So before I attack the fuel lines on the car, I thought I'd experiment with this short fuel pipe that sits above the diff... you've got me interested in molasses as it sounds quite gentle (and obviously is non-acidic). With all my white vinegar efforts previously, I've always finished by brushing on bi-carb soda and washing off with water in order to neutralise the acid and ensure it doesn't keep eating all the steel away.
So Molasses play time began last week...
Here's the test pipe:
Fuel Pipe 1.jpg 205.62K
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Hard to get good photos, but this one did capture it well.... as you can see, it's pretty filthy... brown, rusty, plenty of 'build-up' present... certainly can't be ignored..
Fuel Pipe 2.jpg 56.78K
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Fuel Pipe 3.jpg 58.7K
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At first, I wanted to test the aqua-pump method as this is how I'll have to do the main lines.... my mixture was quite strong - somewhere around 7:1 water/molasses:
Fuel Pipe 4.jpg 185K
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Had that going on and off for the first day... then killed the pump. So ended up just throwing the pipe into the bath and fully submerging it...
I let it sit for a bit over a week, then had a look..... externally, brilliant - a slight wipe with my finger and the outside looks new again (really just wiping off dirt)...
Fuel Pipe 5.jpg 151.09K
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Internally, it was slightly better, but still far from shiny clean....
Fuel Pipe 6.jpg 60.91K
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I blew it out with compressed air and that definitely seemed to help move some of the built up gunk...
Fuel Pipe 7.jpg 81.72K
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I think it's heading in the right direction, but for now, I've thrown it back in the bath for another week.