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Took off the carb today to start my rebuild of it. No real reason, other than it's a new truck and I wanted to go through it thoroughly. Truck had been running great....1971 F100, 302 with OEM 2100 2bbl carb. Pulled off the EGR plate to find the port in the intake manifold below it flooded with fuel. When I pulled the carb off, I noticed it was dry (turned upside down and no fuel came out). Any ideas why this happened?
It's the carb spacer plate where an EGR valve on an EGR equipped truck normally mounts to. Wasn't sure what it's called?
Yes, I know what it is (EGR/Carb Spacer Plate), but it was not on your 1971 originally. So either the engine was swapped or possibly just the intake manifold.
EGR valves were introduced in 1973 on Passenger Cars, F100/350's, Bronco's and Econolines.
So the photo I posted above of the carb spacer with vacuum nipple is not original to my truck?? There is no EGR valve, nor any EGR provision attached to the spacer above. It's just a spacer with a full manifold vacuum used for PCV function.
Took off the carb today to start my rebuild of it. No real reason, other than it's a new truck and I wanted to go through it thoroughly. Truck had been running great....1971 F100, 302 with OEM 2100 2bbl carb.
Pulled off the EGR plate to find the port in the intake manifold below it flooded with fuel.
Didn't realize this was gonna turn into a pissing contest of semantics and Ford parts catalog nomenclature. Whether you call it an EGR plate or a carb spacer it's really irrelevant to the problem at hand. 🙄
Didn't realize this was gonna turn into a pissing contest of semantics and Ford parts catalog nomenclature. Whether you call it an EGR plate or a carb spacer it's really irrelevant to the problem at hand. ��
If you don't use correct FoMoCo terminology when describing parts, you will get the wrong parts.
Calling a carb spacer an EGR spacer is not only wrong but confusing, especially since your truck is a 1971.
How could that confuse you with the original question? Whether an EGR plate or a carb spacer is present, it has absolutely zero bearing on the question at hand (a flooding autolite 2100 carb). You simply wanted to flex and call someone out on their terminology versus helping with the problem at hand. Yes, I called it an EGR plate. It is technically a carb spacer. You win. All bow before the all knowing Bill! Can we move on now???
Moving on; 1. How long ago was the truck running? 2. Are you sure that the fluid was gas and not oil, or a combo of oil and water (from condensation)?
The truck was running about a 2 weeks ago. It had been parked it in my garage ever since and I took off the carb yesterday. I smelled it and it's definitely raw gas. I'm going to tear the carb apart here in a few and see if there's anything obvious that sticks out.
Just an update..... I disassembled the carb today and all looked pretty good visually. Float height was correct at 7/16", float valve wasn't sticking, and float had no pinholes. Nothing visually looked out of whack. I went ahead and threw in the full rebuild kit. Runs great, just like it did before.
Apparently it must have been leaking through the power valve (sorry...."economizer valve" ). Either from the valve's gasket being faulty or either from it having a faulty diagram. From all the reading I have done, an internal leak through a 2100/2150 carb down into the intake manifold would almost have to come from this circuit, nonwithstanding one's carb having a cracked fuel bowl. I wish I would have paid attention more during disassembly, because a telltale sign of a faulty power valve is the presence of fuel behind the power valve cover once it is removed.
to find the port in the intake manifold below it flooded with fuel.
). Either from the valve's gasket being faulty or either from it having a faulty diagram. From all the reading I have done, an internal leak through a 2100/2150 carb down into the intake manifold would almost have to come from this circuit, nonwithstanding one's carb having a cracked fuel bowl. I wish I would have paid attention more during disassembly, because a telltale sign of a faulty power valve is the presence of fuel behind the power valve cover once it is removed.