HELP M818 down

[Blythewoodjoe]

Well as fate would have it, my EUC for my trailer cleared Friday, so I took the M818 out for good test run this morning. About an hour round trip. Half way through the trip I was getting back on the interstate and noticed in 4th gear it was loosing power. This lasted about 10 seconds and then back to normal. I knew this was not good.

I exited the interstate about 10 minutes later near my home. Same thing happened in 5th gear. Very noticeable now. Wouldn't get over 40 MPH. A couple of miles later I'm crawling. The throttle has little control over the engine. When I push the clutch in the engine rev's and very slowly idles down. It also take a few seconds for any increase in engine speed when I press the pedal. It cuts off several times, once in a turn, no steering. That was alarming. I managed to get it home, but it obviously is not going any where.

So, what do you guys think? Fuel flow problems or pump problems? I have had the truck a short while and I have not changed the fuel filters yet. Also this truck doesn't crank with great ease. It only takes a few seconds, but nothing like my M813. It also idles up and down while idling. The M813 used to do that before I found and fixed a negative pressure fuel leak.

Help!

 

[bulldog_mack13]

Im going to say your filters, it really sounds like whats causing it.

 

[Ferroequinologist]

Hey Joe,
Sounds like you either have a clogged filter/line, or your IP is needing a rebuild. When were you planning to pick up your trailer? I could ride down there with you and we can use my m818 if you can't get yours up. I would try the filter first, then check the lines. Maybe blow back from the filter with air. The tanks might have some algae, might have clogged a line and or the filter.

If you want, I can come over this afternoon and we can look at it.

 

[Armada]

The filters would be my first check, especially since you don't know how long they've been installed. And check for leaks also. Good luck!

 

[jasonjc]

I found a bad/leaking hose on mine at the valve under the cab. I also found that the pick up tube in the tank is steel and had rust holes in it.

 

[Blythewoodjoe]

If you want, I can come over this afternoon and we can look at it.

I never turn down help when I need it. I don't get home from Church until 4:00 though. Call me after 4:00 if you want to come over.
Thanks, Joe
309-7928

 

[Blythewoodjoe]

DUMMY ALERT!!!

Well I spoke with Adam earlier today and found out a few things about the M818. First off, the fuel "switch" on the dash only controls the gauge. I ASSUMED it controlled which tank you pulled fuel from. Of course I wondered why there was a switch on the floor, but,,,,,,

Anyway when I was talking with Adam and discovered the switch on the floor controlled the fuel flow, I thought about how I thought I was pulling from the full drivers side tank and not from the almost empty passengers tank. Long story short I went out and looked and sure enough the floor switch was on the passengers tank and the dash switch was on the drivers tank. I measured the fuel in the P-tank and it was about 1/2". I switched to the D-tank, cranked the engine for a minute or so and shazzam the truck runs again.

I'm still going to change the filters. How do I delete this entire thread?

 

[Armada]

DOH!!! The good news is you'll never have that problem again!

 

[Recovry4x4]

We'll leave this thread up for others to learn from. Thanks for contributing Joe. At least you got it figured out before Will Wagner came along. I save all Cummins questions for him.

 

[powerhouseduece]

DUMMY ALERT!!!

Well I spoke with Adam earlier today and found out a few things about the M818. First off, the fuel "switch" on the dash only controls the gauge. I ASSUMED it controlled which tank you pulled fuel from. Of course I wondered why there was a switch on the floor, but,,,,,,

Anyway when I was talking with Adam and discovered the switch on the floor controlled the fuel flow, I thought about how I thought I was pulling from the full drivers side tank and not from the almost empty passengers tank. Long story short I went out and looked and sure enough the floor switch was on the passengers tank and the dash switch was on the drivers tank. I measured the fuel in the P-tank and it was about 1/2". I switched to the D-tank, cranked the engine for a minute or so and shazzam the truck runs again.

I'm still going to change the filters. How do I delete this entire thread?

Don't delete it! Your not the first to do this, I did it too!

 

[crasheej]

One the things you will want to check sooer or later is the hoses on that tank switch valve . They do dry rot. Then you will suck air. I know been there done that. TMs don't say any thing about them.

 

[MyothersanM1]

Ah, yes, the dreaded selector (spider...lets cause a whole bunch of problems) valve. Mine is either in a land fill or being melted down to make something more USEFUL.

Sorry...just my .

 

[dc3coyote]

Thanks for learning the lesson for alot of us. I know that you have saved me from being broken down on the side of the road, with that one.

 

[SgtDave12]

Thanks, I learned something new. I appreciate it

 

[Ferroequinologist]

LOL. Your welcome Joe, glad it was something simple. Don't forget to post pics when you go get the trailer and open it.

 

[Trailboss]

Been there, done that.

I even pumped fuel from the full tank into the empty tank when I thought the dash switch was broke.

At least you know how low you can go in that tank, I'm afraid to drop below 1/2.