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Need help finding causes for random multiple cylinder misfire on my 96 FWB.

3638 Views 6 Replies 4 Participants Last post by  cadillacmike68, 
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The other day my check engine light came on again,second time in the last few weeks, and then went back off the next day.

It happened while my car was sounding like it was gonna turn off, and it was shaking... I got the codes ran and it was a po300, multiple cylinder misfire..

I got all of my spark plugs and my opticap replaced last year... It feels like my cars running on 7 cylinders or something, and feels maybe like one of the spark plugs is bad or unplugged because sometimes when im idling my car starts to sound like its gona die and starts to shake...... I do have an exhaust leak, but What do you think could be the cause of this?
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cadillacmike68
RThere is a coil wire, it's the 9th wire on the Opti.

You mentioned changing plugs and opti but not wires, i recommend changing the wires as well, they do go bad.
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