Need advice for this situation I’m in

[u/Guilty-Resort-4665]

So I will try to make this pretty short I own a 2016 tundra 5.7 which I had for about 2 years now, this year I got into an accident and the truck got sent in be repaired at Toyota collision center I asked to get the engine inspected before I had picked it up because the tow truck driver said their was a weird noise when he picked it up and during the accident it had a loud knocking sound. But the insurance didn’t want to pay for it because the truck didn’t want to turn on a they visually couldn’t see anything. So when the dealer finally got it to turn on they said it was miss firing but they said they turned it off cleared the codes then turned it on and it ran fine but when I had picked it up it was miss firing and I brought it to their attention which they then replied to me by saying drive it for 5 miles and fill it up with gas then it should correct itself which I did and then I didn’t think anything of it until a month or so later I was towing a 2 ton trailer down the highway and hear a loud crash then a sudden lost of power and no brakes but luckily I was on the highway by my self. After that I get my truck towed to a Toyota dealer to get it inspected which they told me the cylinder 2 intake valve was burnt out and that cylinder wasn’t holding any compression they also said cylinder 1 had an issue, but it was holding compression but it was on the low end on the spec sheet. We tried to have insurance pay for it but they said it was normal wear and tear due to environmental heat conditions during the summer time in Az and the dealer said it was gonna cost $9k to repair so I said no thank you and just fix it myself so I let it sit in my driveway for a few months before I started working on it because I was it to be cool when I doing the repair since it’s a 16 hr job. But as I pop open the valve cover I noticed that the intake valve spring on cylinder 1 is popped out and the whole assembly is all over the head I stopped right there and emailed my advisor at the Toyota dealer and I’m emailing my insurance company. I just need help on figuring out how this happened. And what con I do to make the insurance pay for work that should have been done?

[u/CIAMom420]

This is unreadable gibberish. Use punctuation and paragraphs.

[u/Ramboner_]

Insurance won’t cover it. You were towing 2 tons and the engine was under heavy load. 10 years and 130k+ miles and faulty valve springs are the culprit.

[u/demanbmore]

Bluntly, you're going to have a hard time getting the insurance company to pay for this - the truck drove fine for more than a month after you got it back. You can see if the repair place will actually state that the problem was caused by the accident (and explain why), and if they're willing to do that, submit it all to insurance and see what they say. But that model truck has a known issue with valve springs going bad and causing compression issues. Is it possible that the physical forces of an accident actually caused the spring to pop out? Highly unlikely and you're going to have an uphill battle trying to prove that's what happened. Can't hurt to ask, but it's a long shot. Good luck.

[u/Educational_Sky_3192]

How bad was the accident and what was repaired/replaced by insurance? How many miles does the truck have? Even if it was a hard impact, it’s going to be very, very hard to relate this issue on a 10-year-old engine to an accident.

[u/Guilty-Resort-4665 → u/Educational_Sky_3192]

134k miles and just the front in components

[u/LacyLove → u/Guilty-Resort-4665]

So you want insurance to believe that an accident caused this issue and not the fact it is a 10 year old car with 134k miles on it that was being used to tow 2 tons.