See full version: ATV Wont Start: Common Problems And How To Fix
If your engine isn’t getting enough compression, it won’t be able to pull fuel into the cylinder and stay running. The inside of your engine has some moving parts that need to be sealed up tight in order to work properly. [links]
The most common reasons you’re not getting enough compression is a worn out or leaking head gasket or a blown piston ring. Sometimes, if dirt has been getting into the engine through the air intake, you could have scarring on the inside of the cylinder walls. I hope that’s not your case, but it will cause a loss of compression.
Make sure the air filter is cleaned out, and there are no obstructions blocking the air box intake. You may need to replace the air filter all together, it’s a good idea to do that once in a while anyways. But if the filter isn’t that old, you might get away with just cleaning it out real good. [links]
For a more in depth look on how to clean your air filter, check out my How To Clean The Air Filter On An ATV article. In that article I go through step by step on how to clean your air filter to make sure your engine is getting the right air flow it needs to stay running. [links]
If you’re still not getting any spark, you have a bigger problem. If it’s not you’re only problem, it’s still one that needs to be fixed before you can get the quad running. Check out this How To Check For Spark On An ATV, Reasons For No Spark article to get more in depth steps on what to check within your electrical system for why you’re not getting spark. I also explain what you’ll need to do to fix the problem. more
There could be a number of reasons the engine isn’t getting enough fuel to start and stay running. The most common reasons have to do with the fuel pump or the carburetor. If you have a fuel injected motor, you may just need to clean the injectors to get it running smoothly again. more
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Heres my story. Kinda long. I guess I was a late bloomer when it comes to quads. I had never ridden a quad in my life. Rode Dirt Bikes as a kid growing up. Back in Oct of '06 I found a Mustang on craigslist. Took it for a test drive one morning before work. Fast car. 351 Cleveland. I had planned on meeting the guy again after work. For some strange reason thats still to this day beyond me, I stopped in Hillsboro MotoSports on the way home from work. I had 6 Grand on me. There was a left over '05 sitting by the front door. It was on sale for $4999. It was $5499 OTD. I didnt even look at anything else. I knew nothing about quads accept I thought it really looked coool and I had the money in my pocket to buy it. I was sitting on it when the salesman walked up and asked. "Can I help you?" Without hestitation I pulled 60 Ben Franklins outta my front pocket and said "I want this Quad. Load it up in my truck." It was just about dark by the time I drove away from the shop. BTW, I didnt bother to ask my ol lady if I could buy it. LOL. Anyway, I took it by the house and showed her. She was kinda stunned but not mad. We drove over to a friend of mines house and unloaded it. I took it to the field across the street from his house. HOLY CHIT. I was surprised by the power. I had it for about 2 weeks and took it to Sand Lake. I was there a few hours and rolled it on a banked turn at the top of the bowl right before you get to the one-ways. When it rolled, I flew off and landed on my belly. The quad came bouncing and landed on my back. For a month I couldnt even walk. I was scared of it. I considered trading it for a 250EX. Went back to the shop. The salesman said. "Dude. You dont want a 250EX. Trust me. Just get used to it" I still wasnt convinced. I put it on craigslist for $4000. Calls were coming in. I had a guy that wanted to come look at it that evening. I decided to take it for one last ride at Browns Camp before I sold it. I was still afraid of it. After about 5 minutes I started feeling comfortable on it again. I decided right then, I loved my Honda 450 and would learn how to ride it instead of selling it. That was late Nov of '06. Work was slow for a Painter in Oregon. My new job everyday? Going to Browns Camp and ridding my Quad. I bought my Girl Friend an '02 Blaster. I rode my 450 for 4-6 hours almost every single day for 3 months. And yes, I know my way around Browns Camp pretty well. LOL. In March I bought her an '06 TRX250EX (Thank God I didnt trade my 450 for one of those) LOL Since then, I have become totally addicted to quads. I love them. Couldnt imagine not owning at least one quad. Luckily I have two. My "07 was $6500 OTD in July of '07. Bought it for my Girlfriend. Traded in her 250 EX. A month later we broke up. So, I wound up with two Honda 450's.
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