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carcrazyman1960
    
Why do I have to prime my engine to get it to start?
I bought a late 70's Chevy it has plenty of gas in the tank but in order to start it I have to either use starter fluid or prime it with gas directly in the carb.
Once the engine starts I have to keep the RPM's high so that it doesn't die. What could be the problem? Carburetor? Fuel pump? etc.



Thanks,
Joe
posted: November 22, 2008
 
    
 
  Answers (3)
 
nomadsrule
    
Joe,
You could have a couple of problems # 1 is the choke working on the carb? How long was the car sitting before you bought it?
# 2 What kind of Carb. is on the Chevelle?
posted:  November 22, 2008
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spudder
    
probably has the quadrajet carb on it! I once had a late model Olds (mid-70's) engine in a 69 Firebird, it had a quadrajet carb and I had similar issues, hard to start, although I didnt have to use starting fluid but she would crank and crank until finally, boom, she would start, also very cold-blooded.

First, I yanked off the carb, brought it to a guy I know who rebuilds carbs and he went through it, second, I found a small vacuum leak and repaired that, I never had another issue, she started right up, idled nice and was finally a joy to drive!
posted:  November 22, 2008
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nomadsrule
    
Joe,
I don't recall how many years the Q-Jet had bad castings ,and you would have to use epoxy at the bottom of the float bowl to keep the fuel from leaking into the intake,causing the very problem you are talking about.
I will also throw this in so someone doesn't get onto me about aswering this wrong,make sure your accelerator pump is in working order.
Make sure you check the fuel pump pressre as well.
posted:  November 24, 2008
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