Starting issues

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bobcat1/178th
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Starting issues

Unread post by bobcat1/178th » December 25th, 2021, 4:37 pm

Have a 66 M151a1 with electric military fuel pump and electric ignition.....Lately it takes at least 10-15 sec of cranking with almost full choke to start..Weather is warm....When it starts it runs rough and has to be on half choke to run....However once its ran for awhile it starts up qwik with little choke needed....Ideas?

bobcat1/178th
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Re: Starting issues

Unread post by bobcat1/178th » December 25th, 2021, 6:58 pm

found previous posted info....will check those and get back if not fixed

Mark
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Re: Starting issues

Unread post by Mark » December 25th, 2021, 7:21 pm

Could be float level, fuel pump, carburetor......aw, I better keep quiet as my carburetor is a holley so has some different features in it.
Last edited by Mark on December 25th, 2021, 8:55 pm, edited 1 time in total.
mark


1968 m274A5
1960 m151
1981 m151A2
1964 m416
1971 m416

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rickf
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Re: Starting issues

Unread post by rickf » December 25th, 2021, 7:28 pm

Ummm. Sounds normal for a carbureted vehicle? If it is rougher than it was in the past then I would suspect old gas has gummed up the carburetor. You say "Almost full choke" is needed to start. Usually you will need full choke since there is no accelerator pump until after you are running to get gas into the manifold.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
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Hambone
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Re: Starting issues

Unread post by Hambone » December 25th, 2021, 11:25 pm

Pull the breather hose and make sure you choke is fully closing.

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m3a1
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Re: Starting issues

Unread post by m3a1 » December 26th, 2021, 11:56 am

I wonder if he has the breather hose on there at all. If he doesn't, that would explain a lot.

You might try this. Put some leftover icing (from the gingerbread house competition) in your coffee in the morning. That big ol' lump of powdered sugar will help get anything started.

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TJ
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bobcat1/178th
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Re: Starting issues

Unread post by bobcat1/178th » December 31st, 2021, 6:10 pm

Thanks again for all the info.... Ill give it a good going through.....

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