The Delica has been a bit lumpy with starting recently, glow plugs seem OK, so I thought I may as well change the fuel filter and was greeted with this:
Lots of little black bits - which you can see trickling down the inside of the filter housing here:
A closer look revealed some of the fuel pipe was melting away - not sure if this is just from bio use or from the acetone I've been adding:
Fortunately I've been meaning to replace the food-grade 8mm braided pipes in the engine bay for a while now as they were delaminating badly, so I'd previous bought a decent length of 8mm nylon pipe instead - it's pretty cheap as it turns out.
I've pulled out all the pipework in the system (some of which turned out to be just 7mm to my surprise - at the tank end) and replaced with the 8mm nylon, right back to the tank. This eliminated a bunch of joints so less to leak.
So here we have 8mm up from the tank, course filter, one way water valve (still working very well), assister facet pump powered off stop solenoid feed, and 10" filter housing tucked next to the rad where it gets nice and toasty for the purposes of melting HMPEs in the winter
The final stretch back to the IP itself is marine grade hose, since it'll be hot and vibrating at the pump end. I know it's good as I've had a stretch of this tube in the system for a while now.
Much happier with the fuel system now - though ideally I'd like to drop the tank and replace the short 7mm section there with 8mm too (it's only about a foot long though so no big deal really).
Liking the nylon, it's see through enough to see the fuel and any bubbles, though a little tough to get over 8mm barbs - heating to 110C with a hot air gun seemed to help with this. Clips are all 8-10mm type.
