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Re: Surging at 11 psi fixed (UrQ)
On Mon, 14 Dec 1998 22:39:27 -0600, William Elliott wrote:
>[ ... ]
>My first step this weekend was to replace the other 4 plugs. Unlike the
>first one, these all still looked new. (Bosch tri-electrodes, 8k on
>them). I replaced them anyway and test drove the car.
>[ ... ]
>To my surprise, the car drove like a different vehicle (one without
>missing and surging... and willing to pull strongly to the
>I'm very surprised that these plugs which are known for lasting MUCH
>longer went bad so quickly... with no physical clues... they look
>great... not worn, cracked, etc. (Recent coil, rotor, cap, and wires)
>Any suggestions? I sucessfully use Bosch (NOT platinums) in
>everything... Corvairs to Trabant to SAAB... should I use NGK here?
I've had exceptionally good results with the Bosch tri-electrode plugs
(WR7DTC) in my 1.8 bar engine. Is there any possibility that your
particular plugs were not the proper heat range for your car?