Jump to content
  • GUESTS

    If you want access to members only forums on HSO, you will gain access only when you Sign-in or Sign-Up .

    This box will disappear once you are signed in as a member. ?

warm starting problems


hovermn

Recommended Posts

My '03 Polaris 550 fan starts cold after 2-3 pulls, every time. Never had a problem starting the engine cold. Starting warm, however has proven to be a major problem, and pain! If it's been sitting for 10 minutes and up to 2-3 hours (longest I've let it sit before starting warm) it just doesn't want to start up. It seems to flood out right away. It usually ends up taking 15-20 pulls to get it started again. When out on the lake, it's not only embarrassing, but really frustrating and a little stressful. After all, I just bought the sled and I worry that I bought a POS.

A couple of days ago, I starting pricing the cost to install electric start on the sled. $500 plus around $150-275 for installation, depending on the shop. YIKES! The last shop I called was Forest Lake MS. There, I talked to a woman in the service shop and told her what was happening. Right off the bat she mentioned that I should turn off the fuel every time I shut the engine down. She was saying that fuel will continue to flow into the carb and cylinder after shut down and create an instant flood condition which is inherent to Polaris.

I haven't tried this yet, but I'm curious if this is true? Could something else be happening here? Why wouldn't Polaris do something to solve this problem?

Any thoughts? I'm really frustrated. I bought a pannel mount fuel cut off valve if this is the case so I don't have to open the hood every time, but I'm hoping there's something else going on here.

Link to comment
Share on other sites

Not quite sure of your problem but the only way fuel can continue to flow into your carbs is if the fuel inlet valves (needle & seat) are bad.

Once the float bowls are full of fuel, and the float rises to the top, the fuel inlet valve closes and no more gas will enter your carbs.

Might want to check on that.

Otherwise, you aren't choking your sled again for a warm start are you?

If you do flood, give the sled full throttle and start pulling.

Link to comment
Share on other sites

Hanson has it right on.

Try holding the throttle wide open while pulling it over. As soon as it fires, release the throttle ASAP!

A jack stand would be your safest bet when doing this.

This test will help prove you have a flooding problem, as the sled should start sooner with throttle full open.

New needle and seats, should fix the problem

Link to comment
Share on other sites

It could be something as simple as floats being set too high and allowing gas to slightly boil or seep into the engine after shut down, or on the other end of the scale it could be a low compression problem. After testing the fuel shut off trick, the next thing I'd do is check the compression. That is easy enough to check with a compression gauge and a few pulls on the rope. I don't know the spec on your particular motor but 130lbs is enough for decent starting. ( more is better to a point) When my last Skidoo had about 14,000 miles it had dropped to about 115lbs and got pretty tough to start when warm. A set of rings and it was good to go.

For your sake lets hope its the floats....

Link to comment
Share on other sites

Good advice here.

I'd say check compression first. Honestly, not to scare you, but the IMO the 550 fans by Polaris have had issues, major issues. I've talked to owners of these new engines blow with 100 miles...rebuild and blow piston(s) again. Maybe a fluke, maybe not, but when a local mechanic told me the same thing.....

However, I had a sled that had the very same symptoms and it needed the carbs rebuilt, replace needles/seats of the float bowl and clean the jets.

Just be sure to warm up these engines before blasting off into the abyss.

Link to comment
Share on other sites

Thanks for the info guys! Sounds like there's a lot to digest and check over here. First thing's first, check compression. Something I was going to do before buying the sled, but completely forgot about when the time came. DOH! As far as the carbs are concerned, is there an easy way of checking this? As I've stated in other threads, I'm brand spanking new to snowmobiles and hardly know the first thing about these things.

Hanson, you mention choking a warm engine. If I felt that the engine was warm, say within 30 minutes to an hour, I would start pulling the rope without the choke. If after 2-3 pulls, I would flip the choke to half. Eventually, after juicing the throttle once or twice, pull rope, repete many times, it would grumble back to life. awk

Chuck, you comments about the engine shocks me a bit. I've heard nothing but good things about this engine from everyone I've talked to. Are the instances you're referring to isolated or pretty wide spread? I believe you, but you're the first one to speak negitively about the engine. I'll surely heed your advice about proper warm up, though! Good advice!

