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Old 03-25-2006, 02:54 PM
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Duty cycle 500 SL Euro

Hello all,

I performed the overhaul of the V8 intake manifold as shown on the pindelski site. The car runs rougher than before the overhaul despite new injectors and replacement of a cracked intake vent valve. Is it possible that the car had been adjusted to its earlier vac leak that I fixed and hence is now out of proper adjustment? I am getting terrible gas mileage and thought maybe it was too rich. I thought I would test the duty cycle, but my pin 3 in the diagnostic plug is blank. Any thoughts on this? Don't be afraid to speak in lay terms as this is all new for me. Thanks in advance. I searched the site and found some good information, but I need a little help navigating this problem.

Rich Mayer
82 500 SL
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