OMC `1974 307 with 4mv quadrajet,

[jrboat2011]

I can't get idle down below 1000rpm or it dies, carb has been rebuilt, Timing is right on mark 8 BTDC need Heip?????

 

[Howard Sterndrive]

Re: OMC `1974 307 with 4mv quadrajet,

check for vacuum leaks - proper carb base gasket
double check firing order