New to the Gbody! Need help...

[ROBNUTZ]

What's up guys?! Just picked up a 1986 Monte LS/305. Love the car so far...I did a full tune up but having a small issue. When I'm sitting at a stop light or sometimes even if I slow down and get back on the gas, it seems like its bogging down, takes a couple seconds to get together and take off again? I replaced the fuel filter/ plugs wires/ cap/ rotor/ oil and filter during the tune up. The temp never seems to get above 125* and always condensates out the exhaust like its always cold? My thoughts were the T-stat is either stuck or missing all together and possibly keeping the electric choke on (if this is possible) please help. Thanks in advance -Rob

 

[carl]

check the oil & antifreeze make sure they are not mixing & that the antifreeze isn't disappearing without a leak. I guess the condensation is white smoke and it don't go away, seen mostly on acceleration.

 

[ROBNUTZ]

I have checked the oil for the possibility of a blown head gasket but it still looks fine, the heat works also. Its definitely condensation and not smoke.

 

[CaliWagon83]

Also, make sure the oil isn’t “milky” looking. That’s an unfortunate telltale of coolant leaking into the oil system.

 

[lilbowtie]

The temp not getting over 125 - that's awful low even with a stat stuck, check the gauge and if your going to look at the stat you may as well replace it. Re-evaluate after operating at correct temp.

 

[Sævar Örn Eiríksson]

check the accelerator pump on your carb is working could explain the take off hesitation.. it should give a nice squirt when you first open up tge throttle

 

[B's 87mcss]

Possibilities to check, one spark plug wire not all the way on, wire in plug cap not connecting all the time, or shorting across to manifold or header, vacuum line off or cracked, For sure Accelerator pump can be screwing with you. check you have good water circulation by looking in the rad, water should be moving around and no bubbles, bubbles indicate a leak somewhere, also do this when engine is cold, don't want you getting scalded. Good Luck!

 

[paul.m]

If none of the advice above solves the problem , get a can of carb cleaner start engine and let idle as you spray short burst of cleaner around base of carb . If it revs up you have vacuum leak !