Crank, no start?

I’m letting it sit overnight to see if it is flooded as the turnover noise almost sounded like no compression, but it was just running and driving the other day, but I’ll send you the audio tomorrow assuming it doesn’t start. If it does start, then I still have to figure out why.

Originally throwing fuel in it did make it run temporarily which is why I knew it wasn’t getting. Now it is getting fuel and when I threw some in I got nothing.

Also, I think I forgot to mention. If you put your foot on the peddle all the way and crank it, it will backfire hard out the intake after a few cranks. Would this happen if it wasn’t getting fuel or spark?

I pulled 2 plugs out they seemed a little wet. I’ll have to check your link just wasn’t sure how to check for spark on coil over plug since I can’t put the inline spark tester on those.

Thanks for your quick reply.

Here are the videos as requested. The first was yesterday when I wanted to see if the motor was turning over or not cause the noise was so off.

The second is this morning. Still no start but sound more normal in the cranking now.

That is what is so maddeningly confusing to me about this. It is once again running and just fine again now. Yet it cranked like that. So how could it be the timing belt/compression?

I was messing around with it this morning to test for spark like you suggested and showed, had no spark. Did a little research with no spark and people said ASD relay or the grounds below the fuse box there (which looked fine) switched the ASD relay with the horn relay since same relay, and now I had spark, put the coil back in, and it fired up, although with a little bit of struggle and sputtering, but after that fire up first time no problem now

So not sure if what I did had any impact or it was a coincidence as this isn't the first time it magically worked after I was messing around with it, but I didn't touch this before.

Thoughts? This thing has for sure been confusing.

Also, video to show it firing up and how it behaves currently.

Just drive it around too and no engine issues when driving.

Yes, actually they changed the oil on it before they brought it to me to look at, as it was a coworker's vehicle. I don't know what they used but I can do an oil change on it for them and put the correct oil in and see if that makes a difference. On my site it calls for 5w30 or 10w30, would this be caused by too thick or too thin of oil and what do you recommend to use to try? Thanks

I checked and 5w30 Lucas oil was put into it.

Will do, thanks for the help, as this makes sense to me and so far, most things haven't as it did sound like lack of compression yet fixed itself with time or when it got hot enough in the day yet did fine on trips and driving. I appreciate the help and finding a possible solution that fits these weird symptoms. Will let you know.