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Plug gap...
Posted by Joe98 (more from Joe98) on Wed, 15 Jan 2003 10:57:39
In Reply to: exhaust backfiring!, Traffic Shark [Profile/Gallery]
, Wed, 15 Jan 2003 09:03:38
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Has happened to me in the past with the same exhaust system, and it turned out to be that the plugs needed re-gapping.
If I run with 0.90mm gap, I get slight backfiring/stumble during idle. But I notice I get very nice throttle response with that gap.
When I run with 1.10mm gap, the backfiring disappears, but so does the extra performance that 0.90mm was giving me.
Guess I will have to try out 1.0mm (Saab recommended gap) and see if that offers the best of both worlds.
But you should check the plug gaps before it damages your DI. I put in new NGK plugs, gapped to 1.10mm, ran them for close to 5K miles, then checked them and found them to be way bigger than 1.10mm!!!!
Joe
'98 CSE 61K
posted by 12.111.48...
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