NEED HELP HARD START
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Freshman User
Joined: Jul 2009
Posts: 40
Likes: 0
From: Las Vegas NM
NEED HELP HARD START
Help I jnstalled 73 300 6 in my 49 f2. I must pump gas 20 times before it starts rebuilt carb because of hard start and dumps gas at times when shut down no change choke seams to work fine closes when pedal depressed. any ideas? Also dies when when going up hills
Junior User
Joined: Aug 2008
Posts: 52
Likes: 0
have you checked the fuel pump, it may be leaking backward into the line, so when you try to start it you have to pump the gas back from the tank, also when you go uphill it would be harder to pull the gas from the tank because of gravity, did the carb work right before or is it new to you, it might be easier to get a remanned carb
Posting Guru
Joined: Nov 2008
Posts: 1,647
Likes: 3
From: Halifx Pa
Is the float adjusted correctly? There is no need to pump the gas 20 times, one, or two should be enough if the carb rebuild was done. Did you check timing, and did you use a vacuum guage, adjust air/fuel mixture, idle all at the same time, it should run good for you. any vacuum leaks??
How old is the fuel pump, I had one a few months back give me a fit, as it drained back, and it would not start unless you geve it a shot of starting fluid. It would fire up and pump fuel to the carb, then it would run.
Replaced the fuel pump, and fine tuned it, now pump the gas one time, and it fires right off. When it is warm, just tap the key, and it is running!!
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
If you're pumping the gas 20 times to get it to start, you're making the problem worse. If you pump the pedal more than once or twice, it's enough to flood the engine. It sounds to me like a float adjustment problem. This would explain why it dies going uphill.
