Ideas Quote Link to comment Share on other sites More sharing options...
odessey Posted May 28, 2013 Share Posted May 28, 2013 Does it only do it when driving? Quote Link to comment Share on other sites More sharing options...
Gambit Posted May 28, 2013 Share Posted May 28, 2013 tough one with no codes :( Maybe Plugs, Coilpacks, Fuel filter but would think you would have that in low revs also. Have you have the ECU remapped since have the decat put on I would maybe swing with that being the problem :) 1 Quote Link to comment Share on other sites More sharing options...
scottishtaffy Posted May 29, 2013 Share Posted May 29, 2013 with no codes then i would say coil packs. but firstly i would change the plugs. cant go wrong with iiridium ones. could be fuel starve higher up also. what pump are you running and when was the filter changed? 2 Quote Link to comment Share on other sites More sharing options...
Gambit Posted May 29, 2013 Share Posted May 29, 2013 Agreed. And I hate that I agree with scottishtaffy he's like my better looking step brother that stole my girlfriend ;) 1 Quote Link to comment Share on other sites More sharing options...
scottishtaffy Posted May 31, 2013 Share Posted May 31, 2013 :lol: :lol: Quote Link to comment Share on other sites More sharing options...
GDP1974 Posted June 3, 2013 Author Share Posted June 3, 2013 Problem solved.... I changed the plugs to RB7S and the misfire has gone... THANKS TO ALL THAT REPLIED 3 Quote Link to comment Share on other sites More sharing options...
scottishtaffy Posted June 3, 2013 Share Posted June 3, 2013 jobs a good un :D Quote Link to comment Share on other sites More sharing options...
Jay762 Posted June 3, 2013 Share Posted June 3, 2013 result!! Quote Link to comment Share on other sites More sharing options...
Gambit Posted June 3, 2013 Share Posted June 3, 2013 That's what I like some good news :D Quote Link to comment Share on other sites More sharing options...
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