Draining fuel

Engine Oily Bits, Ignition, Fuelling, Cooling, Exhaust, etc.
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Llessur
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Draining fuel

#1 Post by Llessur » Mon May 14, 2018 2:17 am

My 2500S hasn't seen the road in probably 10 years or so. What's the best way of draining the old fuel from the tank and fuel lines?
Adelaide, South Australia
1975 2500 - Murky silver
1977 2500S - White

My blog: https://triumph2500blog.wordpress.com/

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Alec
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Re: Draining fuel

#2 Post by Alec » Mon May 14, 2018 5:59 am

Hello Llessur,

Remove the fuel take off pipe from below the tank, just be aware it may be tight and the union could easily be damaged, a six point ring or flare spanner would be best.
I wouldn'y worry about the fuel lines, the fresh fuel will soon push that through.

Alec
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MK1.5 2.5 P.I.
Jaguar MK 2 (Long term restoration.)
Hymer 564 Motorhome.
Jaguar X Type Estate 2.5

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Llessur
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Re: Draining fuel

#3 Post by Llessur » Mon May 14, 2018 7:06 am

Cheers Alec - is that accessible from under the car, or through the boot?
Adelaide, South Australia
1975 2500 - Murky silver
1977 2500S - White

My blog: https://triumph2500blog.wordpress.com/

Mike Stevens
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Re: Draining fuel

#4 Post by Mike Stevens » Mon May 14, 2018 3:03 pm

Or, you can probably get most of it out by disconnecting the input to the petrol pump and draining it into a suitable container. You might need to unclip the pipe and push it down and/or raise the back of the car!

I agree with Alec about the fuel lines. You'll soon see if it is blocked when you disconnect from the pump!

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Mike.
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Alec
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Re: Draining fuel

#5 Post by Alec » Mon May 14, 2018 6:11 pm

Hello Llessur,

you need to go under the car, it is a small 90 degree bend at the base of the tank.

Alec
0465

MK1.5 2.5 P.I.
Jaguar MK 2 (Long term restoration.)
Hymer 564 Motorhome.
Jaguar X Type Estate 2.5

johnnydog
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Re: Draining fuel

#6 Post by johnnydog » Mon May 14, 2018 6:32 pm

My Royal Blue MK1 had been off the road admittedly for longer than 10 years (25 to be precise!), and the fuel tank was a corroded mess inside, and the fuel lines were totally blocked - even a welding rod couldnt get through it. It was 4 star, not unleaded but I wouldn't have though the type of fuel would have made much difference. It was a metal pipe however not plastic.
My Sienna PI has just seen the light of day after 21 years, and the fuel was drained as Alec said from underneath, and the new pump (its in the boot not at the front like a carb'd car) pushed the old fuel in the fuel pipe through to the disconnected fuel pipe at the metering unit. After a bit of coaxing it fired and ran!
I think you will get an indication of the condition of the tank innards when you drain it; alternatively you could remove the sender unit and have peak through the hole!
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1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

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