View Full Version : Merc intake bleed lines

RB in NM
11-20-2003, 03:39 PM
I've been going nuts trying to find the small gas hose used on the Merc 2.5 intake, for the bleed lines. Seems nobody nere carries anything remotely small enough, and still hold up to gas.

The light bulb finally came on,,,, damn gray hairs/slow switch....

The local hobby shop that carries all the gas powered cars/trucks/planes/boats and such has rolls and rolls of colored Tygon tubing, wild ass colors too if needed, neons and such.
about a buck a foot.

Always make sure to check yer hoses when yer running yer motor on the hose, you might be surprised where you will find a leak....


11-20-2003, 03:49 PM
Good info!!! I am replacing all my bleed lines this winter and was wondering where to get it.

RB in NM
11-20-2003, 04:07 PM
I was at wits end trying to find that stuff out here in new mexico, no Hi-Po Merc dealers here. I've spent a week looking at all the wrong places.

I have a little RC type hobby shop right by the house and never gave it a second thought, till after the 6th or 8th Corona the other night, dinking around in the garage with the boat......lol .

Lemme know If ya need some, I can pick it up fairly easy if needed.


01-05-2004, 06:24 PM
napa has it by the rolls. .95 a foot you need about 10 feet for 2.4 carb motor:D

RB in NM
01-05-2004, 07:12 PM
I tried NAPA, Autozone, Checkers, Home Depot, Home BAse, True Value Hardwares, you name it,,,,, No luck !!

I did see at NAPA they carried a rubber windshield hose the same size I needed, but the rubber will begin to break down and introduce particles in yer fuel stream,,,,, be careful it will crack easy too once the gas hits it...

The Hobby Shop had Tygon Tubing, it's gas/fuel rated.


01-05-2004, 07:28 PM
www.hosetechniques.com. I think the bleed line is 3.2mm, but not positive.


01-05-2004, 08:59 PM
I use 1/8 inch Tygon gas line . it is a clear green color and it dresses the motor up. You can purchase it at any john deer tractor sales and service or at most lawn mower repar shops.

P.s dont forget to tie strap them all on


04-16-2004, 07:11 PM
lawnmower shops carrie it purty regularly.

Tim Seebold
12-02-2004, 09:09 PM
We have it in stock.

12-04-2004, 11:00 PM
you can get that stuff from grainger as well.

12-10-2004, 09:28 AM
i use the yellow clear type found on chainsaws. it kinks fairly easy though. what is the purpose of these hoses anyway?

12-12-2004, 10:59 PM
i use the yellow clear type found on chainsaws. it kinks fairly easy though. what is the purpose of these hoses anyway?
So the unused oil doesn't build up in your motor while you are running. its recirculation lines to reuse the oil.

12-16-2004, 07:21 PM
2 stroke outboards tend to puddle alot of fuel/oil at low speed. The recirc lines carry the unburned mix back into the engine at the transfer port area.
The lines have a one way check valve in them to keep thing moving from the front of the engine to the back. In the old days (before EPA) alot of this excess fuel/oil mix just got dumped out into the water through drain lines in the block...not cool.

12-17-2004, 12:11 PM
thanks guys :)

12-23-2004, 07:24 PM
some tygon line today, $1.30 a foot. But hey didn't want to drive all over south OK to find it cheaper. later, james

12-23-2004, 07:27 PM
outboards4life u the man!

12-23-2004, 11:24 PM
We have it in Red, green and Blue as well as the std Tygon yellow. $1/ ft plus shipping. Colors besides yellow are $1.50 per foot.

12-24-2004, 06:09 PM
outboards4life u the man!

why is that???

02-17-2005, 09:09 PM
I know this is a little late but I have been using silicone tubing from https://www.aerotrend.com/ isnt cheap but it works well

01-07-2014, 10:50 PM
never had a problem getting it from a merc. dealer

01-08-2014, 09:16 PM
Here is a good place for the fuel line for bleed lines https://www.fuel-line.com/. The 1/8" works great for bleed lines. I just bought some and it is nice stuff, fits snug on the fittings and can bend 90 degrees in 2" without kinking. Several colors available also. Also on e-bay http://stores.ebay.com/fastflowfuellines/. Fuel, alcohol, and racing fuel resistant.