All,
Just rebuilt my carb on the mite, and its running great. Only one issue...When going up inclines, its tending to sputter till it gets back on level ground.
Whats causing this, and how can i fix it?
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Holly 1904F Carb help
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Holly 1904F Carb help
by Gunny1 » Mon Jan 02, 2012 1:32 pm
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
Re: Holly 1904F Carb help
by BigBlock » Mon Jan 02, 2012 2:40 pm
Could be lot's of things...
Is this a new issue since you rebuilt the carb?
First guess is the carb float level.
Could also be a weak fuel pump. Going uphill makes the pump work harder to pull the fuel from the tank.
A plugged or leaking vent line could also cause sputtering. There are quite a few to check on the mite...
Also make sure the fuel cap is in the normal vent position, not sealed on the second stop.
Can you tell for sure that it is the incline that is causing the problem, and not the extra engine load? If it is sputtering because of the load, it might also be ignition related. (Check points, timing)
Is this a new issue since you rebuilt the carb?
First guess is the carb float level.
Could also be a weak fuel pump. Going uphill makes the pump work harder to pull the fuel from the tank.
A plugged or leaking vent line could also cause sputtering. There are quite a few to check on the mite...
Also make sure the fuel cap is in the normal vent position, not sealed on the second stop.
Can you tell for sure that it is the incline that is causing the problem, and not the extra engine load? If it is sputtering because of the load, it might also be ignition related. (Check points, timing)
Steve B.
(7 of the 10 voices in my head are screaming "Floor It!")
M422 #182, #1265
M422A1 #1673, #1788, #1843, #1846, #1957, #2260, #2883, #3284, #3743
(7 of the 10 voices in my head are screaming "Floor It!")
M422 #182, #1265
M422A1 #1673, #1788, #1843, #1846, #1957, #2260, #2883, #3284, #3743
- BigBlock
- G-Master Sergeant
- Posts: 106
- Joined: Thu Jul 14, 2011 4:25 pm
- Location: Houston, Texas
Re: Holly 1904F Carb help
by Bill H. » Mon Jan 02, 2012 3:13 pm
Float 
Bill H.
Welfare, a modern day career choice.
A gun is like a parachute, if you ever need one and don't have one, you'll never need one again
1962 AMC M422A1
1965 Stevens M416B1
My 1944 Willys MB
1944 Willys MB
Welfare, a modern day career choice.
A gun is like a parachute, if you ever need one and don't have one, you'll never need one again
1962 AMC M422A1
1965 Stevens M416B1
My 1944 Willys MB
1944 Willys MB
-
Bill H. - G-Lieutenant General
- Posts: 3823
- Joined: Sun May 31, 1998 9:00 pm
- Location: California City, CA USA
Re: Holly 1904F Carb help
by Gunny1 » Mon Jan 02, 2012 4:30 pm
Big block,
I can say that it was not doing this before the change. The fuel pump is recently lnstalled NOS. I will check vent lines, but if it is the float, im guessing the arm would have to be bent slightly either up or down within the bowl?
I can say that it was not doing this before the change. The fuel pump is recently lnstalled NOS. I will check vent lines, but if it is the float, im guessing the arm would have to be bent slightly either up or down within the bowl?
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
Re: Holly 1904F Carb help
by BigBlock » Mon Jan 02, 2012 4:54 pm
Correct.
The easiest way is to flip the carb over, with the bowl off. Bend the little tab on the float where it sits on the needle. The float should be level when upside down. (That is the position that closes the needle and stops the fuel flow.)
With the carb upside down:
If the float drops past level, toward the top of the carb, then the fuel level will be too high. That will cause flooding.
If the float sits "high" on the needle, then the fuel level will be too low when installed. Low fuel level can cause stumbling or hesitation on hills.
If you don't want to pull the carb to flip it over, you can pull the bowl, and gently lift the float until it closes the needle valve. The top of the float should be level.
High or low float level can cause sputtering. If you want to send a picture, I might be able to help more.
The easiest way is to flip the carb over, with the bowl off. Bend the little tab on the float where it sits on the needle. The float should be level when upside down. (That is the position that closes the needle and stops the fuel flow.)
With the carb upside down:
If the float drops past level, toward the top of the carb, then the fuel level will be too high. That will cause flooding.
If the float sits "high" on the needle, then the fuel level will be too low when installed. Low fuel level can cause stumbling or hesitation on hills.
If you don't want to pull the carb to flip it over, you can pull the bowl, and gently lift the float until it closes the needle valve. The top of the float should be level.
High or low float level can cause sputtering. If you want to send a picture, I might be able to help more.
Gunny1 wrote:Big block,
I can say that it was not doing this before the change. The fuel pump is recently lnstalled NOS. I will check vent lines, but if it is the float, im guessing the arm would have to be bent slightly either up or down within the bowl?
Steve B.
(7 of the 10 voices in my head are screaming "Floor It!")
M422 #182, #1265
M422A1 #1673, #1788, #1843, #1846, #1957, #2260, #2883, #3284, #3743
(7 of the 10 voices in my head are screaming "Floor It!")
M422 #182, #1265
M422A1 #1673, #1788, #1843, #1846, #1957, #2260, #2883, #3284, #3743
- BigBlock
- G-Master Sergeant
- Posts: 106
- Joined: Thu Jul 14, 2011 4:25 pm
- Location: Houston, Texas
Re: Holly 1904F Carb help
by Gunny1 » Mon Jan 02, 2012 5:15 pm
Steve,
Thanks for the wisdom. Will work on doing what you said.
