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carb flooding

FM Former Member
New problem.
I have always smelled fuel when driving(only 100 miles since I got car). Seemed to load up on deceleration. Driving home at around 70 mph, had just backed off a little then stepped on gas. Sounded like I blew out exhaust gasket and running on 3 cylinders at most. Limped home and shut off. Restarted and same running condition. Pulled air cleaners and looked in. Pass. side 44IDF front butterfly had about 1/8 in. of fuel sitting on top. I flicked throttle to clear gas and noticed a steady stream of fuel coming out just above the butterfly. It just kept coming. I disconnected fuel line and there was still a lot of pressure(mech. fuel pump). Pulled plugs on Pass. side. The front plug was a little dark and the rear plug was really carboned up. Since the fuel was in front butterfly, I would have thought that the front plug would be fouled.

Now the question. What do I do? I have the Weber book, but could not figure it out.
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FM Former Member
New problem.
I have always smelled fuel when driving(only 100 miles since I got car). Seemed to load up on deceleration. Driving home at around 70 mph, had just backed off a little then stepped on gas. Sounded like I blew out exhaust gasket and running on 3 cylinders at most. Limped home and shut off. Restarted and same running condition. Pulled air cleaners and looked in. Pass. side 44IDF front butterfly had about 1/8 in. of fuel sitting on top. I flicked throttle to clear gas and noticed a steady stream of fuel coming out just above the butterfly. It just kept coming. I disconnected fuel line and there was still a lot of pressure(mech. fuel pump). Pulled plugs on Pass. side. The front plug was a little dark and the rear plug was really carboned up. Since the fuel was in front butterfly, I would have thought that the front plug would be fouled.

Now the question. What do I do? I have the Weber book, but could not figure it out.
LeonChuppLeonChupp
Mike......find the trouble shooting section in the Weber manual.......Read ALL the entries several times to become acquainted with it......and remember that most of the time, you are using the idle jets to meter most of the fuel, unless you are above 3200-3500rpm....Then the main jets take over........Most of the time this problem is the result of a clogged idle jet......

You can try to remove the idle jets and clean/blow them out, just use the wire in a bread wrapper tie.(remove the plastic/paper)......I have better luck removing the jet stacks, idle jets, and idle mixture screws, then blowing out all the passage ways with compressed air.......

If you find debris of a significant size, pull the air cleaner bases, and clear the tops of the carbs of any accumulated dirt......Check the rubber sealing surfaces on your air cleaners, and remove any "flash" left over from the forming process.....

Hope this helps....
FM Former Member
Leon,
Thanks for info. I followed your suggestions and cleaned out the jets with air. I could not detect any dirt. Started car and still running on 3 cyl. But no gas flowing after car shut off. That problem seems to be solved.

Started car and removed filter lid and found blowback on front pass stack. Pulled valve cover and found front exhaust valve off of push rod. The rocker assembly looks easy to pull off with only two bolts. I will then see if push rod is bent or what. Will post a note when fixed.

Thanks again for help.
FM Former Member
Just pulled rocker ass. push rod does not look bent. The rocker is shot. The cup that holds the ball on end of adjuster broke off letting push rod drop. The end of rocker that push rod goes is eaten up. I called CB perf. and they are trying to figure out what rocker I need. Has anyone else had this problem and thoughts on why it happened?
Thanks
Mike
FM Former Member
Leon,
Valve train back together and rockers set properly. All 4 are firing. Took test run and seems to be loading up real bad on deceleraion and backfiring.
I am in process of cleaning idle jet. I assume the o ring is in front of jet holder as it is not on holder or at face of hole. How do you get o ring and idle jet out to clean? There is no slot for screw driver.
Your help is appreciated.
Mike Richardson
LeonChuppLeonChupp
Mike........Check the exploded view of the Weber IDF 44......When you remove an idle jet, you are actually removing a jet/holder assembly.....The jet itself is a push fit into the holder.....When you remove the holder, you should find an "O" ring either on the holder or left in the hole.....DO NOT OMIT THIS when re assembling the jet/holder and carb.....Reread the manual.......5 or 10 times.....Study the exploded view of the carb, and things will become much clearer......reread the trouble shooting section also......Good luck....

The jet holder does have a screwdriver slot.......
FM Former Member
Leon,
Thanks for putting up with me. I must be seeing something wrong or there are no idle jets.
I am looking at exploded view in Tomlinsons tech manual as I write this. I took out #34 Idle jet holder. It has a space between top of threads and head that would accomidate an o ring. None there. Next I loodoked inside hole with flashlight and could not see anything. So I put a long plastic lube in hole very slowly and it went in about two inches. I do not think that #33 O ring or #32 Idle jet are there. All jets that I am familiar with have a screw head that you turn counter cloclwise to screw out. Am I going crazy or what?
Thanks
Mike
FM Former Member
hi... my observations... the smell of gas can be from the carbs... one possibility floats sticking in a low position allowing the needle valve to remain open and flooding the carb... you will smell the raw gas and will make the car run bad at idle to mid range RPM...

If the rubber on the needle valve not sealing gas will continue flowing into the carburetor when no gas is needed.

A sign of these defects are
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