Re: 4gc woes

Posted by d c On 2016/4/27 19:27:53

Yes. The weak secondary return spring and poss misalignment of the secondary throttle blades (if they were removed at rebuild)will contribute to the blades not seating at idle. If you have no experience adj the base idle and mixture with a vacuum gage further discussions may be beyond the scope of DIY repairs. There is a detailed adj procedure for all linkages in the svc manual which must be performed during the rebuild before any on car adj. are you running an electric fuel pump or just the mechanical? Do you have the proper 4gc for this application? If so it should have the removable plugs in the bowls. Are you sure the floats are set properly and not sticking? Are the needle and seats updated to disc and seat or original?