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Old 04-24-2010, 01:50 PM   #1
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Default Cant get fuel to feed into carburetor

I cant get the fuel to feed into the carburetor when bump starting. I put my finger over the pipe and it still wont feed.

Is the problem in the tank or lines or could it be in the engine as well.
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Old 04-24-2010, 01:52 PM   #2
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Take the line loose from the pipe and blow thru it til fuel reaches the carb
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Old 04-24-2010, 01:54 PM   #3
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There has to be something else wrong to have to do that all the time.
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Old 04-24-2010, 01:57 PM   #4
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did it start that way
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Old 04-24-2010, 01:59 PM   #5
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If I can get the fuel to the engine it starts fine.
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Old 04-24-2010, 02:01 PM   #6
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replace the lines, replace the gaskets, make sure the head is on tight, make sure the carb is sealed and no air is getting in.
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Old 04-24-2010, 02:03 PM   #7
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That was my next step. I am going to check for air leaks on everything.
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Old 04-24-2010, 02:04 PM   #8
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Most common is fuel cap seal, next is fuel lines. You may have a plugged tank stone, but you'd have lean issues as well...

I always pull off the pipe hose and blow through to prime anyway. Excessive spinning over cold will wear the engine a little faster.
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Old 04-24-2010, 02:31 PM   #9
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My friends klunk got jammed up in the tank and kinked the line. took us like 2 min to notice it. ahahah
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Old 04-24-2010, 02:51 PM   #10
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I had the same problem when I got my new V spec. No matter what I did or checked it would not prime. I sent it out and after the case was flux tested it turned out that it was cracked! Yup right out of the box. Cracked case. I had to buy a new case. I hope your problem is not as severe. I would think the first thing you should check is your front bearing. That's usually where severe air leaks come from
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Old 04-24-2010, 08:14 PM   #11
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front bearing it was.
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Old 04-24-2010, 08:32 PM   #12
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Quote:
Originally Posted by wrayth View Post
front bearing it was.
which engine you running ?
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Old 04-25-2010, 02:57 AM   #13
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Quote:
Originally Posted by wrayth View Post
I cant get the fuel to feed into the carburetor when bump starting. I put my finger over the pipe and it still wont feed.

Is the problem in the tank or lines or could it be in the engine as well.


A little while ago a friend had the same problem with a brand new rtr.. Turned out the nipple on the tuned pipe where the pressure hose conects was blocked... Worth a look



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Old 04-25-2010, 04:41 AM   #14
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Ws7 II world I got the front bearing out and there is a small tit by the carb inlet on the flat section where the bearing seats. I imagine that this could be causing the problem. (factory defect) can I dremel this off?
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Last edited by wrayth; 04-25-2010 at 05:34 AM.
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Old 04-25-2010, 06:32 AM   #15
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OK.. im confused


I cant see anything odd in that pic .. Or am i going blind?
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