Rob Walker Posted May 30, 2021 Share Posted May 30, 2021 Friend ran his car very low on petrol today then filled up at the Petrol Station. The car will now not start even with jump leads and a large battery. All usual things checked like inertia cut off and immobiliser. Anyone had this problem what was the fix. The only thing I can think of is that the car uses a single ended fuel line and its become air locked, but with an additional battery and long cranking period this should have been forced through the injectors. Link to comment Share on other sites More sharing options...
John Vine Posted May 30, 2021 Share Posted May 30, 2021 Does the pump still prime when he turns on the ignition? I'm wondering whether it's a simple as a blown fuse?JV Link to comment Share on other sites More sharing options...
7 wonders of the world Posted May 30, 2021 Share Posted May 30, 2021 Wont be an air lock, started many new cars with empty tanks be adding fuel and priming until the pump goes quiet. Link to comment Share on other sites More sharing options...
garybee Posted May 30, 2021 Share Posted May 30, 2021 Usual suggestion, blast of easy start in the intake to rule out fueling issues. If it starts, you know it's not getting fuel. Also, need a bit of clarification on the OP. Did it not start immediately after refuelling or later on? Did it cut out before he refuelled? Link to comment Share on other sites More sharing options...
SM25T Posted May 30, 2021 Share Posted May 30, 2021 Check all fuses. Check all relays are pushed home ... this needs doing every 6 months as they do work loose. Link to comment Share on other sites More sharing options...
Wrightpayne Posted May 30, 2021 Share Posted May 30, 2021 On my 911 I had the relay for the engine bay cooling fan fall out completely - this is buried under the parcel shelf carpet. I'd only had the car a couple of weeks, got a big red dash error warning. It turned from a worrying expensive fix to smug DIY repair! Link to comment Share on other sites More sharing options...
EEK Posted May 31, 2021 Share Posted May 31, 2021 Have a look at my post 6 here https://www.lotus7.club/forum/techtalk/fuelpumpfuel-filter-or-something-else Link to comment Share on other sites More sharing options...
nutty7 Posted May 31, 2021 Share Posted May 31, 2021 Check it wasn't filled up with diesel, wouldn't be the first. Link to comment Share on other sites More sharing options...
David_Long Posted May 31, 2021 Share Posted May 31, 2021 My 2p, make sure the tank is over half full after running it dry, prime 4 or 5 times by turning the ignition on then off. If it doesn't start first time, leave it half an hour and try again. Link to comment Share on other sites More sharing options...
Rob Walker Posted May 31, 2021 Author Share Posted May 31, 2021 Thanks chaps, we are all wasting our time the owner is not even prepared to check if he has 12v at the fuel pump. Prefers to pay someone else. The new breed of 7 owner sadly. Link to comment Share on other sites More sharing options...
Mrp Posted May 31, 2021 Share Posted May 31, 2021 At least you tried Rob Link to comment Share on other sites More sharing options...
John Vine Posted June 1, 2021 Share Posted June 1, 2021 Re #10: Oh dear, that's a shame. Credit to you for trying to help.Perhaps the owner can be persuaded to share the garage diagnosis and fix? That would help other owners with similar problems, although it could be a tad embarrassing if it transpires he's paid out a significant wedge for someone to replace a fuse.JV Link to comment Share on other sites More sharing options...
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