Stock cars trouble with initial startup of the day

[know1]

Hey guys, I'm having a little trouble and can't find anyone with a similar problem on here.

First a little history, Car is a 94 SS, coffee mug mod and de snorkled, but otherwise stock. Recently wouldn't pass emissions so I replaced the O2 sensor (and reset the ECU) and it passed (barely). A friend suggested "Seafoam", so I put a third of a can into my gas tank after filling up at a gas station. Everything was running normal for most of the tank.

Now for the problem, as I said earlier for most of this tank (the one with the seafoam in it) the car has run uneventfully. Now that I am getting close to the end of my gas tank, however, it has started having a funny issue. During the first start of the day (and only the first start so far) the car wont turn over. I put my key in, turn it, the lights come on, everything seems normal, but nothing happens. There is a little click sound that comes from my engine at the moment I turn the ignition to start, it only clicks once and then nothing happens. After trying to start it ~10 times it will go and run fine the rest of the day.

Any ideas?

[Legacy777]

Possibly starter solenoid contacts.

[SubaruNation]

i would dump the rest of the seafoam in... maybe it liked it alot jk

ya i agree with ^^ check your contacts.

i doubt it would be battery or terminal connections but you never know.

see if the ground ( i think) to the starter bolt... attachment is connected well also

[SubaruNation]

oh, and if it's any help make sure your car's security system isn't messin with your stuff too much..

i dont know what ICE you have but that will definitely do it