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| | | | Joined: Sep 2009 Posts: 27 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2009 Posts: 27 | I totally cleaned the fuel system and installed a new carb kit. The motor starts right up and idles nicely. I hear a popping/backfiring noise in third and fourth gear. If I am going down a hill it doesn't pop, but accelerating in the upper gears at any time makes it start popping. I also checked the distributor for bad points. Any suggestions or tips would be very appreciated. | | | | | Joined: Jan 2009 Posts: 1,644 Shop Shark | | Shop Shark Joined: Jan 2009 Posts: 1,644 | Check timming, should be on the ball at an idle.
If you have a gas filter,in line, check that, sounds like it could be running lean under load .Cloged filters do that.
What carb are you running?
Pete | | | | | Joined: Aug 2005 Posts: 6,377 Ex Hall Monitor | | Ex Hall Monitor Joined: Aug 2005 Posts: 6,377 | A good general tune up is the place to start. Every good tune up starts with setting valve lash hot.
Save a life, adopt a senior shelter pet.
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Name your dog Naked so you can walk Naked in the park.
| | | | | Joined: Sep 2009 Posts: 27 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2009 Posts: 27 | An old friend helped me check the valves when I first brought the truck home. I'll check them again. I'll get a new fuel filter,too. The fuel pump is just the basic one that O'Reilly's sells. Is there a better quality one out there? | | | | | Joined: Oct 2004 Posts: 1,780 Master Gabster | | Master Gabster Joined: Oct 2004 Posts: 1,780 | What the others said and check for vacuum leaks too. Tighten dow the carburetor and check all vacuum hoses, including the one to the wipers. Check to make sure that your float is set correctly. | | | | | Joined: Sep 2009 Posts: 27 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2009 Posts: 27 | I do have vacuum wipers. My list of things to check is growing! thanks to everyone for the tips | | | | | Joined: Sep 2009 Posts: 27 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2009 Posts: 27 | According to the owners manual, the carb is the one barrel model "B". It is in good shape.
By the way, were you in Riverside, Mo this summer at the truck show? I think I saw your truck. Sweet! | | | | | Joined: Sep 2009 Posts: 27 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2009 Posts: 27 | Well, since I posted last I changed the wiper motor to 12 volt.
I also discovered that I had the firing order wrong. My wife found some used Michelin's at a local swap meet.
I've been driving it to work once a week, usually on Friday.
One thing I need advice on is that I have to dribble a little gas in the carb before it'll start. Every now and then I have noticed gas leaking from where the fuel line screws in the carb. Is the fuel leaking out or evaperating between rides? | | | | | Joined: Mar 2005 Posts: 1,636 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,636 | Do you pull the choke when it's cold? Also when it's not running< look down the throat of the carburetor and move the throttle shaft. If the accelerator pump is working it should squirt a little gas down the throat. If it isn't doing that, then you need to rebuild the carb.
Okay. read where you rebuilt the carb. Did you get the check valve ( bb) in the right place for the accelerator pump to work? Does it work?
Last edited by Roy Rodgers; 07/20/2011 3:28 AM. Reason: Re read the post.
| | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | It could be the cover leaking. If its a '50 it would be the first design B and they are prone to leaking. You may want to recheck the float level if the other things mentioned above don't help. | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | If you are indeed leaking from where it screws into the car, you might want to lossen the line and try putting the fitting a little further in. If it still leaks then you will need some type of sealant on the threads.
These sixes like a lot of choke to start. If you driving it only once a week there is a possibility that the gas is evaporating out of the carb. Personally I don't have a problem after a week. | | |
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