idiling problem
 

i have an 86 iroc z28 305 tpi that is a really rough idle when first started once it warms up it smooths out somewhat but putting a load on the motor will put it right on its face ive been told battery what do you guys think also when i put a load on the motor it will back fire quite frequently and im just going crazy any idea where i might start guys

wow, one giant run on sentence! lol it could be alot of things. check engine light on? fuel filter/injectors could be clogged, timing could be out, to name a few

lol sorry about the run on sentence

have you looked at tuneup parts?

yea its got new plugs i think im gonna replace the wires

double check the gap. ensure the wires are routed correctly, replace them if you feel you should. with it idling, try pulling one wire off at a time with insulated pliers, see if removing one doesn't affect the running of the motor.

deffinately check the injectors and the timing, possibly a leaky valve or possibly the feul pump, i had a similar problem on my 87, all i had to do was mess with the carb and distributor a lil bit