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Old 11-28-2012, 11:05 AM   #1 (permalink)
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1985 Indy 400 no fuel

My 1985 Indy 400 won't start unless I remove spark plugs and and manually put fuel on piston there is no fuel in the lines or in the inline fuel filter the fuel filter in gas tank is new I took apart the fuel pump and held the diaphragms up to light no holes it has 1/2 tank new gas
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Old 11-28-2012, 12:08 PM   #2 (permalink)
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Pull a fuel line from the carbs and put the end into a container. Pull the rope a couple of times to see if you are getting fuel. If so, it's likely that the inlet needle/seat is stuck, which will require cleaning the carbs. If you don't get gas, blow into the gas line and listen for bubbles in the tank. No bubbles means something is restricting flow.

Is there a gas shutoff that is off?

Sometimes the inlet hose in the tank cracks or rots, which causes an air leak. To test if that's the case, put more gas in. If the problem goes away, the gas level is now higher than the bad hose, so gas will go into the fuel pump. The fix for that will be a new hose.
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Old 11-28-2012, 07:51 PM   #3 (permalink)
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Yes it has a gas shut off it is on I replaced all fuel lines today the spark plugs are wet with fuel I did replace the recoil spring this summer the recoil spins in clock wise direction when I pull
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Old 11-28-2012, 10:33 PM   #4 (permalink)
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I just looked in the fuel tank and there must of been some old fuel in the tank her for I put new fuel in it it looks cloudy I the tank dose anyone have direci
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Old 11-28-2012, 10:34 PM   #5 (permalink)
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Directions to remove the fuel tank
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Old 11-28-2012, 11:46 PM   #6 (permalink)
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First remove seat (2- 1/4" bolts up through tunnel into seat compartment) then remove tank cover (snaps and filler grommet). There should be hold down fixture at rear of tank (7/16" nuts) and a spring across a boss on front of tank.
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Old 11-30-2012, 10:35 AM   #7 (permalink)
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Tank you. For the help the tank also had a lot of little pecies of of fuel hose in side of it the fuel rank the carbs are off and soaking in carb cleaner
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Old 12-01-2012, 08:07 AM   #8 (permalink)
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http://www.vintagesnow.com/Polaris_files/85%20body.pdf
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Old 12-01-2012, 05:34 PM   #9 (permalink)
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today put the carbs back on and it starts then dies 10-15 seconds later if i hit the accelerator after stating hold it for a few secnonds it stays running after i let go of accelerator
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Old 12-01-2012, 07:20 PM   #10 (permalink)
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Quote:
Originally Posted by cfish View Post
today put the carbs back on and it starts then dies 10-15 seconds later if i hit the accelerator after stating hold it for a few secnonds it stays running after i let go of accelerator
Without punctuation, it's hard to know what this post is saying... I'm guessing here - It will start but will die in 10 seconds or so. If, once you start it, you press the throttle a little bit and let it go, it will then keep running.

True?

If so, it sounds like the idle circuit could be partially plugged still in the carbs or the choke plungers are not functioning properly.
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