hey ive been having a problem with my engine rumbling and was looking for a point in the right direction cause its starting to get annoying. Well my alternator died on me ive replaced it and now everything is working fine it seemed to run straight off battery power after it finally flopped but anyways now ever since my engine seems to be misfiring idling its not a constant rumbling but more of a one two give it a second another one two rumble. when driving if i keep a constant cruise speed of about 45 it rumbles like its about to fall apart but if i speed up anymore or let off the gas a little it stops and drives fine.

im kind of lost looking for some tips pointers anything to help.

 

Im not to sure what you mean by "Rumble" But have you checked the plugs and wires?

 

no ill check that in the morning but what i mean by rumble have you ever known a car to just shake? well it does that but maybe for only like 2 pistons im guessing

how do i test the plugs? i know how to in like gocarts and dirtbikes and stuff but never did it in a car is it the same concept hold it on some metal turn the ignition or what?

 

just if anybody cared i had an engine misfire because of a bad spark plug.

 

thanks, Ive been having occasional misfires when starting, it doesnt happen very often, but when it does it is an eye opener.
my first thought was I was turning the ignition too soon and not letting the fuel pump get going, but I started waiting an extra second before starting and it still happens occasionally (although, not quite as often)
guess I'll check my plugs n wires tomorrow.