i have a 1997 lods van,and the eng,light came on,put plugs and selder but stell runing bad,help.
said the 3d selder was not fiaring and needie plugs put new ones on but the light is stell on and stell runing bad,what do you thank?what could it be?
So you have a code stating a misfire on cylinder three, and you've changed the plugs with no effect, correct? How are the wires? Was there oil on the wires plug boot when the plugs were changed? How is compression on said cylinder?
changed wires and plugs still runing bad.high rpm`s and not a lot of get up and go.
If you can get the codes (using a universal scanner) you can research the codes online. It's hard to give you suggestions. Unfortunately, with a check engine light - it could be ANYTHING. Depending on where you are, you can get a scanner from PepBoys, or Canadian Tire for around $100 (U.S. or Canadian) and then you'll know exactly what it is. Best investement I've ever made.
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