Hello. My 470 will runs good but does not idle good if I throttle it up it runs good but when I go in to neutral the rpm is between 750 to 800. For about 2 min then goes down like 400 500 rpm engines shakes .
If I rev it up a couple of times it idles good for 2 to 3 min then back down any ideas thank you
If I rev it up a couple of times it idles good for 2 to 3 min then back down any ideas thank you