Fuel starvation / tank baffles

Juular · Jan 17th, 2023, 14:55

I'm curious, is the stock fuel tank meant to be baffled?

I'm getting fuel starvation whenever I'm around 1/4 tank and go round a long left hand bend, such as a motorway flyover.

It may be a case that they all do this, just want to know if I should be fixing it.

Clifford Pope · Jan 18th, 2023, 17:44

I don't think they do have baffles.

Could it be that the in-tank pump is weak or has failed? The system usually continues to work on the main pump alone, but struggles when the level gets low.

Juular · Jan 19th, 2023, 08:42

Doubtful as it's brand new. It will run the tank dry without issue as long as I don't do any long corners!

Looking into this further there should be a cylindrical bucket shape that the pump sits in that should act as the baffle, or at least hold enough petrol to get you round a corner.

I wonder why this isn't working as expected.

Big 240 · Jan 19th, 2023, 09:42

Quote:

Originally Posted by Juular

Doubtful as it's brand new. It will run the tank dry without issue as long as I don't do any long corners!

Looking into this further there should be a cylindrical bucket shape that the pump sits in that should act as the baffle, or at least hold enough petrol to get you round a corner.

I wonder why this isn't working as expected.

When I rebuilt my pump I had a good nosey in the tank and your right, there is a cylindrical walled area that the pick up sits in. I wonder if your filter has maybe got squashed up? I know mine did as I measured the distance from top to bottom to ensure it sat correctly etc.

Juular · Jan 19th, 2023, 11:51

I'm actually wondering if the opposite is true, and I need to extend it a little.

The filter is also new, and has a pretty strong spring inside to stop it collapsing.

I guess I should get the measuring tape out.

Jan 17th, 2023, 14:55	#1
Juular Senior Member Last Online: Yesterday 21:35 Join Date: Sep 2020 Location: Falkirk	Fuel starvation / tank baffles I'm curious, is the stock fuel tank meant to be baffled? I'm getting fuel starvation whenever I'm around 1/4 tank and go round a long left hand bend, such as a motorway flyover. It may be a case that they all do this, just want to know if I should be fixing it.

Jan 18th, 2023, 17:44	#2
Clifford Pope Not an expert but ... Last Online: Yesterday 17:57 Join Date: Dec 2001 Location: Boncath	I don't think they do have baffles. Could it be that the in-tank pump is weak or has failed? The system usually continues to work on the main pump alone, but struggles when the level gets low.

Jan 19th, 2023, 08:42	#3
Juular Senior Member Last Online: Yesterday 21:35 Join Date: Sep 2020 Location: Falkirk	Doubtful as it's brand new. It will run the tank dry without issue as long as I don't do any long corners! Looking into this further there should be a cylindrical bucket shape that the pump sits in that should act as the baffle, or at least hold enough petrol to get you round a corner. I wonder why this isn't working as expected.

Jan 19th, 2023, 11:51	#5
Juular Senior Member Last Online: Yesterday 21:35 Join Date: Sep 2020 Location: Falkirk	I'm actually wondering if the opposite is true, and I need to extend it a little. The filter is also new, and has a pretty strong spring inside to stop it collapsing. I guess I should get the measuring tape out.

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