Pump is good. It is activated by a oil pressure swish and that is not stuck close. The only thing i can think is tank pressure but who knows. I just squad from a shower of gas coming from a hot engine. It wont be the last time i guess.
Johnvee's 40 Thread
- Thread starter JohnVee
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Wow! Glad everyone is okay. Quite an exciting day!
Holy crap, so it actually was gas!
Darin is referring to the mechanical fuel pump, if John has one. The diaphragm can split and leak gas down into the crankcase. Is there a mechanical or electric fuel pump on the motor?
Darin is referring to the mechanical fuel pump, if John has one. The diaphragm can split and leak gas down into the crankcase. Is there a mechanical or electric fuel pump on the motor?
Darn. How else can gas get down there...
Only other way I can think of is if you have a broken ring that allows fuel from the combustion chamber down into the crankcase, but I'm not an expert on the sbc, so maybe there's some other way. Possibly fuel leaking from the carb down into the lifter Valley, then through there down to the crankcase?
Your carb doesn't have any vent on it that leads to the crankcase, does it? Maybe your running problem wasn't the carb after all, but was a broken ring. What do the plugs look like?
Only other way I can think of is if you have a broken ring that allows fuel from the combustion chamber down into the crankcase, but I'm not an expert on the sbc, so maybe there's some other way. Possibly fuel leaking from the carb down into the lifter Valley, then through there down to the crankcase?
Your carb doesn't have any vent on it that leads to the crankcase, does it? Maybe your running problem wasn't the carb after all, but was a broken ring. What do the plugs look like?
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- #86
Only connections on the carb are vacuum from the dizzy, PCV from DS valve cover and fuel inlet feed. PS valve cover has a hose that vents into the air filter housing.
Now that the floats should be adjusted right we'll see if gas continues to leak into the engine once I button it all back up. I might wire in a hidden fuel pump cut off switch for reassurance and theft-proofing, too.
I yanked the battery and loosened the gas cap before I came inside tonight so the gas should stay in the tank overnight (no power and no pressure).
Now that the floats should be adjusted right we'll see if gas continues to leak into the engine once I button it all back up. I might wire in a hidden fuel pump cut off switch for reassurance and theft-proofing, too.
I yanked the battery and loosened the gas cap before I came inside tonight so the gas should stay in the tank overnight (no power and no pressure).
With a major washdown like you had I would try to treat this engine as if you were wakening it from the dead to avoid bearing damage. Change the oil, pull the distributor and spin the shaft to build pressure. Pull the plugs, squirt some oil in each cylinder, hit the key and let it spin with no plugs for a few rotations and then re-install the plugs and fire it up. Let it run for a while and change the oil again. Doing all of this is a lot of extra work but it beats spinning a bearing. I hope you get the fuel issue resolved. The weather is getting nicer and that beast belongs on the road...um....or on the trail...either way!
If it has no fuel pump mounted to the side of the block then the only way it is getting in is thru the carb. How long did it take to get that much fuel in the oil please ? You really need to play close attention to the carb now that it has been rebuilt. I would also follow the instructions here above me. It will cost a bit but i would throw some cheap dino oil in it for the first few changes.
I have a brand new pump jon if u need it
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- #90
To update this… I most likely damaged the float on the old Holley when I reinstalled it. I had read about that and was also warned on the Holley DVD but we thought did everything right. Wrong. This allowed the float to stay open and let the carb overflow into the block. I admitted defeat and towed it to a shop I know with a bunch of old school mechanics where I had them ditch the Holley and instead rebuild and install the Quadrajet I got from Snowdogyyz.
They told me that it was smoking really badly when they were done and they hammered on the worst case scenario possibilities. Yesterday I picked it up and drove it 9 miles to my work and it did start to smoke when it hit 150* but not like it did in my driveway when we were messing with it. I put 50 miles of highway driving on it today and didn't see any signs of smoke when I pulled back into the driveway. The oil was clean and had a slight gasoline smell. I'll put some more miles on it tomorrow and try to burn off more of the gas/oil mix that's everywhere under the hood. I hope any gas that was still inside the engine has largely burned off now. I'll change the oil and filter again after another day or so of driving.
Thanks to everybody who came over to help and all those who have posted their thoughts here.
