366014, back from COVID snooze...? Won't start yet

1941 - 1945, MB, GPW Technical questions and discussions, regarding anything related to the WWII jeep.
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Lee Bishop
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366014, back from COVID snooze...? Won't start yet

Post by Lee Bishop » Wed Jun 08, 2022 2:48 pm

I was horribly lax with my 44 MB, hadn't fired it up in way too long as all the shows and events were cancelled until this year.
My fuel pump was leaking the last time I'd fired it off, so I swapped it with a priming lever pump from Ron.
Screenshot_20220608-155234_Outlook-01.jpeg
I also replaced the in-line filter, checked all the fluids and tried to fire it up.
Note: the line was connected to the outlet when I tried to fire it up, I took this show before I had connected everything together!
The darned line between the carb and the pump was leaking at the pump, somehow the threads got a tiny bit buggered (I guess) somehow, so I ordered another line and it just showed up yesterday.
But the thing was, even with a minor leak, fuel was getting to the carb and it wouldn't start, even when I put fuel directly into the carb that should have started it.
I bought some carb cleaner and I'm gonna blast the inside with some of that when I replace that line (either tonight or tomorrow evening).
I hope to have it at the Olympia airshow on Father's Day weekend, just hope the carb might be just a little gummed up at the worst...
Owner, 1944 Willys MB #366014
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Re: 366014, back from COVID snooze...? Won't start yet

Post by dpcd67 » Wed Jun 08, 2022 2:58 pm

If you put gas directly into the carb it has to start. Or at least hit. Engines don't really need a carb to do that.
Hope you didn't use ethanol gas and leave it in for X months. It forms small jellyfish and you will need a carb rebuild. Or it's rust from the tank.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by David Hughes » Wed Jun 08, 2022 3:04 pm

I had the same issue with a JMP fuel pump.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by Lee Bishop » Wed Jun 08, 2022 4:14 pm

97802.jpeg
I used new ethanol free gas, strained through a brand new modern inline filter.
I just put the fuel line on the Jeep, blasted the carb with some carb cleaner, and will give it go at starting it up on the weekend or tomorrow night. It didn't seem to leak at all from the pump, certainly not through the threads as before.
I'll let the carb cleaner sit as I have errands now, will hit it again tomorrow and try to start it up then, after work.
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Former US Army Captain and REMF :mrgreen:

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Re: 366014, back from COVID snooze...? Won't start yet

Post by W. Winget » Wed Jun 08, 2022 5:11 pm

When I allow my 3/4T Dodge to sit for almost a year....
I pull fuel up to the carb with a hand vacuum tool on the carb fuel line, then spray carb cleaner into the fuel inlet (entering the fuel bowl) this helps to clean out the blue goo that the residue of Ethanol tends to leave sticking the fuel pump valves, carb needle valve and accelerator pump.
She then cranks just a few times with full choke and accelerator held down and fires right up.

If my GPW sits a month, the fuel bowl is empty and it takes some excessive cranking to finally get fuel up into the bowl, but not enough to kill the battery.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by 1944gp » Wed Jun 08, 2022 5:12 pm

Has it got spark?

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Re: 366014, back from COVID snooze...? Won't start yet

Post by Lee Bishop » Wed Jun 08, 2022 5:17 pm

1944gp wrote:
Wed Jun 08, 2022 5:12 pm
Has it got spark?
I don't know as I have nothing to test it with. The battery is brand new so I assume it is.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by dinof » Wed Jun 08, 2022 7:12 pm

I see so much of this same scenario of jeeps not being started
on a regular basis. Sure saves a ton of aggravation if you start
them once a week or even once every 2 weeks.
Last edited by dinof on Thu Jun 09, 2022 5:20 am, edited 1 time in total.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by dpcd67 » Wed Jun 08, 2022 8:09 pm

Right you are Dino, but I am so busy that I don't get to some of my vehicles even once a year.
Case in point; TODAY!
Getting my WM300 Power Wagon ready to go to the Vintage Power Wagons Rally on Friday in Fairfield IA. . I ran it last in 2019; then covid hit and they didn't have a really for the past 2 years.
Charged the battery; drained old gas out of it, and started it with starting fluid. I always use starting fluid to save wear on the battery and starter. Started right up, as expected, but would not stay running. Removed the carb this afternoon, and disassembled it; no gunk inside (I use non ethanol gas) but the float valve has a rubber tip (I though they were all all brass), and it was stuck. Cleaned it, Reassembled it, and started it again;
Runs like a new one now.
Now, for the OP, how do you know if you have spark? You remove one plug, lay it on the head, and watch it while cranking; you will know. Or use a jumper wire but that takes more hands. Or have your wife hold it; you will also know if it has spark. Of course, you will be divorced tomorrow if it does.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by slatgrille » Thu Jun 09, 2022 6:40 am

....or use insulated pliers to hold the plug against a head stud/bolt while SHE operates the ignition/starter.... 8)

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Re: 366014, back from COVID snooze...? Won't start yet

Post by Lee Bishop » Thu Jun 16, 2022 6:47 pm

Today, I decided to check the distributor, buffed the rotor and ran very light sandpaper across each side of the points once.
I hit the starter and she caught for just a moment, then died. Of course, the battery was quite low due to all the attempts to start it recently.
So, I just hooked up the charger to the battery and will make a serious attempt to start her up tomorrow.
She's still not running yet, but I'm much more hopeful than I was just a couple hours ago!
Owner, 1944 Willys MB #366014
Former US Army Captain and REMF :mrgreen:

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Re: 366014, back from COVID snooze...? Won't start yet

Post by dpcd67 » Thu Jun 16, 2022 7:21 pm

You can jump a 6 volt with a 12 volt vehicle; done it many times.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by Jim Thomason » Fri Jun 17, 2022 6:50 am

Getting off the subject of getting the jeep started but staying in the same scenario, I would like to share an experience. While jump starting a 6 volt vehicle with 12 volts, I left the jumper cables attached too long. Between the jump connection and the starter laboring hard the 6 volt battery got hot and started boiling off fluid. When I removed the jumper cables the spark ignited the the battery gasses. The explosion was loud and detrimental. I should have disconnected at the 12v battery a safe distance from the fumes. Jumping mixed voltages can be done safely, just keep your head in what you are doing. Jim

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Re: 366014, back from COVID snooze...? Won't start yet

Post by dpcd67 » Fri Jun 17, 2022 7:39 am

You violated jump starting Rule #1; always disconnect jumper cables from the Donor vehicle first.
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Re: 366014, back from COVID snooze...? Won't start yet

Post by Lee Bishop » Fri Jun 17, 2022 2:36 pm

dpcd67 wrote:
Thu Jun 16, 2022 7:21 pm
You can jump a 6 volt with a 12 volt vehicle; done it many times.
I wouldn't dream of trying it. I hooked the MBs battery to my 6V battery charger last night and it's just about at 100% now. It's raining all day, so I'm not going to try to start her up until it's drier out.
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Former US Army Captain and REMF :mrgreen:


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