temp spike will they be ok?

They could still be alive, wait it out.
Do you candle?

My last hatch I had temperature spikes, and turning problems and got 90% hatch rate, just make sure it doesn't happen again during incubation.

LG= Little Giant?

I used to have a Little Giant and it always spiked and never got good hatches, you might as well upgrade to a hova-bator there the best

What kind of eggs you got in there?

 

I dont think it will hurt a thing, why are you only expecting 4 chicks?

 

Usually temp spikes like you are talking about dont effect the hatch that much. I would not worry. However spikes greater and longer, should be of concern. Just keep an eye on the temps and try to correct it when they start.

 

i had a temp spike of 110 and some hatched i dont think it hurt yours

 

I can see this driving you crazy until you are at day 21! I have a feeling you MAY end up with more then 4! I sure hope things are ok...104 isn't TO bad! I think they will be ok.

 

Oh my, this just has to be the most perfect timing. Check out these old hatching directions Davaroo posted. Look at the suggested temps. Hope this makes you feel a little better.

https://www.backyardchickens.com/forum/viewtopic.php?id=73069

 

I just hached 6 out of 7 in the last 24hr's. The temp's spiked to 105 for maybe 4 hour's on day 18 when I moved them to the hatcher. Boy was I happy to see chick's. I just checked the last egg and I saw movement so maybe that one will hatch too. Good luck but why only 4? Soon as you see them you will be addicted. Trust me.

 

I get 104 temp spikes in my LG still air all the time, it does not affect my hatch rate. I usually just lift the lid to the bator for a few minutes and then go on my way. You'll be okay.

-Kim