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Yeah. My 2014 would backfire like it was going to lift itself off the ground. I got all the reflashes as they became available and absolutely no backfires or kickbacks after that. The engine does crank longer before starting but that's a small sacrifice. My 2020 Viper cranks for an extended...

Yes. Just like that.

I would try Barn of Parts for a lot of that stuff. It would be a lot cheaper to go that way if he has it in stock.

Mine did exactly the same thing. Pry the round cover off the back of it and check for moisture in there. Mine froze the the large gear and then it forces the worm shaft out the bottom because it can't rotate the large gear. Your only recourse is to replace the whole unit. Some people have done...

I've been using Mobil 1 for the last few years and also Castrol Edge ever since 2014 with no issues on either one.

That sounds as though it's working as it should.

Sure. That's a good idea as well. You didn't mention anything about your radiator cooling fan. Is it coming on when is should?

I wouldn't be surprised if the channel in your heat exchanger is now restricted by weld/slag from welding. Take the inlet and outlet hoses off the exchanger and blow a high volume of air in the inlet. There should be absolutely no restriction to the air flow. Any restriction would likely cause...

Nice work. These gremlins can sometimes be next to impossible to track down. Codes don't always tell the story either. Perseverance and a little luck can go a long way toward finally coming across something that just doesn't seem right.

I don't have a new Viper but I have a 2020 that I bought new. It came with the latest flash and it still can be a bit unpredictable at times when starting. It seems to start well cold but can be stubborn when at operating temperature. I find that when it fails to start warm, instead of just...

Because this is a 3 cyl. engine, there's are long duration between cylinder cycles and will give you a pulsating reading on the vacuum gauge. The way to prevent this on this engine is to put a restrictor in the hose. I just pinch a piece of copper tubing until it's almost pinched closed and then...

It's really not a big job to check the valve clearances on these. You only need to remove the valve cover and take measurements with feeler gauges. The real work comes if you find out that they are out of range.

Sorry about the bad link. Here's one that works. Rod. https://www.arcticcatyamahanationalclassaction.ca/

Maybe this has been already discussed but I just came across this and put in a claim on my starter and expenses. We'll see what comes of it...

My 2020 Viper does exactly the same thing. I find that when it does that it will start better on the second attempt if I turn the key to the off position and then start over. It will usually start at that point.

I've got a 2020 LTX with 550 miles on it and it does the same thing. I believe it's the drive clutch. My 2006 Nytro and 2014 Viper RTX did exactly the same thing. Lot's of people on here have tried to reduce or eliminate that clatter with shims and other attempts at remedies. It seems that if...

Has it had the latest computer update? Sounds like it's still on the old program.

I would contact Barn of Parts. Chances are pretty good that he'll have a good used one. Good guy to deal with as well.

I staked mine in with a centre punch on my 2014 Viper.

Exactly. These bolts are not tightened very tight. It's the thread locker that Yamaha uses that puts up a high resistance. Heating makes a huge difference.