hex0rz
+1y
Ah, boy! Well, I guess you will learn to not overlook things from now on, huh? Lol
I hooked up my choke wire to the + terminal on the ignition coil. Works good! Just don't let your key stay on the ON position when the truck is off! Or else you will end up with a warm choke and a cold engine! I don't have any clue how it would burn the choke up. My Weber tech. guy told me that it was okay. So I think he is a little crazy, lol! Its up to you...
If your choke is engaged when you try and tune it and its not fully open, your tuning will be off because the butterflies limit the air for a proper mixture.
Okay around the Electric choke, there are 3 screws that hold it in. Now, if you loosen all 3, you can turn the white piece clockwise to loosen the coil, or counter-clockwise to tighten it. And it sure sounds like you need to loosen it! What you want to do, is in the morning when its the coldest, before you start the engine, push the accelerator in and let go. This engages the choke. This puts the fast idle speed screw onto the fast idle cam.
Remove your air filter and then loosen the 3 screws for your choke. Turn the choke, (clockwise in your case) until it opens up. Then tighten it again until the clearance of your butterflies is 1/16th of an inch to the venturi. Which is the clearance betweem the top part of the butterflies to the side of the carb. This gives it a good start for choke setting.
Start your truck up, and warm it up to normal operating temp. When you have the truck warmed up, push the accel pedal and let go to blip the throttle to dis-engage the choke! One thing to do as the truck is warming up:
-The fast idle speed screw should be turned in as you are warming the truck up so that it is idling at about 1500 rpm. Don't worry the next time you start it up and its idling at 1200rpm or so as its warming up. The fast idle cam is a lobe and the rpm will increase as the butterflies open.
The funny thing is how our chokes do not dis-engage once it hits the top of the lobe. Our carbs are'nt made like that...
SO! You have your truck warmed up. After blipping the throttle to knock the speed screw off of the fast idle cam your truck should be at its normal idling rpm. 825 is the ideal rpm four our trucks. Once you have dis-engaged the choke, the butterflies should not be close anymore. It should be nearly straight up and down. Its okay if its 5 or so degrees more closed. If its closed more than say 15 degrees, you need to loosen the choke so the 'flies are open a little more.
Be careful when you go warm up the truck again. After not running the truck after 6-8 hours, the choke coil should be fully cool. If you engage the choke again and the chokes clearance is not about 1/16th of an inch of clearance you need to set it again. It takes some time to get the sweet spot in the tuning of the choke, and let alone the mixes, etc.!
Fact of the matter is, the choke makes it a rich condition for your truck to run in the morning when its cold. Although, what should happen, is that the warmer the weather is the more the choke should be open. So it will correlate with the weather and run time, etc.
If you like, you can remove the 3 screws on the choke, and take the face piece off. If you look, you will understand how the choke system works! It will also allow you to check and see if the rod for the 'flies is set in the coil right.
ALRIGHT! SO, now your truck is warmed up! The trucks fast idle speed has been set, the choke is adjusted! The butterflies are open all the way. NOW, it is time to adjust your mix screw FIRST! Its a good idea atleast to have the idle a little high. It will help you tune the truck better. Really, all you do is follow what weber told you. If the mix is more than 2 turns you need to change your IDLE jets! I say 1000rpm is good enough to tune the carb right in terms of mixture. You want to listen VERY intently to how the truck runs. It should'nt go over 2 turns max. For every turn out thereafter is a jet change of another size.
The mix adjustment is determined by the weather; hot or cold, altitude, and type of fuel used. I filled up on 87 octane this time at a cheap gasoline store! I think its the first time I noticed how cheap, cheap fuel is! I had to turn out my mix screw a total of 4 turns!!! It still knocked, but it was the smoothest it would run. I had to buy some heet from the store, which is essentialy rubbing alcohol. It absorbs water or any other cheap additives of the fuel and makes it burnable. Be advised if there is water in the tank, the truck simple will not run!
Although, if you end up in a situation like mine, tune to the best you can, buy some additive, and buy 89 octane from a premium store! I will have to readjust my mix once I re-fill.
So now your mix should adjusted right, now its simple to adjust your idle! Turn the screw in or out until you get to what you think is 825. It won't be exact but thats okay! Make sure that if you screw it out, your throttle linkage is fully resting on the screw!
I picked up the guide for the float adjustments today. Its pretty simple, but we should'nt need to adjust the float! I believe I've covered everything! Wow, alot to type... If you have more problems let me know!