Mick 62

LS400 SLOW FILLING OF PETROL

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Hii LOC members, i'm fairly new to the club but owned my LS400 for around 3 yrs now. Its a MK4 1998 in good condition with a few age related marks etc. but runs well at just over 142,000 miles covered. It's a great cruising car and i love the build quality, really good. I do find myself with an issue of late thought when i'm refulling at the petrol garage, it takes ages! I end up just trickling it in slowly or the pump cuts out. I believe there's a separate vent line back from the tank to the refil nozzel inlet it's self. Could this be blocked? If so how woiuld i clear that out? Or is it some thing else.If anyone can shine some light on this it would be great ! Thanks Mike.

 

 

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sounds like you might have some sort of air lock in there somewhere. I sometimes suffered the same issues and just rocked the car gently to and fro ........  whether that made any difference i know not. I haven't had the problem for years

Best of luck with it

Malc

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There is a breather pipe from the tank to the filler pipe which vents air from the tank when filling up which may be blocked. Either that or there’s a blockage in the filler pipe. Have you tried pushing a piece of plastic tube down the filler to see if there is an obstruction?

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Mike,

Do you push the filler nozzle in up to its hilt? If so try pulling it back a little. 

John

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Thanks Steve, i did try the garden hose down the filler pipe as you kindly suggested. There's a small flap under the filler cap, so pushed through that, them 18" downthe tube there's what seems like another flap, so pushed through that and into the tank i would imagine. I didn't go far beyond this second flap as it was digging into the pipe as i pulled it back again and trying to prevernt the withdrawl.Didn't seem to be a blockage . I assume that the rising head of fuel as you are filling must open this bottom flap and let petrol into tank? Mike

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