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Just changed my spark plugs in my 1989 Volvo 740 turbo wagon. I asked for basic NGK copper plugs. They did not have them so the sale rep. told me NGK BPR6EGP would be a better performance plug. Pulled the car into the shop, pulled all 4 plug wires and 4 Volvo brand spark plugs. Cars been running really great and Distributor is new along with injectors, Ignition amp modular,Fuel pump and new relay, Radio relay is also new along with the AMM.. So The cars been running like it should up until I changed the spark plugs to BPR6EGP NGK. Finished installing the recommended plugs and now the car fails to have spark. Test the injector wire with a NOID Light and failed to flash. Switch out the Ignition Amplifier on the fender with a know replacement. Still no spark. Any Ideals on why changing the plug out to NGK BPR6EGP kill my 740 ???
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