The vacuum diaphragm for the vacuum pull-off brake has an important function that effects cold-start and warm-up drivability. Be certain the lip faces downward as it enters the bore of the main body. Do not lose small parts! I've found some damaged parts and I'm not sure where to find replacements. Hook the pump link into position. I do not recommend novices messing with main jetting. Solution: If idle screw fails to richen, Raise the float level, this seems to richen the mixture for the tired motor.
Local shops, while usually knowing what they are selling, also tend to cost more than online suppliers. Spray starting fluid around the base of the carburetor and intake manifold. All the standard stuff swapped out, all the vacuum lines replaced. Mostly, a terrible running engine. Correct power valve and accelerator pump settings have a large impact on performance.
If the cap is not pressurized and sealing properly, there can be a fuel supply problem. This prevents the throttle from slapping shut, which can cause venturi effect fuel enrichment or backfiring. In this jet's case, sounds best to leave well enough alone if you can, you may not be able to find a replacement jet readily. That's how large of a diameter the rod is at those points where it comes and goes in the hole of the jet. Your instincts were right: Not always.
Now see how it appears to the plunger on the accelerator pump? With the vacuum off, check the choke valve position by opening the throttle to allow the valve to close. Within the carburetor are two floats designed to ensure that the carburetor has a ready-supply of fuel to prevent hesitation. Please or call 888-664-6462 toll free if you have any questions. This was well worth the cost of a carburetor kit! It can be fixed if yours has been damaged, or if in your gusto you damage it. I am trying to figure out how to use one a secondary carb now. Make sure this valve functions properly! It was founded by William Carter, who started experimenting with automotive carburetors while running a successful bicycle shop.
This rubber grommet must seal properly when the lever closes. That little bracket looks very similar in its shape to the top part of the accelerator pump link. Is that the shaft in the throttle body? You do need to make sure all of these components function properly, though, and that the fuel, vacuum and spark systems interact as designed. The instructions are not super, but if you pay attention when you take it apart, they go back together the same way. As copyrighted material, this article and the photography cannot be copied or distributed in any other form. It still sounds like an accelerator pump issue. Note—I have learned to use disposable mechanics gloves.
Just enough to catch three steps on the metering rod: the fat, upper part economy mode , the middle step mid range - and that is usually a taper on the metering rod , and finally the lower skinny part power mode. ? The last mid-sized hole on the top machined surface is a passageway for the idle and lo-speed circuit. Same with the metering rods, the correct diameters are in the parts list, as shown above. This allows for proper movement and correct timing as the vent closes and opens. Start the engine and adjust the air bleed screws until the engine runs smoothly. Maybe we'll get Lil' Willy some greater pep. Be sure the distributor advance mechanisms function properly.
Hard parts and some emission control parts are available through Carter and Mopar outlets. It will help you identify the parts and even details like the number of check balls that need to go into place. Top left area of the photo. Make sure the coil spring is inside the vacuum piston before setting the piston in its bore! We have premium kits for many models which feature hard-to-find parts like idle mixture screws, pump return springs and check valves. But look at the metering rod and that little bracket on the bench, the assembly that includes the little metering rod spring.
On the head of your good jet, you might see the number stamped into the jet. I came in the back door. I cleaned the motor housing carefully with Coleman stove gas, avoiding the electrical connectors. Brass buggers easy and looks are important too! Be sure the fast idle adjusting screw is on the high step of the cam when making this adjustment. The distributor and spark wiring is familiar and easy to service. Hold a straightedge across the top of the dust cover boss at the pump arm.