Thread: 496 fouling plugs

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If this is a self learning system, you will never get it to work starting off at 9200 feet if you foul the plugs in 6 miles-----------


You could take the car to a lower altitude and start there , let it learn, and then drive it progressively back to the higher levels--maybe-----------


The highest pressure that the map will read will be the baro at 9200ft----------and it that reading it will flood the engine with the duty cycle injectors he probably has-----MAP does not compare anything to any thing--it is the ABSOLUTE pressure in the intake manifold where the sensor is located----------it will (on an NA engine) it will always be equal or less than baro at that altitude, never more (unless supercharged)------------


And on many builds/tuning deals that I have been involved wit, it has been almost a consistant occurrence that many basic auto things have had one or several discreps that violate the tuning process==== exhaust/vacume leaks, temp sensors mounted (or completely missing) Teflon tape, poor grounds----------this fouling plugs in 6 miles 10 minutes-------SHOUTS out the likely hood of more than one, possibly several ----------

Originally Posted by jerry clayton

....You could take the car to a lower altitude and start there , let it learn, and then drive it progressively back to the higher levels--maybe-----------

Now that's a great idea if it's something that works for Bob. It may be fouling the plugs before it can "learn" the baseline. Bob, call Jeff Robbins at Edelbrock, and see what he says about this approach. He was a key member of the E-Street development team for more than a year, and knows their EFI systems backwards and forwards. I'll PM you his direct number.