fuel line instalation

[at0075]

Gonna run a braided fuel line to my pressure sending unit out of fuel assembly under fuel filter and just wondering how much fuel will cone out when i pull the Alan head bolt

[howell_jd]

None if you take the cover off of the secondary filter and use a siphon (turkey baster is often suggested) to drain the bowl.

Jonathan

PS - I'd still put a rag under the test port as a drop or two always remains.

[JasonAmericanBulldog]

when i siphoned mine out, i got about 8-12 oz out, as it filled about 1/2ish or a little more of a empty 16oz water bottle. be careful as the test port doesnt take any effort to strip or crack and you'll be buying an entire new housing assembley....the plug on my test port was a 6mm allen/hex head

[at0075]

Thanks guys . Didnt think about sucking it out . I wasn't sure if it would have pressure on it or not didn't feel like taking a diesel bath lol . The Allen is stuffed down in there good. Might un hook the hose coming off radiator for more room. Pulling wasn't what I was worried about, trying to tighten that adapter on the hose is gonna be tough

[howell_jd]

Disconnect your battery first...braided line conducts...don't ask me how I know...

Put the adapter in first [M12-1.5 (male side) x 1/8 NPT (female side)] (NOTE - it has an oring to seat).
Put the hose adapter [1/8 NPT (male side) x -4 JIC] on next (NOTE - use teflon tape to seal the threads...avoid excessive use and avoid the last two threads)
Put the hose on the hose adapter (the hose ends swivel)

I don't foresee a challenge with the tightening here...it is more awkward getting the test port plug off because of its position...to facilitate you could remove the intake elbow and then have lots of room.

Just remember this is part of the fuel system so safety is paramount and the more preparation you put into this at the beginning will make the process much easier (and safer...did I say that?).

Jonathan

[JasonAmericanBulldog]

it's easiest to remove the tube from the IC to the intake elbow, and the air intake itself. and just push down on the radiator hose. not sure how much coolant will come out if you pull that hose, but probably a lot?

[at0075]

Originally Posted by howell_jd

Disconnect your battery first...braided line conducts...don't ask me how I know...

Put the adapter in first [M12-1.5 (male side) x 1/8 NPT (female side)] (NOTE - it has an oring to seat).
Put the hose adapter [1/8 NPT (male side) x -4 JIC] on next (NOTE - use teflon tape to seal the threads...avoid excessive use and avoid the last two threads)
Put the hose on the hose adapter (the hose ends swivel)

I don't foresee a challenge with the tightening here...it is more awkward getting the test port plug off because of its position...to facilitate you could remove the intake elbow and then have lots of room.

Just remember this is part of the fuel system so safety is paramount and the more preparation you put into this at the beginning will make the process much easier (and safer...did I say that?).

Jonathan

I got bored the other day and assembled everything together. I did use teflon but I think I might dis assemble everything. Might make it easier the way you stated above. I might remove intake elbow and hose. Do I need to teflon tape the 12x1.5 male that threads into bowl ? Thanks. Very helpful

[JasonAmericanBulldog]

i've read, and been told it's best to use liquid thread sealer and that it's best avoid the tape in regards to the adapter

[howell_jd]

There's no danger with using teflon tape with diesel BUT I advocate proper application of no more than two wraps around the threads AND avoid the getting the tape over the end where it could cause foreign debris contamination if ingested to the fuel system; pipe dope works too. To each his own. Equivalent alternatives each with positive and negative considerations. The only reason I would disassemble is if I detected the presence of a leak. A fresh connection tends to make a crush seal if not fiddled with - if you ever loosened or removed the connection later, I would seal it (tape or dope).

Jonathan

[at0075]

Well Idid go more than two wraps and with what you said I might take it apart and re do it. So I should also tape/seal the threads goin into bowl also? And to the question about losing antifreeze from the hose. If its cold and you release the pressure it shouldn't run out maybe a dribble. Just my experience in the past . Could be different this time lol