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Old 25 April 2018, 07:19   #1
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Check your primer bulbs

2 yr old primer bulb kaput, genuine Suzuki part.
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Old 25 April 2018, 07:30   #2
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Being Yorks, you could superglue that back together....
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Old 25 April 2018, 07:30   #3
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I (and many other) blame the ever-increasing ethanol content of petrol.

Quicksilver brand fuel hoses on my aux fuel tank failed - the inside of the hose went brittle and cracked causing lots of small bits of plastic type material to work down the fuel line and block the ball valve in the quick release coupler.

I'm also fairly sure that some of the main brand fuel filter many of us use have internal rubber O rings that aren't compatible with ethanol in petrol either - I'm currently testing a second filter to verify this. The failure on these occurs when the rubber O ring expands and becomes more like neoprene in nature then disintegrates and clogs the filter. No external leak and nothing visible until the engine stops due to fuel starvation.

I plan to check everything rubber based on the fuel system thoroughly and regularly from now on
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Old 25 April 2018, 07:32   #4
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I'd never use that QS/Merc/Mariner stuff with the plastic liner - horrible crackly crumbly cr@p. Not sure it's ethanol or just not up to the job - replaced mine with regular marine standard fuel hose.
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Old 25 April 2018, 07:37   #5
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It isn't the rubber that's perished, I've put the knife through the bulb to open it up. It's the little one way valve that's fallen apart in the bottom that's the problem.
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Old 25 April 2018, 07:38   #6
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My Suzuki primer as supplied with my new 20hp failed after just a few outings.... mine was the valve failing... it was never brilliant from new TBH.

To offer a flipside to Max's view I replaced it with a Quicksilver primer and hose... of which I've had many inc over 15yrs old with no problems. I do check the bore now and again though plus carry a spare plain rubber hose/primer.
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Old 25 April 2018, 07:45   #7
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Quote:
Originally Posted by jwalker View Post
Being Yorks, you could superglue that back together....


I hadn't thought about superglue, but I reckon this should be good for a couple o' seasons
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Old 25 April 2018, 07:55   #8
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Quote:
Originally Posted by Pikey Dave View Post
I hadn't thought about superglue, but I reckon this should be good for a couple o' seasons
Attachment 124402
Hehe... That's the way to do it!
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Old 25 April 2018, 08:10   #9
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A good reminder, I changed mine yesterday as it looked a bit perished and felt a bit brittle.
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Old 25 April 2018, 08:24   #10
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Quote:
Originally Posted by Pikey Dave View Post
It isn't the rubber that's perished, I've put the knife through the bulb to open it up. It's the little one way valve that's fallen apart in the bottom that's the problem.
Fair one, I didn't open / study your pics, but I can see that clearly now I have
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