Mobile mechanic in coastal Virginia?

Scott & Heather · May 27, 2016, 03:45:30 PM

And we are sure the fuel ball valve is open? Sorry Sean, I had to ask

Sent from my iPhone using Tapatalk

Dave5Cs · May 27, 2016, 07:31:37 PM

Well now we know. Sounds like a plan. That should do it.Hope that is all it is. Thinking positive thoughts for you guys.
Clifford is on the road to Texas to eat Mudbugs all weekend.
Dave5Cs

DoubleEagle · May 27, 2016, 07:56:41 PM

It sounds abnormal for the fuel in the sprayer or the Davco to be going through so fast. I once ran out of fuel on a mountain in the Northeast, I poured fuel in the Davco, started up, and drove up the mountain for several miles to an exit. Something is wrong with the pump, the Davco, or the fuel lines, in my opinion.

eagle19952 · May 27, 2016, 08:23:03 PM

normally the t-stat crossover pipe is arched enough to clear the fuel pump IIRC... In fact i thought that was the reason it was arced.

Sean · May 28, 2016, 05:08:40 AM

Quote from: DoubleEagle on May 27, 2016, 07:56:41 PM
It sounds abnormal for the fuel in the sprayer or the Davco to be going through so fast. I once ran out of fuel on a mountain in the Northeast, I poured fuel in the Davco, started up, and drove up the mountain for several miles to an exit. ...

Really? On an 8v? I normally get about 6.3 mpg, and that's on level ground. My Davco bowl holds about a quart, so the furthest I could possibly go on just what is in that bowl would be 1.6 miles, but, and this is key, that would be if the engine itself used all that fuel. My recollection is that the 92 series actually returns far more fuel to the tank than it burns; even if that ratio is 1:1 that would be at the most 0.8 mile before the bowl was empty. At 30mph that would be 100 seconds. Of course at idle things might be slower, but for sure I could not drive my coach several miles even on level ground with just what is in the Davco bowl.

Quote from: eagle19952 on May 27, 2016, 08:23:03 PM
normally the t-stat crossover pipe is arched enough to clear the fuel pump IIRC... In fact i thought that was the reason it was arced.

Mine is not nearly as arched as the one in your photo, because the ECM is right above it. Also I have a slightly different pump.

UPS says the pump will be in Richmond by 10:30. I should have an idea before we leave to get it whether or not I will need to drain the coolant. I first need to get the Davco out of the way and the giant bracket it's bolted to.

I have my fingers crossed that the pump is the culprit here. Before I install the new pump and make it unreturnable. is there something I can look for on the old pump once it's out to confirm that it's bad?

-Sean

Dave5Cs · May 28, 2016, 06:26:42 AM

After taking it off look at the drive plate ( small plate with a hopefully square hole in it). If it is egg shaped its time to replace that if possible otherwise replace the pump.HTH
Dave Walker

luvrbus · May 28, 2016, 06:41:35 AM

The drive yoke may be striped, you can spin the pump with a drill and check it, that is a high capacity fuel pump I hope they send you the right one,if your pump feeds each head separate the cross over has to be removed.It fairly easy except for the 1 bolt it's a bitch without a "C" wrench

good luck

DoubleEagle · May 28, 2016, 08:05:21 AM

Quote from: Sean on May 28, 2016, 05:08:40 AM
Really? On an 8v? I normally get about 6.3 mpg, and that's on level ground. My Davco bowl holds about a quart, so the furthest I could possibly go on just what is in that bowl would be 1.6 miles, but, and this is key, that would be if the engine itself used all that fuel. My recollection is that the 92 series actually returns far more fuel to the tank than it burns; even if that ratio is 1:1 that would be at the most 0.8 mile before the bowl was empty. At 30mph that would be 100 seconds. Of course at idle things might be slower, but for sure I could not drive my coach several miles even on level ground with just what is in the Davco bowl.

Don't forget to allow for the fact that your bus is probably heavier, has more horsepower, and more wind resistance. Your mileage will differ as a result.

eagle19952 · May 28, 2016, 08:59:12 AM

Quote from: Sean on May 28, 2016, 05:08:40 AM

Mine is not nearly as arched as the one in your photo, because the ECM is right above it. Also I have a slightly different pump.

-Sean

Well i could have hoped.

I keep forgetting the ECM part

Best Luck and wishes...
Has your buyer appeared ?

Sean · May 28, 2016, 09:13:47 AM

Well, wouldn't you know that Western Branch diesel screwed up and did not check the Saturday Delivery box, so my part is locked in Richmond until Tuesday. I called their emergency roadside number and the parts manager is meeting me in Portsmouth to give me a different one, but we're now in the middle of a 5-hour round trip down there to get it. Grumble.

My crossover is arched but the arch points "forward" rather than up, due to the ECM. Still, by loosening the clamps I am able to rotate it up and down a bit to get to things, with some loss of coolant but not a complete drain. We'll see if I can squeeze the pump out.

Now the challenge is to get the pressure-side hose off. Hard to get a tool in there. Can anyone tell me what size wrench it takes, and which fitting I want to try to turn:

I'll be stopping somewhere on the way back from Portsmouth to try to get a crows foot or something to squeeze in there and loosen it.

-Sean

eagle19952 · May 28, 2016, 11:30:38 AM

6 point offset (15 degree) open box SEARS/SK-WAYNE..probably 5/8, 9/16. and 11/16 turn wrenches and hold wrenches...
http://www.sears.com/sk-hand-tools-sk-378-superkrome-6-point/p-SPM7970342023

these are my absolute favorite go to's for hoses and hydraulics... spendy in today's money, i have them to 2 inch....

http://www.mactools.com/en-us/Wrenches/Open-End-and-Angle-Wrenches/SDA11K/11-PC-SAE-Angle-Wrench-Set-

Sean · May 28, 2016, 07:07:06 PM

Well, I got the *&%$# pump off with great effort. I ended up taking out the three bolts that hold the ECM on, then rotating the crossover pipe down, up, down, up as needed to get the bolts out and the pump off. Lost some coolant each time I rotated the crossover, but not as bad as draining the system. I'm now the proud owner of a new set of crowfoot wrenches and stubbies from Lowes, and I needed both.

I have the new pump and it appears to be an exact match, which I would hope considering they looked it up by engine serial number. There are a couple of numbers stamped on top that differ, which I would take to be date or manufacturing codes. As a side note, the parts manager met us at the shop wearing a clerical collar, we figured on his way to officiate a wedding.

The drive yoke looks fine. I can see it is going to be a challenge lining that up on re-installation.

I can spin the old pump just between my thumb and forefinger -- very loose. The new pump is much tighter; I hope that's a good sign.

In the morning I will put it all back together. I don't have whatever dope they use at the factory that dries to a hard finish in a burnt orange color; the stuff I have (RectorSeal Tru-Blu) is rated for fuel and high vibration so hopefully it will be sufficient.

I'll post the results when I try to crank 'er up.

-Sean

Oonrahnjay · May 28, 2016, 07:35:17 PM

Quote from: Sean on May 28, 2016, 07:07:06 PM... I'll post the results when I try to crank 'er up.

-Sean

Please do. Here's hoping that this is the end.

Scott & Heather · May 28, 2016, 07:35:39 PM

Please keep us updated. I've been biting my nails for you.

Sent from my iPhone using Tapatalk

Dave5Cs · May 28, 2016, 09:48:53 PM

Good luck and at least you are on dry land!...

Dave5Cs