diesel priming device Detroit

windtrader · August 10, 2018, 11:18:53 AM

@JC - what is interesting about this system is it catches water in the fuel, regular filters do not.

#Clifford - It seems the fuel line length should be as short as possible between the filter and the engine. Keeping it in the engine compartment is probably the safest location in case of any fuel leakage.

Iceni John · August 10, 2018, 12:19:19 PM

What's the difference (if any) between this Davco and the Racor 900FG that my bus came with as its primary filter? The Racor separates out any water that can then be drained out its bowl, and its 2 micron filter takes out all the chunks. My Racor's bowl has become cloudy over the years, but replacement bowls are still available. I still have a secondary filter on the engine after the DDEC cooler plate.

John

luvrbus · August 10, 2018, 12:36:05 PM

Racor is a good filter they just won't clean as much as the Davco,I think the 900 is limited to 90 GPH for cleaning,I replace 8 of the Racor this spring with the Davco 382 because it was taking 2 to 4 of the Racor to do the same as 1 Davco 382,AT&T looks at the bottom line only is why the change was made

Dave5Cs · August 10, 2018, 02:58:31 PM

Don you bring up a good point about draining the water from the fuel and or tank. some MCI's actually have a tank drain little flap on the curb side low on outside to drain water out of tank bottom. I think the 5A & B and the 8"s. My 5C does not have any tank drain. Don't know about your 7 either. Small curbside door by tank area.

I do the same as JC and no fuel problems or priming etc.
Also there are no Truck wrecking yards by us, LOL

luvrbus · August 10, 2018, 05:04:25 PM

If you just want to drain water replace your Napa 3120 fuel filter with the Napa 3123 water separator filter that has a drain at the bottom,Upgrading to the Davco is like upgrading from the old canister type to the spin on fuel filters only better

Dave5Cs · August 10, 2018, 08:33:47 PM

Clifford Thanks made note of that.

Jim Eh. · August 11, 2018, 04:23:18 AM

Prime? Never had difficulty priming 2 or 4 stoke DD, Cummins or CAT. Now Mercedes ... that's a whole different ball of wax. We had to make up a primer made from a 12v hand held transfer pump just to get the pressure AND the volume required for those.

Caveate ... as of yet!

Of course, nobody INTENDS on running out of fuel and everyone ALWAYS pre charges their fuel filters properly ... right?

Geoff · August 11, 2018, 05:20:59 PM

One of the first things when I got my bus was put a quality fuel gauge in it. When it gets to empty, I know I still have at least 25 gallons in it, 125 gallons total. I always fill up and stay ahead of the game.

dtcerrato · August 11, 2018, 07:26:39 PM

On our AK run the one rule of thumb we always followed was to stay on the top 1/2 of the tank. Our gauge doesn't move off full until it gets down to 5/8 tank then is accurate till empty.

luvrbus · August 11, 2018, 07:46:28 PM

My fuel gauge is accurate when it says 1/2 of tank it holds 115 gals just what it should according to the tank size ,I topped it off today for $314.91

richard5933 · August 12, 2018, 04:56:26 AM

Fuel gauge? What's a fuel gauge?

165 gallons. 6.5 mpg at worst, 8.5 mpg at best. Range of between about 1000 to 1400 miles. A little less if we're running the generator while camping.

We put a yellow Post-It note next to the odometer with the next fill up point. Usually set at 600 miles down the road. Hasn't failed us yet. Gives us a few hundred buffer zone in case we can't find a fueling station just when we start looking.

Curiously, I asked the PO (who was friends with the original owner and knew of its initial purchase from GM) why it was ordered without a fuel gauge. Apparently none of the buses for his charter company were ordered with fuel gauges. The tank held so much fuel that the range was beyond the limits of any driver's daily run. They had a policy of fueling every day at the end of the run, so no fuel gauge was needed.

luvrbus · August 12, 2018, 05:48:19 AM

People run out of fuel because only 80 to 85% of the fuel is usable of what a tank holds ,I go out all the time where people tell me it's not out of fuel I should have 20 gals left.I know you guys don't like electronic engines but the gizmos the electronic engines uses are on the money no guess work,plus you never see a big swing in fuel mileage like Richard a 50,000 lb bus 45 ft long all of them will be in 7 mpg range

buswarrior · August 12, 2018, 06:29:59 AM

Nothing had a fuel gauge back in antiquity.

What for?

Truck or bus, you filled it up daily. Another gizmo that doesn't last the life of the vehicle, inconsistent between vehicles, you can't trust 'em in a slip seat operation, and contributes NOTHING to the profitability of the vehicle.

The grizzled veterans of the road used to say, the only people who run out of fuel are people WITH fuel gauges...

I hope all you trusting souls do a daily walk around that involves a knee on the ground looking for escaped fluids???

Perforating aluminum fuel tanks and all that...

happy coaching!
buswarrior

luvrbus · August 12, 2018, 06:37:21 AM

Everything had a fuel gauge back then it was called a stick or a hose,some drivers were creative with the sticks with the marking

Lin · August 12, 2018, 09:48:57 AM

I did not have a fuel gauge up until a couple of years ago. I would look to fill up at about 500 miles, which I figured was a bit more the half empty. Now that I do have a gauge, I fill up when it tells me it is about half empty, which is about 500 miles. Anyway, I like that added information the gauge provides since I only have a hubometer, which my wife refuses to read while we're traveling. All the wiring for the fuel gauge was already in place from the factory and only needed the parts to complete.