| Author |
Message |
    
Derek Myers
New member
Username: cobracraft
Post Number: 1
Registered: 03-2009
| | Posted on Tuesday, March 31, 2009 - 09:12 am: | 
|
I have rebuilt a 4cyl 75hp 1932 gray. It will idle great but under load the engine wants to die. Has anyone experienced this problem and how did you fix it. |
Richard Clark
Member
Username: rich2479
Post Number: 6
Registered: 07-2007
| | Posted on Friday, May 15, 2009 - 10:02 pm: |
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The main metering jet is to lean, if you have 2 adjustment screws on top of the carb, one is the idle (small) the big one is the high speed metering jet. turn this one out (left) while under load until it smooths out. If that doesnt help, clean the carb. and blow out with an air nozzle. It could be something else, try this first. I am assumeing the choke is working and and the engine is warmed up before adjustments are made. Good luck rc |
Derek Myers
New member
Username: cobracraft
Post Number: 2
Registered: 03-2009
| | Posted on Monday, May 18, 2009 - 07:30 am: |
|
Thanks Rich! I will give this a try later this week and let you know how I make out. Your help is greatly appreciated. -Derek |
James E. Harris
Member
Username: engineguy68
Post Number: 16
Registered: 03-2009
| | Posted on Wednesday, May 27, 2009 - 10:35 pm: |
|
Just a little advice. Once you have achieved best power with the high speed jet, then turn it out (counterclockwise) about a 1/8 to 1/4 turn. You will lose a little power but you will be doing your valves a great kindness. |