Link to comment
Share on other sites

If its warm and you dont get it started in a few pulls open the throttle all the way to get it firing. You'll need to stay on the throttle and play with it until sled clears itself. I'm not going to guess why you are flooding. Save yourself some aggrevation and take it to a reputable dealer. They sure arent busy now.......

Link to comment
Share on other sites

I'm not a hardcore Polaris guy, but a conversation with a disgusted owner and mechanic said he's seen a few of these machines with problems.. I'd say isolated since I don't talk Polaris much... Again, didn't mean to scare you, just stating a compression check is a start as it's very quick and easy before digging deeper.

There's no easy way to check the carb situation. Basically take carbs out of the sled, take the bottom bowl (pan) off the bottom of the carbs and work on the jets. Personally, if compression checked ok, I would just replace the float needle jet assembly. A sled that is 3-4 years old, and the previous owner who may have neglected to properly store the machine in the off season...damaged carbs can easily happen.

I guess some Polaris' carbs are sensitive to trailering also. The bouncing on the trailer damages the needles/float assembly, and gas floods into the carbs. Before trailering it may be wise to shut off the fuel valve, run the sled for a little while to run gas out of the carbs a bit. Kinda like the advice the dealer gave you.

Good luck!

Link to comment
Share on other sites

Just checked compression. 125 psi both cylinders. For reference, I checked the net and found this to be normal.

Chuck, I also checked the net for the troubles you talked about. Yup, found'em. However, from what I could find, it sounded like it was the earlier models that gave the most trouble, say 99-02. Didn't find anything on the '03. Maybe I just didn't uncover it.

Next on the list is probably putting the sled up on the block. I say this for a few pretty vaild reasons:

1. I bought the sled for ice fishing. So far, no snow means no sled. I didn't buy the sled to be a trailer queen.

2. Reading about the many many many problems Polaris has had with the 550 fan, it may not be a bad idea to sell the sled while it still runs, and it runs great!

3. I start a new job next week (OFF 3RD SHIFT AFTER 10 YEARS!!!) and will take a pretty hefty pay cut.

Both 1 and 3 put me on the fence with selling the sled about a week ago when I accepted the job. I think #2 just pushed me over. If I keep it, I could get thousands of trouble free miles out of it. However, it could blow during the next outting. With the pay cut, I'm SOL if that happens.

Wow, didn't expect this when I started this thread. frown.gif*Sigh*

Link to comment
Share on other sites

Guest
This topic is now closed to further replies.


  • Your Responses - Share & Have Fun :)

