4 channel amp issues

I am having some issues with the right side speakers that are hooked up to my 4 channel amp. I am getting engine noise like crazy. but it is only on the right side. I have double checked all my grounds and power lines. I have my power wire running down one side of the car and the rca along the other. it happens no matter if hooked to channel 3&4 or 1&2. if I hook them up tot he left side, no noise. could it be the rca wires? it is a stinger set, so kinda thought they were half decent brand. or am I looking at something wrong with the amp?
any suggestions would be appreciated.
amp is a 4300 jl. speakers are infinities 5.25's and 6x9's. approx. 80-100 rms for the speakers. amp is a 300 rms or 75x4 rms I think.

are you using passive crossovers ?

being a complete newb when it comes to this stuff, what are they?

are these coaxials are seperate mid & tweets ?

Are you saying you switched amp wires and the noise stays with that speaker ?

no, not separate mids and tweets. all in one. what happened is when I hook the right side speakers up to the right side channel on my 4 channel amp, I get engine noise on the speaker. if I hook it up to the left side speaker, I get no road noise.

no, not separate mids and tweets. all in one. what happened is when I hook the right side speakers up to the right side channel on my 4 channel amp, I get engine noise on the speaker. if I hook it up to the left side speaker, I get no road noise. amp could be bad. Try hooking up the right speaker to the left side... Try hooking up the right side on the amp directly to the speaker by the amp, and then if those are ok you should probably either get a larger guage wire or move the wire to the opposite side

since you haven't physically moved the speaker wires, it's most like the amp or speaker wires - although it is rare to have noise inducted into the speaker wires because the load is low (4 ohms or less).

finally had a chance to look at it. I hooked up a ground loop isolator on the rca cables and it took the noise away. I have just switched to a newer pioneer 480 premier HU and am wondering if I will have to have one of those isolators on each rca out? right now I only have one set of rcas because my old head unit only had one set of outs. I want to run seperate rcas fro fronts rears and sub, but not really wanting to use 3 of those ground loops. is there something i have missed in the install that causes this to happen?
Thanks for any info you guys can give me.

Hopefully you aren't using a scochse ground loop isolator from walmart. I bought one once and it worked...untill well, it just stop for no reason. Why not try it without the isolator. It could be something in the HU or maybe the amp.

Did you try changing the RCA connections on your amp for troubleshooting? You said that you switched the right and left speaker wires... did you switch the right and left RCA's? Just flip em around and hopefully the noise will also flip to the left side. That would only leave a possible bad HU, or bad RCA.

The bad RCA would be best since you already have to run more of them for your new HU. If it's not too late, try also switching the rca wires around at the old HU outputs. If the noise then transfers to the other side it would be the RCA.

I had not tried switching the rca's around. just the speaker wire. I will try that and see. it isn't the head unit as i ma now using a newer one and the noise was still there.
the isolator was bought from a local stereo shop. could be a cheapo, not sure.
I will try and switch the rca's and see what happens.
thanks guys.

I tried switching the rca's around. the noise still stayed with the right side speakers only. no materr what side they wee plugged into. I used the isolator on the front speaker outputs on the head unit. I did not use one on the rear or sub outputs. so far it has been quiet. but would liek ot get to root cause of the noise.
thanks for the suggestions so far and keep em coming.

is your remote wire running down the same side as your rca's if it is sometimes it wire give of a buzzing sound or any type of noise

how many sets of RCA's are you running ?

I am running 3 sets of rca's. I will check the remote wire, but it may run the same side as the rca's. I will try and relocate it. any tips on running the remote wire? like stay away from just the rca's or stay away from speaker wire etc..
thanks for the help so far.

any luck yet?

make sure all 3 sets of RCA's are as close together as possible .... if not, what you end up with is loop area noise induction (the "loop" is made by any space between them). Try tie-wrapping them all together.

all 3 rca's are run together down the one side of the car. I haven't tie wrapped them togehter or anything, but they are all together. will the remote wire cause any of this?

not likey, but anything is possible ... and tracking down a noise problem can be quite frustrating