Fuel Tank popping?
Discussion
SILICONEKID350HP said:
mongoose said:
appologies,didnt intend to cause offence!it must be that the original cap that i used had also been modified then.i do think its a nice cap otherwise-honest
Why would anyone buy a Leven fuel cap ? Its not on the outside of the car so you can`t admire it ! just seems a waste of time .For what it's worth when I fitted my new ECU I removed the carbon canister altogether. Most aftermarket ECUs including the Megasquirt Plug and Play don't control the valve on the canister as the 14CUX does. The exception to this is the MBE system sold by TVR Power. I removed mine, and fitted a breather filter to the hose from the fuel tank, removed the one way valve in the trumpet base and replaced with a 5/16 or 5/8 UNF (memory failing) screw and blanked the hole in the inner wing the hose fed through after removing the hose from the car. Problem permanently solved.
leventech said:
FACT 1 - To meet Type Approval no fuel system is allowed to vent to atmosphere.
FACT 2 - The TVR original cap does not have a vent hole.
FACT 3 - The system when operating correctly collects the fuel vapour in the 'carbon canister'. When the car is started a valve opens which purges the canister and allows the vapour into the engine and is burnt off.
FACT 4 - When the cainister or pipe work becomes blocked the fuel pump will create a vacuum. Opening the fuel filler cap releases this with the 'hiss' and/or 'bong'of the tank returning to normal.
The Leven cap, as per the TVR original does not have a vent hole and so is not a bad design. The problem is with the car not the cap!
Jerome Anderton said:
Hi,
I think that one of the baffles in my fuel tank has broken off as I can hear something clonking when I go over a bump / pot hole. Also getting popping from tank. Does anyone know how to confirm my suspicions?
Is the cure a new tank or is there another option?
The existing tank can be cut open, baffle welded and then the tank welded back together. A good engineering shop can help you. I think that one of the baffles in my fuel tank has broken off as I can hear something clonking when I go over a bump / pot hole. Also getting popping from tank. Does anyone know how to confirm my suspicions?
Is the cure a new tank or is there another option?
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