Primer bulb won’t fill

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smurfer69

smurfer69

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Weston super mare
Hi guys, I’ve tried everything to get bulbs to fill got 990 and 1107 , fuel lines are correct grommet is new a 3 way, the 1107 is brand new with spiral diaphragm 990 is stock in that respect
But both won’t fill , so I’m thinking not the carbs , I don’t really know what else it can be, this been going on for 2 weeks , at the moment this just ain’t happening, any suggestions would be appreciated
 
Do you have a in tank filter. Sounds like carb is new. Just for giggles swap fuel lines. I use nothing but yellow tigon line,not sure if I spelled correctly. If you have a filter remove it . Try blowing through lines. Usually 3 to 5 pushes and l can see air bubbles in return line and I'll give 1 or 2 more. My primer bulbs never FILL , but I'm just concerned with getting some bubbles in return to make sure l have flow. It only takes a tiny Crack in lines to suck air. Fuel line is cheap and I would replace them and filter and go from there. Do you have a tank vent or just the cap vent, maybe try without cap which can be an issue sometimes. Let us know what you find
 
I will do that, get new line and new filter , and I think maybe fuel tank could possibly b an issue over time taking grommet in n out has caused damage to fuel tank but grommet is still very tight
 
Not thinking grommet is issue. All mine have light leaks around grommet. I'm looking more at why no fuel flow through lines. Is bulb pulling any fuel at all..... if not possible line issue. Keep it simple, one step at a time. Hook up line from tank to carb, no return and see if you get fuel from carb. If your only using 1 line, even before you run through grommet, just down through the cap hole, you can switch on carb to double check your on correct fitting....process of elimination....then go from there. Brand new parts....primer bulb can be bad too. Take your time and you will figure it out. Stay updated......
 
Mick Mars said:
Not thinking grommet is issue. All mine have light leaks around grommet. I'm looking more at why no fuel flow through lines. Is bulb pulling any fuel at all..... if not possible line issue. Keep it simple, one step at a time. Hook up line from tank to carb, no return and see if you get fuel from carb. If your only using 1 line, even before you run through grommet, just down through the cap hole, you can switch on carb to double check your on correct fitting....process of elimination....then go from there. Brand new parts....primer bulb can be bad too. Take your time and you will figure it out. Stay updated......
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To be honest no fuel at all , I’ve been doing this so long now , never come across this problem before, ok next couple I will strip down n start again bit by bit n try n figure out , its like the god dam krypton factor lol
 
smurfer69 said:
To be honest no fuel at all , I’ve been doing this so long now , never come across this problem before, ok next couple I will strip down n start again bit by bit n try n figure out , its like the god dam krypton factor lol
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Wtf is that doing now slow return on bulb fkn hot tub in my carb
 
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