tight hoses

So i was helping a friend do a fuel filter change on his 01 Nissan Altima and located the filter on the firewall. After looking and toying with the hoses connecting to the inlet and outlet they became to big a hassle. An hour of so passed (no exaggeration) trying to tug the hoses from their connections to about 2cm of avail.

I was wondering what the best way to loosen these hoses up to free them and connect the new filter

I haggled with the idea of using a lighter and heating up the connection point, although figured fire with a fuel filter was a baddd idea

If they are short hoses going to metal lines I CUT them off and replace

well as far as we went today, we ended up cutting the first hose short

although putting it onto the new filter was ridiculous too, i actually ended up getting my tire air pump and trying to pump air @ 40PSI or so to get the hose to expand while twisting it onto the new filter. Didn't work perfectly but helped

im not so sure if that hurt the new filter though, as they fuel rail when running experiences a similair pressure


any other suggestions, buying new hoses is what i plan on doing after the suggestion fail

I use a little bit of oil on the filter to help the hoses slide on

I use a pair of pliers to twist the old hose loose from the filter, sometimes cutting it off is the only way. It sounds like the hoses are very brittle rubber or a different material. A heat gun/blow dryer with oil might help soften them up for install.

bad venge wrote:

I use a little bit of oil on the filter to help the hoses slide on

i had feared doing this, as its a friends car and didn't want to get any motor oil in his fuel rail. Im starting to think it won't be a huge factor to try this

byte wrote:

I use a pair of pliers to twist the old hose loose from the filter, sometimes cutting it off is the only way. It sounds like the hoses are very brittle rubber or a different material. A heat gun/blow dryer with oil might help soften them up for install.

thanks for the input, prob have to go and get a new hose. throwing in the towel is always sucha b*tch feeling though

JSewell wrote:

i had feared doing this, as its a friends car and didn't want to get any motor oil in his fuel rail. Im starting to think it won't be a huge factor to try this

A little motor oil in the fuel rails won't hurt anything. It'll burn it off in the first minute or running.

Yup the gas dilutes it and it burns away in a minute / Some is trapped in the hose (below the clamp) and it helps remove them next time as well