I have a 1972 FJ40 with the 2F engine in it (desmogged). Still has the original 3-speed tranny, and when I pull hills and come off of a complete stop, it tries to fall on its face. The gas fumes are almost enough to knock you out, and that's with the top off and no bikini top or doors (wheez). It's so bad, that sometimes it smells like raw fuel is coming out of the tailpipe. A little more about original and non-OEM equipment: still has the 1F dizzy, does have the 2F carb (which was rebuilt about 3 years ago), aftermarket headers with aftermarket pipes and exhaust (I can't find OEM exhaust manifold anywhere for a descent price in good shape), put in a new intake/exhaust manifold about a year ago and cannot locate any leaks now, aftermarket (Autozone I think) fuel cap that is supposed to be vented, but does allow a partial vacuum to form in the gas tank (everytime I gas up, there is a sucking sound when I take the cap off), put in a direct replacement mechanical fuel pump (not OEM, but direct bolt on replacement). Compression is even and about 95 psi as I recall (I've slept since then).
This seems like a no-brainer, right? It's running rich...Duh. The engine idles great. The timing is on. It doesn't smell rich at idle, but it does occasionally blow watery soot out of the tailpipe onto the wall in my garage on startup (I have acquired the aftermarket cardboard box to prevent further marking of my walls). As far as I know, the 2F carb still has the original jets. At this point, I am holding an FJ60 dizzy, but I haven't installed it yet. I'm leaning toward the spark side as the culprit, or maybe the exhaust system that was installed about 2 years ago, but wanted to consult the knowledgeable folks on this site. Thanks in advance for your help!
This seems like a no-brainer, right? It's running rich...Duh. The engine idles great. The timing is on. It doesn't smell rich at idle, but it does occasionally blow watery soot out of the tailpipe onto the wall in my garage on startup (I have acquired the aftermarket cardboard box to prevent further marking of my walls). As far as I know, the 2F carb still has the original jets. At this point, I am holding an FJ60 dizzy, but I haven't installed it yet. I'm leaning toward the spark side as the culprit, or maybe the exhaust system that was installed about 2 years ago, but wanted to consult the knowledgeable folks on this site. Thanks in advance for your help!
