t660 fuel odor

This is a discussion on t660 fuel odor within the 4 Strokes forums, part of the Arctic Cat Snowmobiles category; I have a 05 t660 with a strong fuel odor. I hav e checked everything I can think of including pressure testing and smoking the ...


4 Strokes Z1 Turbo / Z1 / T660

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Old 01-24-2011, 11:41 AM   #1
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t660 fuel odor

I have a 05 t660 with a strong fuel odor. I hav e checked everything I can think of including pressure testing and smoking the fuel tank. there is a little fuel in the vapor line but not dripping out. any help?
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Old 01-24-2011, 12:30 PM   #2
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you notice this more after putting gas in or????Check the routing of the gas tank overflow,,,
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Old 01-25-2011, 11:27 AM   #3
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fuel odor t660

The vent line was pinched at front of tank. I rerouted the line with a with the dip in the hose next to the reverse lever and still ending in front of your left foot although the end of the hose is a little higher as the remaining hose is alittle shorter due to the reroute. I have since added 6 inches of hose to get it right on the belly pan. I have changed the fuel cap, checket the seal under the fuel pump - sending assembly.
Checked for leaks and stains and still get a strong smell of gas on hard acceleration or on rough trails. I have three other t660s that don't do this.
Thanks..
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Old 01-25-2011, 11:36 AM   #4
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i get a fresh gas smell if i fill the tank really full, I just assumed that if I filled it right up to the neck and bounce around that some gas will make it out of the vent/overflow.
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Old 01-25-2011, 06:11 PM   #5
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 Quote: Originally Posted by icecube44 View Post
i get a fresh gas smell if i fill the tank really full, I just assumed that if I filled it right up to the neck and bounce around that some gas will make it out of the vent/overflow.
yes,to full equals smell,,,,,,,
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previous sleds,
2004 T-660 turbo
2003 4-stroke touring
2002 4-stroke touring
2001 Panther 550
2000 Z370
1997 Jag 440
1996 580 EFI ext
1995 Cougar Deluxe
1995 Z-440
1994 EXT EFI
1993 Jag Deluxe
1993 550 ext
1993 440 Prowler
1992 550 ext special
1991 440 Prowler special
1990 440 Prowler prototype #308
1989 El'tigre 6000
1988 El'tigre 5000
1985 Cougar 500
1981 Polaris Gemini
1980 Panther deluxe 440
1978 Kawasaki 340 liquid
1975 Yamaha 433 gpx
1972 Skidoo 340 Olympic
1971 Polaris 292 Charger
1969 Boa-Ski Cobra II
1968 Boa-Ski Cobra

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Old 01-25-2011, 07:45 PM   #6
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found mine

Had a look at the tank in the parts manual and found a threaded plug at the front of the tank about 4" in center, right beside the fuel filter.

Not sure why this plug/drain is located where it is, but there it was when i had a look under the hood. And sure enough there was avery slow leak of fuel from around the threads. The manual shows the plug as being wrapped in Teflon tape when installed....so it looks like it just needs to be retaped with Gas-teflon tape and put back in.

fmci3551 i hope ya find yours.
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