So, just did a fresh topend rebuild on my 670 and it wouldnt start for anything. Cleaned carbs, checked for spark, etc. Picked up a NEW $90 fuel pump from skidoo around noon today, got back, threw it in and fired up 2nd pull. Rode that bad boy for a solid hour or two and doin about 30 on a trail with 6 other riders, its straight up shut-down. Cruisin about 5-6K rpm's and it felt like someone yank the teather off. WOULDNT resart for anything, got it to kick a few times with the primer but thats it. Towed 'er back to the house and began inspection. Checked for spark again, pulled airbox, carbs, fuel filter in tank and the new fuel pump. Opened up the fuel pump ands its pritty straight forward, no moving parts, just some check valves and fuel passages.
Put it all back togther and let a 500watt light stare at the carbs for a good hour (to elliminate ice problems, only 30 degrees out). Primed it 5 times, cranked 'er over and kicked but thats all she wrote, had 7 guys standing around taking turns pullin on her but nothin happened. Can see lots of air in the fuel lines going to the carbs, tried blowing threw the fuel tank to push it threw but no luck. Pulled it over while someone else checked to see if the fuel was moving and nothin... Made sure the crankcase pressure line was seated properly and connected to the fuel pump.
ALL i can guess is SOMEHOW MABEY the new fuel pump isnt working and straight crapped out. Its hard to grasp though, theres no moving parts inside of it and its pretty simple, i just dont get it. If i get a replacement pump, throw it on and she starts, im'a be pist... What you guys think? Ive tried damn near everything... Its got good spark and sometimes kicks when we prime it, SAME EXACT thing happened with the initial fresh topend start, nothin, nothin, nothin, threw on a new fuel pump and fired right up.
Im stumped..................
Put it all back togther and let a 500watt light stare at the carbs for a good hour (to elliminate ice problems, only 30 degrees out). Primed it 5 times, cranked 'er over and kicked but thats all she wrote, had 7 guys standing around taking turns pullin on her but nothin happened. Can see lots of air in the fuel lines going to the carbs, tried blowing threw the fuel tank to push it threw but no luck. Pulled it over while someone else checked to see if the fuel was moving and nothin... Made sure the crankcase pressure line was seated properly and connected to the fuel pump.
ALL i can guess is SOMEHOW MABEY the new fuel pump isnt working and straight crapped out. Its hard to grasp though, theres no moving parts inside of it and its pretty simple, i just dont get it. If i get a replacement pump, throw it on and she starts, im'a be pist... What you guys think? Ive tried damn near everything... Its got good spark and sometimes kicks when we prime it, SAME EXACT thing happened with the initial fresh topend start, nothin, nothin, nothin, threw on a new fuel pump and fired right up.
Im stumped..................