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Need help engine is acting wierd

647 views 3 replies 3 participants last post by  Carpe Diem 
#1 ·
Hey can someone help out. I have a 91 miata and it sounds like it's misfiring at about 1500. Only when I step on the gas pedal and sometimes when I drive and let the rpm drop it drops under idle and sometimes even turns off. Does any one have an answer
 
#2 ·
Sounds like you need to replace spark plugs and wires. Might want to check the plugs for oil, mine misfired at about 1500-2000rpm and had oil on #3 and 4 plugs. I needed a new valve cover gasket and wires/plugs, fixed the misfire.
 
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