 | Home > Technical > Poor running 1995 110 3.5 V8 after hot start - sometimes...? |
 
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| BaronDefenders Member Since: 28 Jun 2019 Location: London/Cotswolds Posts: 896   
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Do you have phenolic spacers fitted between the carbs and the inlet manifold? If not, fuel evaporation could be a consideration.
Carbs are sensitive to temperature and will fuel differently when the engine is at operating temperature versus at cold. It’s possible that one or both of the carbs are over-fuelling the engine when at operating temp. I would see if you can find someone in your area that is experienced in tuning cards and have them go over everything. You might find you are in need of carb rebuilds. Charlie 1949 Series 1 80 (SOLD) 2002 Td5 90 (SOLD) 2008 Freelander 2 (SOLD) 1958 Series 2 88 Pastel Green (2019 LR Legends Best Restored) 1983 V8 110 Limestone (Previously owned by Tom Sheppard MBE) 2004 Td5 90 Santorini Black (Td5INSIDE Powered & Rebuilt by CSK) 2012 Puma 110 Zermatt Silver (Overlanding Build) Instagram: @BaronDefenders |
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30th Aug 2022 10:04pm |
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| The Zee Member Since: 26 May 2019 Location: Salisbury Posts: 289 
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Was thinking the same, heat soak related fuel locking, the fuel vapourises in the lines/conections and then there are problems with running or starting.
Had a problem with a VW Polo that did this on hot days/long journeys, failed to re-start or ran really rough for a while, moving the fuel line and adding some insulation helped. Zaid-M www.DefencePhotos.com 2014 Defender 110 Utility, 2.2 Puma, Indus Silver Not just transport more like a religion |
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31st Aug 2022 11:03am |
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| nolift911 Member Since: 24 Nov 2021 Location: Virginia Posts: 11  
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Interesting - what do these spacers look like? As far as I know the truck is bone stock.... |
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31st Aug 2022 12:35pm |
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| MercianRover Member Since: 07 Apr 2022 Location: Culworth Posts: 141 
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They are dark in colour like ebony and have an arrow moulded to show the correct orientation (airflow).
Item 63 on this page: https://www.ukmgparts.com/catalogue/mgb-mi...t-manifold Note that the ethanol content will make modern petrol more prone to evaporation and vapour lock.[/url] |
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31st Aug 2022 12:47pm |
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| nolift911 Member Since: 24 Nov 2021 Location: Virginia Posts: 11
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Ah ok thanks - yes those are there at least. I tried adding a fuel stabilizer for ethanol content, we are at 10% give or take but did not seem to effect it much after a few tanks with the additive. So when this happens it seems like it is rich, not a fuel starvation problem, rather over fueling. When I pull the plugs right after they are dry though. The black smoke seems to me to be over fueling.
I was thinking then back to ignition p bad coil maybe that gets hot? Resistance in it shows 1 which is within range. Jeff |
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31st Aug 2022 12:52pm |
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| Rabbitwabbit Member Since: 31 Mar 2021 Location: Blackpool Posts: 38 
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I run an old Range Rover classic on twin carbs and the new E10 fuel did have some impact. Sometimes I would find that fuel simply evaporated from the carbs when hot after a run - requiring a degreee of cranking before it would start - even when assisted by an electric fuel pump. I also found that the vehicle would stink of petrol fumes when in the garage after a run - this was down to the extra ethanol content escaping through the rubber pipes. The solution was to fit new E10 compatible plastic fuel pipes. This stopped the fumes in the garage and helped through less fuel evaporation. ----------------------------------------------
1997 Land Rover 110 1981 Range Rover Monteverdi Design Study 1974 Range Rover 1959 Series 2 (Now sold) 1971 Range Rover (Now sold) 1973 Lightweight (Now sold) 1981 Range Rover 4 door (Now sold) 1957 Series 1 LWB (Now sold) 1973 Range Rover (Now sold) |
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31st Aug 2022 1:28pm |
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| nolift911 Member Since: 24 Nov 2021 Location: Virginia Posts: 11
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So you put an electric in line with the existing....?
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31st Aug 2022 1:29pm |
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| Rabbitwabbit Member Since: 31 Mar 2021 Location: Blackpool Posts: 38
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My Range Rover doesn't have the old mechanical lift pump - only an electric facet pump. When the ignition is switched on (before starting) I can hear the fuel prime through the system and you can see the fuel flowing from the tank, through the pump to the carbs, then returning via the return pipe to the tank. Therefore, when the carbs demand fuel there is a plentiful supply. ----------------------------------------------
1997 Land Rover 110 1981 Range Rover Monteverdi Design Study 1974 Range Rover 1959 Series 2 (Now sold) 1971 Range Rover (Now sold) 1973 Lightweight (Now sold) 1981 Range Rover 4 door (Now sold) 1957 Series 1 LWB (Now sold) 1973 Range Rover (Now sold) |
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31st Aug 2022 1:34pm |
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