Mazz's estimate (it's a PDF rather than a screenshot/image):
https://drive.google.com/drive/folders/1yRAd4kS1CXnCNCtXlgpMlYB5D9ek-gzs?usp=sharing
From reading that, I'd want to know the diagnostic machine used, fault codes found, the fuel pressure reading they got and what the "required" fuel pressure is and what checks they did to determine it needed two glow plugs.
"Spend 1 hour investigating faults" followed by another hour carrying out investigations followed by a further 2 hours of investigations. I'd want to know what specific checks, specifically for the "pedal checks" and glow plugs) they carried out to use up 4 hours of time. Presumably they hooked up a fuel pressure gauge to determine the pump output was too low. There's not a lot there to justify 4 hours of labour IMO.
It sounds like they're charging you an hour to simply connect their machine and read the codes - which certainly doesn't take an hour.
I'm no expert but I really don't think the glow plugs will make a difference to starting performance in our current weather! They certainly don't in our diesel Freelander. They might have found something electrically wrong with them though. Open circuit, short circuit etc.
I'd also like to know what brand of in-tank pump they fitted as the price seems astronomical. I'd expect genuine LR for that price!
https://www.lrdirect.com/ESR1111-Fuel-Pump-Sender-Unit-P38-2.5D/
Hopefully someone more familiar with the diesel engine can comment on how reasonable the time to replace two glow plugs and the in-tank pump is.
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