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4 Posts
Ok, after reading a lot of posts, I’m convinced that I am having problems with my fuel pump and/or pressure regulator. Let’s see…
ATV: Polaris sportsman 500 EFI touring 2007 with 2.200 km (purchased new in 2009)
Symptoms: the atv always starts well, ride normally until warm and still ok until I turn the key off.
After 5 or 10 minutes stopped, when I turn the key on the engine starts always normally BUT when I open throttle the engine salts/ bogs as if it as no gas getting to the injector. Usually with a full tank does not happen, has happened always with half a tank or less than half tank.
I start with the simple things:
1) Change the fuel filter (efi models)
2) Change the spark plug (the original was good anyway)
3) The vent houses from tank are clear
4) The spark plugs wires are ok
5) Air filter and tubes are clear
And after that, and few search later, I think vapor locking is my problem!!! And the next job was isolate all bottom of fuel tank and the fuel hoses that goes from fuel filter to injector.
Last weekend I went to ride and the same thing happens, with less than ½ tank and after a break it starts to salt and bog. I stopped again, wait 15 minutes and re-start and everything ok as nothing happens before When the problem appears, if I look inside the fuel tank when motor is on, I see some bubbles and the gas seems to be hot.
So, I assume that I have some problem in the fuel pump or regulator that when they not have gasoline around to cool, they give me bad headaches
onder:
What do you guys think??
Also the fuel pumps for this model, I read about bosh, airtex ..etc….which is the best for this model?
Thanks in advanced.
ATV: Polaris sportsman 500 EFI touring 2007 with 2.200 km (purchased new in 2009)
Symptoms: the atv always starts well, ride normally until warm and still ok until I turn the key off.
After 5 or 10 minutes stopped, when I turn the key on the engine starts always normally BUT when I open throttle the engine salts/ bogs as if it as no gas getting to the injector. Usually with a full tank does not happen, has happened always with half a tank or less than half tank.
I start with the simple things:
1) Change the fuel filter (efi models)
2) Change the spark plug (the original was good anyway)
3) The vent houses from tank are clear
4) The spark plugs wires are ok
5) Air filter and tubes are clear
And after that, and few search later, I think vapor locking is my problem!!! And the next job was isolate all bottom of fuel tank and the fuel hoses that goes from fuel filter to injector.
Last weekend I went to ride and the same thing happens, with less than ½ tank and after a break it starts to salt and bog. I stopped again, wait 15 minutes and re-start and everything ok as nothing happens before When the problem appears, if I look inside the fuel tank when motor is on, I see some bubbles and the gas seems to be hot.
So, I assume that I have some problem in the fuel pump or regulator that when they not have gasoline around to cool, they give me bad headaches
What do you guys think??
Also the fuel pumps for this model, I read about bosh, airtex ..etc….which is the best for this model?
Thanks in advanced.