I have been reading threads all morning and can't relate my issue exactly with other problems.
I have a 1985 fj60 with 310,000k Full Desmog, Webber Carb 38/38, Fuel Pressure Reg, Inline fuel pressure gauge, Firecracker kit Distributor, Coil, plugs and wires, Gm Alternator, Saginaw Powersteering conversion Long Tube Headers. been running fantastic for years and has never let me down. I was traveling about 100 miles yesterday to go purchase a 94 80 with a blown head gasket. I had been on the Hwy for about 50 miles and I noticed my fuel gauge drop all of a sudden. HMMM so I asked her Lucy are you ok, then it started slowly climbing back up went past half and slowly stopped.... then came back down and settled right under half where it was before. Well, that was unusual so went about 4 more miles got off at my exit. I sat at the signal waiting and waiting she idling just fine. I see a gap dumped the clutch turned left took 1st to about 4,200 shifted 2nd again red-lining snatched 3rd I was moving about 50 and just as I got to the top of the hill she tried to fall flat on her face, BUH RPS drop I let off the gas, but she is still running I pull over now looking stupid. The truck is still running, Idle is fine go through the motions of checking the gauges. Not hot, showing fuel, pop the hood start to check the inline fuel pressure gauge, showing around 2psi. Go over to the filter, it's a cheaper clear one usually gas is violently circulation but now it just bubbling and not full. So I turned around and drove 50miles home on back roads and she never died sat at 30 red lights gas gauge did the surge thing a few more times and not every time but when I would try to run out a gear mostly 2nd to 3rd she would start to sputter. If I kept the shifts under 2,100rps and drove under 2,500rpm witch was around 55 for me she ran fine made it home. So what do you think, I took off the fuel filter has sediment but I was able to blow through it with ease. Before I start blowing out the lines. Does a stock Machinal fuel pump go bad? When it does what is the psi it pushes. Because the factory carb would not run on that low of psi but since the Webber likes high flow low psi. Im thing that is how I was able to limp it home. I have never touched the fuel pump it could be Original had the truck since 180,000k. I do have a block off plate and redline pump on the shelf. But any thought on what the issue might be?
I have a 1985 fj60 with 310,000k Full Desmog, Webber Carb 38/38, Fuel Pressure Reg, Inline fuel pressure gauge, Firecracker kit Distributor, Coil, plugs and wires, Gm Alternator, Saginaw Powersteering conversion Long Tube Headers. been running fantastic for years and has never let me down. I was traveling about 100 miles yesterday to go purchase a 94 80 with a blown head gasket. I had been on the Hwy for about 50 miles and I noticed my fuel gauge drop all of a sudden. HMMM so I asked her Lucy are you ok, then it started slowly climbing back up went past half and slowly stopped.... then came back down and settled right under half where it was before. Well, that was unusual so went about 4 more miles got off at my exit. I sat at the signal waiting and waiting she idling just fine. I see a gap dumped the clutch turned left took 1st to about 4,200 shifted 2nd again red-lining snatched 3rd I was moving about 50 and just as I got to the top of the hill she tried to fall flat on her face, BUH RPS drop I let off the gas, but she is still running I pull over now looking stupid. The truck is still running, Idle is fine go through the motions of checking the gauges. Not hot, showing fuel, pop the hood start to check the inline fuel pressure gauge, showing around 2psi. Go over to the filter, it's a cheaper clear one usually gas is violently circulation but now it just bubbling and not full. So I turned around and drove 50miles home on back roads and she never died sat at 30 red lights gas gauge did the surge thing a few more times and not every time but when I would try to run out a gear mostly 2nd to 3rd she would start to sputter. If I kept the shifts under 2,100rps and drove under 2,500rpm witch was around 55 for me she ran fine made it home. So what do you think, I took off the fuel filter has sediment but I was able to blow through it with ease. Before I start blowing out the lines. Does a stock Machinal fuel pump go bad? When it does what is the psi it pushes. Because the factory carb would not run on that low of psi but since the Webber likes high flow low psi. Im thing that is how I was able to limp it home. I have never touched the fuel pump it could be Original had the truck since 180,000k. I do have a block off plate and redline pump on the shelf. But any thought on what the issue might be?
