Bad timing cause overheating?

[Sidewinded_idi]

if you read I replaced my ip, injectors, and returns last night. Truck runs great but I just set the timing by the mark. I know it’s off as I get a bit of white smoke at idle. But my concern is now going up a hill when I am giving it some juice I notice my coolant temps start to climb instantly. Can the retarded timing cause the temp spike like that or maybe even advanced? I set the pump just a lines width advanced

 

[Hydro-idi]

Your engine might be running a little hotter with a new IP & injectors, especially if the old setup was worn. Probably normal.
I would look into your cooling system. Radiator, OEM thermostat, & water pump. If your running the original stock radiator, that might explain it. They don’t typically last 25 years & get clogged up with deposits.
These engines should always be running at around 190-200. Anything more than that during normal driving poses a problem. That goes for oil temp as well.

 

[Thewespaul]

Yes timing affects your engines overal heat, incorrect timing both advanced and retarded can cause this symptom but it sounds like yours is retarded