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Re: Bosch Platinum Sparkplugs
Posted by Larry West (more from Larry West) on Thu, 24 Feb 2000 18:55:38
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00

My personal experience with them was a severe hot running problem, to
the point that if the car idled for any length of time in hot
weather, the car would shut down. Going back to NGKs (old, used ones
at that) provided a noticeable improvement.

Also, your car has Trionic with Direct Ignition. The spark plug is an
integral part of the knock detection system. I suggest you use ONLY
the recommended plugs, and at the recommended gap.

The Plus 4s had an unknown gap, but it was substantially larger than
the spec for my 1986 900.

Saab specs the NGKs. I'll stick with that.

Larry West
NJ Saab Owner's Club


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