Sir David Barmy mentioned replacing fuel lines in a post to Speedy regarding throttle cables. Suzuki say to replace every 3 years, bit over the top, mine are original. So, I went off for a look & there doesn't seem to be any threads on replacing them, so here we are . . . the start of a thread on fuel lines.
Who's changed theirs? What did you use? Did you do the HP fuel filter mod at the same time? Did you do the LP mod? What connectors did you fit on & where do you get them from. We'd obviously want something better than the 'lovely' oem connectors.
Is it necessary to reinstall the black spiral protectant round the hose? Clear hose fine? What about braided?
Thoughts, advice & general discussion gentlemen.
Col, think weve done this before. Normal EFI fuel hose i used. I put spiral stuff back on, needed, no idea. Connecters, heaps of diff types. http://www.directindustry.com/prod/norma-group/product-15287-506547.html
The HP fuel line is made from hard plastic. The reason for this imo is that rubber-particles may clog the injectors. The LP line is rubber, which is no problem as it is before the filter. I'd use the OEM for the HP line. Whatever for the LP line (just ensure to install it so it doesn't kink).
Andre, rubber EFI hose is used on millions of vehicles. Not a problem i can see.
Well Grog, I can see a problem. As do Suzuki engineers and those guys who service injectors (edit: would certainly make them more money if they used rubber) :smile2:
Isnt Viton rubber?https://www.pirtek.com.au/products/productcategory/new-products-and-promotions/fuel-injection-hose
I had rubber 10bar lines, with 7.5mm ID.
Tank side, I use OEM quick connector, which I cut out from OEM line. Work for me without any issues.
Injector side, I just connect hose on hard line and fix it with hose clamp. Also there were no issues.
I use this setup, when I had outside fuel filter solutions.
Now, I had my HP fuel filter inside the tank, so I replace rubber fuel hose with SS braided PTFE AN6 lines, and use AN fittings.
I was searching for solutions, but I could not find anything better, then just using 5/16 quick connector to AN6 adapters on both sides.
Yes, I would call Viton rubber. Rubber has developed from specific to a more generalized term. Plastic is also very generalized. I guess being more specific would help :grin:
Certainly lots of different material fuel lines available.
The hard plastic can very well be plastic-like PTFE. As I am reading on the subject I have to revise what I said about the Suzuki engineers. Main reason appears to be an effort to comply with emission requirements regarding vapor leaks. The "plastic also required the use of these quick connectors. BTW, PTFE lines have to have carbon in them, either as a lining or mixed with the PTFE to prevent static charge.
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Sounds like a winner Grog
I like Northerns idea of pushing the hose onto the tank outlet and fuel rail & securing with a clamp. Having the hose come back to 2 90 degree bends could facilitate having the quick connector placed there, instead of at the tank, much easier to get to & 'de-stressing' the act of undoing & doing up those bastard clips. Very occasionally they work nicely for me, other times, nope, not going.
Quote from: KiwiCol on Friday, 05 July 2019, 03:27 AM
I like Northerns idea of pushing the hose onto the tank outlet and fuel rail & securing with a clamp...
@KiwiCol In woul point your attention, what hose was pushed on only on injectors side. On tank outlet, I use 90° quick connector, which I cut out of OEM fuel line. it's suits 7.5mm line perfectly.
Issue is, what there is no space to bend smoothly hose at the tank outlet side - the airbox will be on a way. If it will be possible to bend tank outlet itself, facing horizontally and backward, then it would be possible.