They told me that it was smoking really badly when they were done and they hammered on the worst case scenario possibilities. Yesterday I picked it up and drove it 9 miles to my work and it did start to smoke when it hit 150* but not like it did in my driveway when we were messing with it. I put 50 miles of highway driving on it today and didn't see any signs of smoke when I pulled back into the driveway. The oil was clean and had a slight gasoline smell. I'll put some more miles on it tomorrow and try to burn off more of the gas/oil mix that's everywhere under the hood. I hope any gas that was still inside the engine has largely burned off now. I'll change the oil and filter again after another day or so of driving.
Thanks to everybody who came over to help and all those who have posted their thoughts here.
It started to smoke when you hit 150 degrees? What color is the smoke? White? Grayish? Blueish? Blackish?
If you are seeing white smoke it could be carb or a head gasket/crack somewhere.
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- #92
Approximately 150 - 160 degrees, yes. I'm actually unsure of the color. Rafael and I had a disagreement last month about what color we were seeing in my driveway so my eyes might be getting too old. There was a good breeze the other day that was scattering the smoke pretty quickly - and it wasn't thick clouds this time.
My hope is that the smoke, which seems to have stopped now, was the residual gas in the block from the old leaking carb burring off. If that's possible. I'll see what happens today when I hit the road again.
My hope is that the smoke, which seems to have stopped now, was the residual gas in the block from the old leaking carb burring off. If that's possible. I'll see what happens today when I hit the road again.
I think we agreed that was gas rich smoke. It was not head gasket blown smoke. It is not telling, that thing was smoking from everywhere. But i think you approach is good. Let it burn off the engine and the gas in the exhaust and go from there.
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- #94
I've gone about 120 miles now. No more smoke or visible vapor under the hood. Time to change the oil, EXCEPT.... I'm stuck in a neighborhood waiting on a tow truck. No clutch pedal. Fluid all leaked inside the cab while driving. Time to overhaul the clutch, I guess. Been putting it off since 18 months ago when I found out it wasn't up to snuff. I actually always suspected that. At least I know what to do thanks to MUD (and Brain K who was the first to hear my tale of woe).
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John,
Is the whole clutch bad or just a bad master? Hopefully just the master! If so you'll have that knocked out in short order. I do agree though...when it comes to old stuff problems do tend to present themselves in waves. Hopefully you'll ride this one out quickly and get some good seat time while the weather is nice. Good luck!
...via IH8MUD app
Is the whole clutch bad or just a bad master? Hopefully just the master! If so you'll have that knocked out in short order. I do agree though...when it comes to old stuff problems do tend to present themselves in waves. Hopefully you'll ride this one out quickly and get some good seat time while the weather is nice. Good luck!
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- #97
Well… The master spit up all over the place, so it's toast. Master and slave are known to go in pairs so they'll both get some love. The actual clutch itself is probably due for a rebuild - the engagement is WAY high up in the travel.
Uh oh.
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- #100
Overdue for an update. I got the Master and Slave cylinders replaced along with the soft and hard lines. Thanks to Beno, Al and Eric, and Sam for the tools. Works great. Clutch still needs to be addressed since the engagement point is so high up in the travel. That works out because it looks like I've got a rear main seal leak. Pretty sure those can both be addressed at once.
I drove to Kernersville and back a few weeks ago and got 13.65mpg on the highway. Around town I've been getting approximately 11-11.5mpg. That's a nice upgrade over the old Holley carb. 1.0-1.5+ better all around. Not too far off of the 80's mpg now.
I'm waiting on parts to rebuild the parking brake right now.
Roadstr6 tacked some new wheel bolts on my tire carrier last week. Now I can hang my spare properly.
I took it out to URE in July and it did great. I was kind of concerned that I might have lost my 40 finesse (ha!) after only taking out the 80 for almost 18 months. I'm still trying to figure why I can crawl up Dickey Bell in the 40 but have to lock the 80. Yeah, I know...never mind. Looking forward to Logan's Run where I hope to have both trucks.
I drove to Kernersville and back a few weeks ago and got 13.65mpg on the highway. Around town I've been getting approximately 11-11.5mpg. That's a nice upgrade over the old Holley carb. 1.0-1.5+ better all around. Not too far off of the 80's mpg now.
I'm waiting on parts to rebuild the parking brake right now.
Roadstr6 tacked some new wheel bolts on my tire carrier last week. Now I can hang my spare properly.
I took it out to URE in July and it did great. I was kind of concerned that I might have lost my 40 finesse (ha!) after only taking out the 80 for almost 18 months. I'm still trying to figure why I can crawl up Dickey Bell in the 40 but have to lock the 80. Yeah, I know...never mind. Looking forward to Logan's Run where I hope to have both trucks.