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Platinum/Iridium or NGK spark plugs for 900 S NG 2.3L (B234i)?
Posted by Fredrik O. [Email] (more from Fredrik O.) on Tue, 14 Aug 2018 14:42:46
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Hi fellow Saabers!
The time is up for the spark plugs on the 900 S (NG) -97 that now have a black and partly yellow coating. The workshop forgot to change the fuel filter last service (causing a breakdown since it became completely blocked) and a failing crankshaft sensor has lately been replaced which means that engine has not been running very well for the last months. Now it's hopefully misfiring just because of the plugs.
But what spark plugs should I get? The engine is a B234i 2.3 liter non turbo Bosch Motronic. The handbok say's that NGK BCP 6EV (noble metal) spark plugs should be used. But I don't find any that are noble metal, I only find cheap non specified NGK BCP 6EV plugs on Speedparts and Maptune. A local store offers some very expensive Bosch FR 6 KPP 33+ Platinum/Iridium plugs. But in previous threads (http://www.saabnet.com/tsn/bb/NG900/index.html?bID=274531) it's recommended to stick to the NGK spark plugs if you don't want to damage the engine.
So how important is it with noble metal spark plugs in order to make the engine run well again? Should i go with the expensive Bosch plugs or for the cheaper non specified NGK BCP 6EV?
posted by 92.35.12...
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