Question , What is the " Plastic Bottle Method " ? I have done purges on my 03 Suburban where I use a vacuum line on the intake to draw some into the manifold and let it soak before a restart and driving ( Mucho Smoke).
Alan

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92 500E Silver 66k
82 Porsche 911SC 84K
68 Cadillac ( Gone Now )
03 Suburban Z71 200K
85 300SD 217k From Original Owner ( Dad )