MC2100 Tuning

lundi 7 avril 2014

Hey guys i have a MC2100 on my 4.2 engine. I was wondering if this situation is normal. Okay when i hook up my vac gauge to my manifold vac i tune the jets until i get max vac which is about 19psi. my question is my idle screw is turned all the way out so i cannot lower the idle. do i need to set idle screw to have room on both sides to lower/raise the idle once the jets are set? it idles at about 900 rpms i want to get it down to about 750rps. thanks guys




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