Author Topic: Lister LT1 1975  (Read 147 times)

busters

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Lister LT1 1975
« on: September 05, 2022, 06:00:46 PM »
Could the shim thickness of the fuel pump affect the compression of the LT engine?
The fuel pump is a Bryce FAOAN.
Having bought the non working engine as a project for my grandson we found the fuel pump was not working. Stripping and cleaning it worked OK.
The engine started and ran for around 1 minute, lots of black smoke, and then stopped. Trying to restart was impossible due to very high compression and kickback.
It is possible we mislaid one layer of shim when refitting pump, would this affect the engine compression or just the fuel supply timing?
If this is not the case what could the other possibilities be ? When decompressed the engine turns easily with no knocking.
Any help appreciated, thanks

Diesel Engineering

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Re: Lister LT1 1975
« Reply #1 on: September 06, 2022, 03:11:33 AM »
The thickness of the fuel pump shims will have no effect whatsoever on the compression. But as you say it will affect the timing. This could cause smoke and kickback when trying to start. Would suggest you check the spill timing  of the pump.

ajaffa1

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Re: Lister LT1 1975
« Reply #2 on: September 06, 2022, 08:51:51 AM »
Hi Busters, I think this is an over fueling problem , judging by the black smoke. I think I would be pulling the fuel injector out and doing a spray pattern/pop pressure test on it.
Some Lister engines have a deliberate over fueling option for cold starting, this should be disengaged immediately the engine is running. I don`t know if this applies to an LT1. Please see the attached photo of my SR1. As the lever is, it is in run mode, you push the lever down to cut off fuel to stop the engine. To cold start the engine pull the lever up until it is in the vertical position.
Hope this helps.

Bob

ajaffa1

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Re: Lister LT1 1975
« Reply #3 on: September 06, 2022, 09:07:53 AM »
Sorry, the picture shows the lever in fuel off position. lift it a little and it is in governor/throttle control position, vertical is over fueling for cold start. Apologies, I haven`t had much time to play with these toys recently.

Bob

cobbadog

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Re: Lister LT1 1975
« Reply #4 on: September 06, 2022, 11:37:47 AM »
Same idea for the cold start position on my SR2
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ajaffa1

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Re: Lister LT1 1975
« Reply #5 on: September 06, 2022, 12:44:39 PM »
Hi Cobbadog, saw your post about painting stuff for the show. I`m guessing that was the rusty iron in Macksville. I hope you all had a good time despite the wet weather and mud. I wish I could have been there but a bit of a drive from Tasmania. Maybe next year.

Bob

busters

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Re: Lister LT1 1975
« Reply #6 on: September 06, 2022, 05:14:45 PM »
Thanks for all your advice, will give it a go.

cobbadog

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Re: Lister LT1 1975
« Reply #7 on: September 07, 2022, 05:28:38 AM »
Hi bob, yes the RIR is our Club rally and although it would have been dryer standing under a waterfall on Saturday we got to have some playtime on Sunday. David the tractor had to tow a few toys out of compounds and our caravan as well and he looked like he was the target of a shit throwing contest by the time he went back onto Lorry. Having said that it was a great time catching up with mates we haven't seen in a long time and made some new contacts as well.
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ajaffa1

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Re: Lister LT1 1975
« Reply #8 on: September 07, 2022, 09:15:04 AM »
Hi Cobbadog, a tractor without mud is  an ornament! Glad you had a good time, I`ll try to get up there in a year or two.

Bob

cobbadog

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Re: Lister LT1 1975
« Reply #9 on: September 07, 2022, 11:51:23 AM »
Organising our trip to the Clarendon Classic tomorrow
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