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Old 01 November 2018, 07:47   #1
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engine stalling

opinions needed.

whats everyones opinion on my engine stalling? engine ran fine until i changed the fuel bulb for a brand new one but i think it's only coincidence.
fuel tanks cleaned out all filters changed, fuel line all good along with engine service with no electronic issues on the computer.
senario is engine primed till bulb solid as normal engine starts first pull and runs ok then as in the video the revs start to drop and it stalls, if i run it straight away in gear at say 2000 rpm it will run all day without a blip but soon as i let it tickover it stalls.
i've tried it on two tanks with seperate lines and its the same, if i prime the bulb soon as i hear the revs dying it picks up and runs as per the video.
i suspect it's a low pressure pump issue engine hours 80 over 3 years.
not been able to get it to a service agent yet he's too busy i contacted suzuki no reply.
any help advice appreciated.

edit LP pump is a throw away item




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Old 01 November 2018, 08:10   #2
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did you put the fuel bulb in the wrong way around - check the arrow on the bulb, it should point in the direction of flow. apologies if this is a daft suggestion
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Old 01 November 2018, 08:16   #3
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did you put the fuel bulb in the wrong way around - check the arrow on the bulb, it should point in the direction of flow. apologies if this is a daft suggestion
bulb correct direction even left in the vertical position & horizontal cheers
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Old 01 November 2018, 08:49   #4
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id refit the bulb & see what happens
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Old 01 November 2018, 09:38   #5
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id refit the bulb & see what happens
but it does it on a different line and bulb in fact i'd say worse and its shorter in length
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Old 01 November 2018, 09:40   #6
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i'd join you suspecting it's a fuel pump issue - I think there was a thread on fuel pump issues recently
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Old 01 November 2018, 10:44   #7
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I have a fuel pump pressure gauge if you want to pick it up from Mansfield or Farndon, just tees into the supply pipe to the carb before you spend on a new one.
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Old 01 November 2018, 11:56   #8
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If it's carburated I'd suspect carb needing cleaned. Idle jet or air balancer blocked.
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Old 01 November 2018, 12:22   #9
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No it's efi with ecu diagnostics.

I can't remember now... do the diagnostics report on fuel pressure? I would have thought so. If no-one else has posted yes/no I'll have a look around later to see if I can find out.
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Old 01 November 2018, 12:41   #10
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Another "silly" suggestion - but worth checking, and quick to check - check that all the pipes are free of cracks or holes. I had an issue with the engine on a RIB safety boat - found it was due to a cracked hose sucking in air - not fuel!

I know that you have tried it with separate lines, so maybe you only need to check the common lines (near the bulb??)
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