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Fuel line cut off.

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rosieuk
Member

Posts: 184

Fuel line cut off. Sept 8, 2018 20:18:29 GMT via mobile

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Post by rosieuk on Sept 8, 2018 20:18:29 GMT

I've replaced the front end between the steel pipe & carburettor float chamber. I read a way of making an ersatz immobiliser - cutting the line between the fuel tank union and the solid line from the back of the car and fitting a 6mm (1/4") cut off valve (which can probably be automated with a dashboard switch using a remote servo)..
I've examined the back of the car and I'm a little concerned that the solid line is fitted within a centimetre of the exhaust (on the same droplink) - it looks factory but is this correct? If so in a rear end collision this makes the Ford Pinto look safe. Especially if a low front car dives under hard braking and goes under the bumper.

dave1800
Global Moderator

Posts: 3,589
Attribute: Technical Guru.

Fuel line cut off. Sept 9, 2018 5:57:40 GMT

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Post by dave1800 on Sept 9, 2018 5:57:40 GMT

I have only heard of one crab catching fire after a heavy rear end impact although given the location I would imagine there may have been more. It wasn't identified as being particularly hazardous compared with other vehicles at the time but nowadays the tank would be located further forwards. I think a fuel cut off is a very good idea if you have an electric fuel pump as the line can be disconnected in a front end shunt and continue to pump fuel over the hot end of the exhaust, whereas the mechanical pump stops with the engine.

Given your voltage drops with the slow indicator and weak sealed beam output, and the other electrical problems you have identified, I would advise focusing on the cause. Probably poor earths but it could be problems with the loom and connectors that is more likely to lead to the fire you are concerned about and quite likely to leave you stranded on a dark cold wet night!

regards

David