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Date: 26 Dec 2001 04:44:03 -0800
From: johsnopsamanytime.co.uk (Johannes H Andersen)
Subject: Re: correct spark plug(s) for '92 9kS please!


fatpandanopsamcom (Saabuddha) wrote in message news:<46a89d83.0112252140.76f261f6nopsaming.google.com>... > thanks a lot ken. you've reinstilled my confidence in my first choice > of plug, the bosch plat +4 plugs, which i removed after 500 miles b/c > of other advice, even when they were performing excellent. i went > from the NGK BCPR7ES plugs, to the bosch, and it was a nice, noticable > difference. i've actually just now finished reinstalling the bosch > and hope to have continued success with them. the NGK's just removed > (for the second time now!) were some new BCPR6ES that i bought in fear > of damaging my DI system with the bosch. the NGK's just made the car > sound horrible and i noticed the sounds of almost a backfiring? as i > let off the accelerator while reving the engine in idle/neutral. with > the bosch back in, it has already started to go away. thanks again, > wish me luck. > > Saabuddha Always something to learn. But I'm puzzled and a little annoyed that there should be so much difference between the Bosch plat +4 and the NGK plugs for your car. Maybe the gaps were too large after all or the Bosh cover up for some deficiency in the system. It could be insufficient high tension voltage. Backfiring is caused by un-ignited gasses being ignited by meeting up with hot gasses from the other cylinders. A CAT killer! My engine is a 2.0 LPT with NGKs, and it it as smooth as silk. Anyway, good luck with the Bosch plat +4 plugs. "If it works, it works". Johannes

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