odiie Posted May 25, 2009 Share Posted May 25, 2009 Couple of questions, I just bought an 86 R model with a 350 6 cylinder in it. I was told it had a miss in it but it drops rpm on all cylinders if you crack injection lines. Any other way to find a miss? It was idling at around 800 rpm because of a jake switch interfeering with the throttle rod. Could it have sounded like it was missing because of the fast idle? Also on the injection pump right above the throttle shaft is a screw in a long locknut(the nut is about half inch high) what is it for? Idle stop? Thanks for your help. Quote Link to comment https://www.bigmacktrucks.com/topic/9488-86-engine-questionscouple-of-questions/ Share on other sites More sharing options...
fjh Posted May 25, 2009 Share Posted May 25, 2009 Couple of questions, I just bought an 86 R model with a 350 6 cylinder in it. I was told it had a miss in it but it drops rpm on all cylinders if you crack injection lines. Any other way to find a miss? It was idling at around 800 rpm because of a jake switch interfeering with the throttle rod. Could it have sounded like it was missing because of the fast idle? Also on the injection pump right above the throttle shaft is a screw in a long locknut(the nut is about half inch high) what is it for? Idle stop? Thanks for your help.idle stop yes. you were told it had a miss? Do you hear a miss? Quote Link to comment https://www.bigmacktrucks.com/topic/9488-86-engine-questionscouple-of-questions/#findComment-35668 Share on other sites More sharing options...
odiie Posted May 26, 2009 Author Share Posted May 26, 2009 idle stop yes. you were told it had a miss? Do you hear a miss?I can't hear a miss it just sounded strange because of the high idle I think. Just makes me wonder if I'm missing something ya know? Quote Link to comment https://www.bigmacktrucks.com/topic/9488-86-engine-questionscouple-of-questions/#findComment-35704 Share on other sites More sharing options...
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