I just purchased a 1986 monte carlo with 305 v8, this car is in wonderful condition, all seems perfect accept engine seems to surge and hesitate at a stop light,, and at low speeds seems to like surge in and out, but when you mash on the gas, she is strong.. Maybe someone can tell me what this sounds like please btw, i changed fuel filter, and still problem. any help would be appreciated, thanks

 

 

yeah a little bit more info would be good . but it could be timing related

 

thanks for your responces,, i have replaced plugs, wires, cap rotor button, and still has the problem. This car appears to have the quadrajet carb, its 100 % original, and only has 55,000 org miles, it is a really beautiful carlo,, pics are on the way.. Could this be fuel related? jus need some help please thanks

 

olmost sounds like the torqe converter could be locking up incorectly

 

may have a vacuum leak might want to check the lines off the carb.

 

had same prob with 87 305. mechanic disconnected and plugged some vacuum thingy, EGR valve maybe?? or vacuum advance on dist?? not sure, i'll check it out under my hood and try to get back to you tomorrow. anyway, i havnt had the surging problem since.

 

Under the hood, removal of the EGR will eliminate surging and increase cruise gas milage at the expense of some increased NOx. Removal of all vacuum lines feeding it will accomplish this.

 

is the carb and distributor stock? if there is a different carb and vacuum advance dist, could the vacuum advance be stuck?