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Tahoe & Suburban The power, space, and brutal towing ability make the Tahoe and its longer sibling, the Suburban, arguably the best full size SUV's on the market today.

2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

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  #1  
Old 03-11-2011, 12:16 PM
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Join Date: Jul 2009
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Default 98 tahoe timing question

I have an 98 tahoe with a 5.7 i was wondering how to set the timing. i have read on here to use a scan tool. so i got a bluepoint YA3140 scan tool. heres so of the live readiings map 9.1 ,eng rpm 650, spark adv 22, maf .808 . no matter where i move the dist. the spark adv. stays between 22 - 24. i have read it should be 0 +/- 2. it runs ok but starts hard some times. any help would be greatly appreciated.
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Old 03-11-2011, 06:07 PM
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Spark advance is not the correct item. You need to look for "cam retard" . Also after each turn of the dis you must snap the throttle above 2000 rpm to update the reading.
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Old 03-11-2011, 06:07 PM
 
 
 
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