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steve.sharratt

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  • Gender
    Male
  • Location
    UK
  • Occupation
    Consultant
  • Boat Name
    Nautilus

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  1. I think that could be the problem. I will leave the valve alone from now on.
  2. That’s interesting. I do tend to turn off the fuel at shutdown - so I don’t forget. I’ll give it a try!
  3. I have now pressure tested the line from the day-tank using a large syringe. I believe there was a good amount of pressure but I got no obvious indication of any leak and strong resistance from the syringe. The banjos on each end seemed clean so I didn’t touch them. I replaced the fuel line between the filters and the fuel pump (it looked dodgy) and then bled the pump at the closing plug and almost immediately got a very strong flow of fuel (not bad as the pump did drain off a bit of fuel when I replaced the fuel line). She then started on the first attempt. I am confident it not a starvation issue as she was run quite hard on the Thames for several hours with no problems and any bleeding shows good fuel flow. I will give the engine a good cleaning tomorrow and let it sit for a few days and then try to start again. I will keep you posted.
  4. Interesting as I was just looking at that and I noticed that the flex fuel line coming from the filter to the banjo was very wet (it is U shaped so could be leaking from either end). I have dried it off and will check later but I have some new fuel line so will probably replace it regardless. I have a gravity-fed day tank (no electric pump). I am paranoid about opening the fuel valve prior to starting and have checked that. I did wonder whether as the day tank empties the pressure becomes insufficient. I don’t think that is the problem though as when I bleed the system it has no problems with fuel flow.
  5. I haven’t tried the bleed screw as I followed the manual for Priming the System. I did see that it mentioned bleeding from (what they call) the closing plug in the trouble shooting section. I will have a look tomorrow. I do have a large syringe which could work for pressurising the system. I will give it a try and let you know. Cheers Steve I don’t have the original filters but it will be worth checking my filter system to make sure all of the bungs and plugs are properly sealed. Haven’t noticed any leaking from there but then I wasn’t looking! Cheers
  6. Hi all, This is a continuation of my previous thread. I thought I would start afresh as the last issue was technically solved. I went for a 10-day run along the Wey to Guildford and she started fine every time and ran well except the occasional cough. This included a few 36 hour stops. Got home on Saturday afternoon after good run up the Thames and tried to start her on Tuesday - she wasn’t having it. I have learned to listen for a ‘distinct sound she makes when trying to fire and I just wasn’t hearing it. This is the same as the previous thread. Long story short - I disconnected the fuel lines at the injector and hand cranked but didn’t get the eventual squirt of fuel I did last time. I then (following the JP manual guide for priming) removed each delivery valve holder on the fuel injection pump. No 1 hesitated and then blew a swag of bubbles before flowing freely. Nos 2 and 3 were less interesting - just slowing began to flow with fuel. Reconnected and after a few coughs and splutters she fired up. I did get a large puff of black smoke out of No3 valve cover but she quickly settled. That’s the story. My question/enquiry is… is it likely an air leak and is there a clever way of tracking to the source? Also, would the occasional splutter I get be related? I have a short video but only in MOV and MP4 and neither are accepted.
  7. It is the same. So close that the serial numbers are only about 300 apart! They are siblings!!
  8. Not sure why I said 1950. 1944 is my estimate based on the attached. Engine number is 60/20579. I think it is likely that it was originally a generator. Prior to installation it was pulled apart for rebuild and the ring/bores etc were apparently in a new condition suggesting that she either saw little to no use or had been completely rebuilt. I know that the Gardner in my Dutch barge came from a hospital during the Thatcher era clean out. Again, never used. I gave her a short run this morning as I had to turn her around. Tested the feeler pins and they all gave a good jab so it looks like all is good. She runs beautifully with little to no smoke but I do have one little niggle - occasionally she will (seem to) miss. I get a single cough and then it is fine again. No specific action seems to trigger it and it is completely random. Normal? If not, I think I will start a new thread and post a video of it. Thanks everyone for all of your help. This site is gold!
  9. Going to test shortly. Definitely get the creak and I do have grease caps on the rockers. It’s interesting that some aspects of my engine suggest an earlier model but other features, such as you mention, appeared later. My research suggest that she was built in 1950.
  10. That’s interesting. I will test it tomorrow!
  11. I have two manuals but neither show the configuration I have. The rockers are in a separate compartment to the injectors and are well oiled. I do remove the covers and pour oil over the rockers and valves pre-start so no issues there ( I think the picture makes it look dryer than it is). The section which covers the injectors and pin has no (visible) moving parts. Looking at the picture I have realised that the top fuel line that heads to top-right of picture is an overflow line. The fuel-in line is the one with the large nut. Is it possible the pin controls how much fuel is released?
  12. Photos attached. They show the decompression levels and the ‘bowl’ The bowl is over the injectors so in a separate chamber to the valves.
  13. FIXED! I disconnected the fuel lines at the injectors and hand spun the flywheel. Each of the three blew air bubbles so kept cranking until clean fuel showed. Fired up straight away took a few minutes to find her balance and now she is purring like a kitten. It should have been an obvious 1st choice for me as I have been slowly upgrading and rerouting fuel lines over winter. I suspect the disconnects allowed fuel to drain back down the lines and introduced an air lock. Thanks for the good advice. While I’m here… My decompression valves are on the side of the block, not on top as I often see online. On top I have a small inverted bowl with a pin through the centre (accessed through a hole in each valve cover). Should these pins be set in any particular position?
  14. My wife did say there were puffs of black smoke (normally runs very clean). No white smoke though. I do have a day tank and I did recently drain off some fuel but you are quite right - I will drain off again to be sure.
  15. Hi, I could not get my JP3 to start yesterday. Fired her up a few weeks ago and she resisted for a while but then all was ok. She is catching but not firing. I am opening the throttle wide to start and was wondering whether after ‘many’ starting attempts where all the unburnt fuel is going? If flooding possible? I am about to give it another try (after batteries are recharged) but thought I would ask this question now just in case I am missing something obvious. Note: I did disconnect the fuel lines at the injector and there seems to be fuel there but I haven’t turned the engine over to pump fuel through. Cheers Steve
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