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Discussion Starter · #1 ·
just recantly every once and a while, when on the gas my ca18 would miss fire. so i changed the plugs, i put in bosh platnum +4's. at first it was working fine, but after a few hours of driving, it started again and got really bad. it will run fine up and till i hit full boost then it starts to miss frequently.

Any ideas of what it could be, or some where to start looking woulkd be great help. I have access too a mechanics shop so any tool i may need i will have.

ohh ya i this is in my 89 silvia
 

· All over your face!
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7,106 Posts
Sounds like improper heat range on your plugs. I had the same type of problem on my old DET sentra. I would recomend getting either Denso or NGK plugs only too. Bosh anything is crap IMO. Your probably going to need a cooler plug. What do the plugs look like?
 
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