Thanks for the wisdom. Will work on doing what you said.
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
Re: Holly 1904F Carb help
by Gunny1 » Mon Jan 02, 2012 5:24 pm
All,
this is my baby, will work on getting more pics on.
this is my baby, will work on getting more pics on.
- Attachments
-
- 010212191953.jpg (252.62 KiB) Viewed 575 times
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
Re: Holly 1904F Carb help
by Gunny1 » Mon Jan 02, 2012 5:26 pm
All,
Sorry, tring to do this from a new phone and have not figured it out yet.
Sorry, tring to do this from a new phone and have not figured it out yet.
- Attachments
-
- 010212191953.jpg (252.62 KiB) Viewed 575 times
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
Re: Holly 1904F Carb help
by rob walsh » Mon Jan 02, 2012 9:47 pm
Nice Looking Mite Don!
Thanks for the Pix.....
Rgds,
Rob in Boise
Thanks for the Pix.....
Rgds,
Rob in Boise
- rob walsh
- G-Staff Sergeant
- Posts: 61
- Joined: Mon Jan 03, 2005 8:40 pm
Re: Holly 1904F Carb help
by acmack » Tue Jan 03, 2012 9:00 am
Beautiful Mite!
What does the CIG mean under the blue diamond? I have the same thing in the same place on my shorty. I'm guessing it's center of gravity point.
David
What does the CIG mean under the blue diamond? I have the same thing in the same place on my shorty. I'm guessing it's center of gravity point.
David
Any other spacecraft or missile owners out there?
MAR 43' GPA 9545 MAR 43' GPA 10568 getting there!
AUG 42' GTB (pre-A/first contract) Army cargo 137629
42' Sterling HCS330 #663
60' M422 538
65' Apollo BP CM A28
60' Gemini BP CM MSC312
MAR 43' GPA 9545 MAR 43' GPA 10568 getting there!
AUG 42' GTB (pre-A/first contract) Army cargo 137629
42' Sterling HCS330 #663
60' M422 538
65' Apollo BP CM A28
60' Gemini BP CM MSC312
-
acmack - G-Colonel
- Posts: 1836
- Joined: Wed Sep 21, 2005 5:11 pm
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Re: Holly 1904F Carb help
by Gunny1 » Tue Jan 03, 2012 9:37 am
David,
You are correct, it is the Center of Gravity.
You are correct, it is the Center of Gravity.
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
Re: Holly 1904F Carb help
by acmack » Tue Jan 03, 2012 1:51 pm
BTW I noticed you didn't put any TAC numbers on your blue (? Fifth Marines) diamond. Are the company, regiment ect. numbers sometimes not applied?
David
David
Any other spacecraft or missile owners out there?
MAR 43' GPA 9545 MAR 43' GPA 10568 getting there!
AUG 42' GTB (pre-A/first contract) Army cargo 137629
42' Sterling HCS330 #663
60' M422 538
65' Apollo BP CM A28
60' Gemini BP CM MSC312
MAR 43' GPA 9545 MAR 43' GPA 10568 getting there!
AUG 42' GTB (pre-A/first contract) Army cargo 137629
42' Sterling HCS330 #663
60' M422 538
65' Apollo BP CM A28
60' Gemini BP CM MSC312
-
acmack - G-Colonel
- Posts: 1836
- Joined: Wed Sep 21, 2005 5:11 pm
- Location: Holden Massachusetts USA
Re: Holly 1904F Carb help
by Gunny1 » Tue Jan 03, 2012 2:51 pm
David,
Good eyes! I just havent got there yet.
I got the top for Christmas and have been really excited about that, and need to get back to the TAC markings.
Good eyes! I just havent got there yet.
I got the top for Christmas and have been really excited about that, and need to get back to the TAC markings.
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
Re: Holly 1904F Carb help
by Bill H. » Wed Jan 04, 2012 6:58 pm
Holy cow! Don, your Mite is a work of art! Beautiful! I'm jealous :-/ 
Bill H.
Welfare, a modern day career choice.
A gun is like a parachute, if you ever need one and don't have one, you'll never need one again
1962 AMC M422A1
1965 Stevens M416B1
My 1944 Willys MB
1944 Willys MB
Welfare, a modern day career choice.
A gun is like a parachute, if you ever need one and don't have one, you'll never need one again
1962 AMC M422A1
1965 Stevens M416B1
My 1944 Willys MB
1944 Willys MB
-
Bill H. - G-Lieutenant General
- Posts: 3823
- Joined: Sun May 31, 1998 9:00 pm
- Location: California City, CA USA
Re: Holly 1904F Carb help
by Gunny1 » Thu Jan 05, 2012 2:58 pm
Thank you Bill, I appriciate it, but I cant take most of the credit for it.
Hopefully I can get on to the rest of my M416 conversion. I can't wait to drive the combo around.
Hopefully I can get on to the rest of my M416 conversion. I can't wait to drive the combo around.
Don L.
M422A1 SN# 1711
M416B1 (almost)
1951 M38
M422A1 SN# 1711
M416B1 (almost)
1951 M38
- Gunny1
- G-Sergeant
- Posts: 42
- Joined: Tue Aug 30, 2011 5:31 pm
- Location: Calhoun, Georgia
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