Car performing better on reserve fuel tank / near empty
I fell asleep, what is this thread about?
Member
Joined: Nov 2013
Posts: 140
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From: Maryland, USA
2013 C300 sport 4matic
Super Moderator
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Please read my posts. I clarified not running the tank empty. I said run down to low fuel warning.
You are just being obtuse.
Member
Joined: Nov 2013
Posts: 140
Likes: 2
From: Maryland, USA
2013 C300 sport 4matic
Ok cool , I'm sorry for being obtuse Glyn, but I wanted to know "clearly" where you stand on this topic and I think we are basically on the same page with some minor differences of opinion. Have a good night.
Last edited by tonyteetime; Feb 14, 2014 at 09:45 PM.
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Joined: Jan 2016
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From: UK
C200 CDI Diesel Estate
Just a thought
Ok, so don't shoot me down for this.
I had a problem simialr to the original posters when i had a volvo (yeah.. a volvo deal with it
).
My problem was when i filled the car up with petrol, it would run ok for a few miles then start behaving badly - coughing, hesitation etc. When I got to my destination , parked up and returned - it would run fine for a while - then again cough etc.. slowly the distances between the 'incidents' got further apart until a refill. It ran perfectly on near empty or 1/4 full.
The problem was no air was being allowed in to the tank to replace the fuel being fed through to the engine - this caused a partial vacuum and made it more difficult to feed the engine with petrol. When the car was parked - the vacuum was released over time - the reason it took longer to cause the problem was because there was more and more air in the tank and it took longer to create the partial vacuum - therefore it ran better with an emptier tank (was blockage in filler cap - used a needle to resolve it!)
ok, there are my thoughts from a first time poster - relevant or not - get your guns out!
Now just got to find some panels for my car - bit of an accident - thinking about repairing and keeping my car - gutted! (w204 2010 C-Class need bumper, grill, bonnet, NS wing - will check on here for spares - any guidance would be cool, especially a how-to guide on wings etc...)
cheers all,
cake
I had a problem simialr to the original posters when i had a volvo (yeah.. a volvo deal with it
).My problem was when i filled the car up with petrol, it would run ok for a few miles then start behaving badly - coughing, hesitation etc. When I got to my destination , parked up and returned - it would run fine for a while - then again cough etc.. slowly the distances between the 'incidents' got further apart until a refill. It ran perfectly on near empty or 1/4 full.
The problem was no air was being allowed in to the tank to replace the fuel being fed through to the engine - this caused a partial vacuum and made it more difficult to feed the engine with petrol. When the car was parked - the vacuum was released over time - the reason it took longer to cause the problem was because there was more and more air in the tank and it took longer to create the partial vacuum - therefore it ran better with an emptier tank (was blockage in filler cap - used a needle to resolve it!)
ok, there are my thoughts from a first time poster - relevant or not - get your guns out!
Now just got to find some panels for my car - bit of an accident - thinking about repairing and keeping my car - gutted! (w204 2010 C-Class need bumper, grill, bonnet, NS wing - will check on here for spares - any guidance would be cool, especially a how-to guide on wings etc...)
cheers all,
cake
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 192
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Nothing strange about that. A breather problem could potentially cause such behaviour but all conditions would need to be on the edge of spec.
