Lack of power on hills
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- G-Private
- Posts: 4
- Joined: Wed Mar 15, 2023 11:15 am
- Location: Swansea
Lack of power on hills
My cj3a seems to pull ok on the fllat, 40 mph with no issue, but loses power as soon as I hit an incline, struggles to stay above 20 mph, is this normal, if not what could be the issue, its got a new carb, new plugs, idles and runs great until the dreaded hill
- Rebel Walker
- G-Sergeant First Class
- Posts: 92
- Joined: Sun Jan 01, 2023 8:47 pm
- Location: Brisbane Qld
Re: Lack of power on hills
First check the distributor cam dwell 42* or point gap 0.020" has not closed up.
- Scoutpilot
- G-Lieutenant General
- Posts: 7329
- Joined: Sun May 28, 2006 1:22 pm
- Location: Asheboro, NC
Re: Lack of power on hills
You say it runs "great". What is your timing set at? Fuel? Ethanol or not? What is the Octane rating? Did you perform a tuneup, or just replace parts? Tire pressure? Are brakes set properly?
'70-'71 'A' Batt., 377th FA, 101AB
(Slicks and LOH's)(Col's LOH Pilot)
'71-72 CHARLIE TROOP,
16TH AIR CAV, 1ST AVN BDE (AEROSCOUTS)
LOW LEVEL HELL.
'46 CJ2A
'47 CJ2A
'48 CJ2A
'48 B1PW126
'69 CJ5
(Slicks and LOH's)(Col's LOH Pilot)
'71-72 CHARLIE TROOP,
16TH AIR CAV, 1ST AVN BDE (AEROSCOUTS)
LOW LEVEL HELL.
'46 CJ2A
'47 CJ2A
'48 CJ2A
'48 B1PW126
'69 CJ5
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- G-Private
- Posts: 4
- Joined: Wed Mar 15, 2023 11:15 am
- Location: Swansea
Re: Lack of power on hills
Thanks, I will check all these things out
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- G-Lieutenant General
- Posts: 6875
- Joined: Sat Jan 12, 2008 5:25 am
- Location: Tipton,In.
Re: Lack of power on hills
Is the carb. linkage adjusted so with the gas pedal on the floor, is the carb. at full throttle or only partly open ?
Mike Wolford
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB
CJ-2A
VEP GPW
Comm./Inst. SEL
AOPA ( 50 yrs)
EAA ( 49 yrs)
4th Inf. Div. - 5th Inf. Div. - 2nd Armor Div. - CIB
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- G-Colonel
- Posts: 1684
- Joined: Thu Mar 13, 2003 4:45 pm
- Location: Northeast Colorado
Re: Lack of power on hills
What kind of air cleaner are you running? If stock, has it been serviced lately? Are the oil level and dirt level correct? The cute little paper “hot rod” filters can be terribly restrictive.
BW
BW
G Trp 2nd Sqdrn 3d Armored Cavalry Ft. Lewis 1970-71. 43GPW(Sarge?) 47CJ2A(Teddy) 47CJ2A(Rusty) 47CJ2A(Zak) 48CJ2A(Lefty) 48CJ2A(Uncle Linden) 53CJ3B(Bulldog) 88XJ(Pluto) NE CO
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- G-Private
- Posts: 4
- Joined: Wed Mar 15, 2023 11:15 am
- Location: Swansea
Re: Lack of power on hills
Running oil bath cleaner, all serviced recently, will check everything again
- Rebel Walker
- G-Sergeant First Class
- Posts: 92
- Joined: Sun Jan 01, 2023 8:47 pm
- Location: Brisbane Qld
Re: Lack of power on hills
Follow on from Bruce's comment - too much oil or too heavy grade in oil bath air cleaner will do it. What did you find with points?
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