    • got that right Leech!!!!!! theres a group of guys from the cold spring area that goes out and hunts them..........i heard they had 32 a few weeks back!!!!!!!
    • I missed the northern lights but here is a sunrise in Ely about a week or so ago.  
    • This person needs to be thanked for their service! Saved a lot of small game and fawns around there! 👍
    • My app shows they probably are not visible south of Winnipeg tonight. 
    • Spent the day on Lake Havasu and ran the Colorado river up to Topock.                   Man there was some BIG money on the lake today!    
    • The NOAA forecast for the lights is pretty weak this far south and like @Mike89 mentioned, the clouds have drifted in.  77% covered now.   Took a drive anyway cuz why not.  Never know what you might see.  I saw 14 coyotes.
    • RV camping is a popular way of enjoying the great outdoors while still having the comfort and convenience of home. It's a lifestyle that many people are choosing, from full-time RVers to weekend warriors who use their RVs for occasional getaways. In this essay, we'll explore the pros and cons of RV camping lifestyle and how it can impact your life.   Pros of RV Camping Lifestyle Flexibility: One of the biggest advantages of RV camping is the flexibility it offers. You can go wherever you want, whenever you want. There's no need to worry about booking accommodation or sticking to a schedule. You can change your plans on the fly and explore new places without any restrictions.   Cost Savings: RV camping can be more cost-effective than other forms of travel or traditional home ownership. You don't have to pay for hotels or restaurants, and you can save on rent or mortgage payments. RVs can be a great way to travel without breaking the bank, especially if you're a full-time RVer.   Outdoor Adventure: RV camping is a great way to enjoy the great outdoors. You can explore national parks, forests, and other natural wonders. RVs allow you to camp in remote areas that you wouldn't be able to access with traditional vehicles or accommodations.   Social Connections: RV camping can be a great way to meet new people and make friends. You'll find communities of like-minded people in RV parks, and many RVers are eager to share their experiences and knowledge with others.   Cons of RV Camping Lifestyle   Maintenance: RVs require regular maintenance, which can be time-consuming and expensive. You'll need to perform routine tasks like checking the tires, changing the oil, and winterizing the RV to keep it in good condition.   Limited Space: While RVs can be quite spacious, they are still limited in terms of living space compared to a traditional home. This can be challenging for full-time RVers who are used to having more space.   Driving: Driving an RV can be intimidating, especially if you're new to it. RVs are larger than traditional vehicles, and they require more space to maneuver. This can be stressful for some people, especially in crowded areas or tight spaces.   Limited Amenities: RVs may not have all the amenities of a traditional home, such as a full-sized kitchen, washer and dryer, or bathtub. This can be a drawback for some people, especially those who are used to having these amenities at home.   How to Save Money Without Sacrificing Comfort of RV Camping   RV camping is a great way to experience the great outdoors while enjoying the comforts of home. However, the cost of an RV camping trip can quickly add up, and it can be challenging to stick to a budget. In this essay, we will explore tips on how to save money on an RV camping trip without sacrificing comfort.   Plan ahead: Planning ahead is essential when RV camping on a budget. Research campsite fees, fuel costs, and any other expenses associated with your trip. Make a budget and stick to it.   Choose budget-friendly campsites: There are plenty of budget-friendly campsites available that offer basic amenities, such as water and electricity hookups. National parks and state parks are great options for affordable camping. Some private campgrounds also offer lower rates than others, so do your research and find the best deals.   Cook your meals: One of the biggest expenses on an RV camping trip is eating out. Cooking your meals in your RV can save you a lot of money. Pack a cooler with food that can be easily cooked on a stove or grill. Consider meal planning ahead of time to make grocery shopping more efficient and cost-effective.   Use free amenities: Many campsites offer free amenities such as hiking trails, beaches, and playgrounds. Take advantage of these amenities and plan activities around them. Instead of paying for activities outside the campsite, use the free amenities offered.   Pack Efficiently: Space is limited in an RV, so pack efficiently. Make a list of everything you'll need and pack only what's necessary. When camping during winter, utilizing rechargeable hand warmers is advisable. These hand warmers come in various shapes and sizes, making them easy to carry around in a pocket or bag. Ocoopa provides excellent rechargeable hand warmers that also work as portable power banks, enabling you to charge other devices. These hand warmers come with various heat settings, allowing you to control the temperature to your preference.   Save on fuel: Fuel costs can be a significant expense on an RV camping trip. To save on fuel costs, plan your route ahead of time and choose the most fuel-efficient route. Keep your RV well-maintained, ensure tires are properly inflated, and avoid speeding, as these factors can impact fuel efficiency.   Reduce energy consumption: Energy costs can add up quickly when RV camping. Consider using LED lights, which are more energy-efficient than traditional bulbs. Use natural light during the day to avoid using lights. Also, unplug electronics when they are not in use to save on energy consumption. Rent instead of owning: If you only plan to go RV camping once or twice a year, consider renting an RV instead of owning one. Renting an RV can be a more affordable option than owning, as you only pay for the time you use the RV.
    • Speaking of birds. Here is a grouse that was out along the side of the driveway this afternoon. I am getting ready to go out and look for the northern nights. I missed them last night.
  • Topics

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and Privacy Policy. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.