'75 W200 won't idle
#11
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I don't think it's the fuel pump, the float bowl is always full of fuel when I take the carb apart. To rule out a clogged fuel filter and bad gas, I run a rubber fuel hose straight from a 5gal gas can to the pump with no change in performance.
When I cleaned the carb I did buy a rebuild kit but I used only the new gaskets, not the hardware. The reason being that the carb itself is only about a year old so I didn't think the hardware could be bad yet. I will pull the carb apart again and replace the hardware and clean everything again.
I'm also wondering if it could be an ignition problem. I'm getting spark at all 8 cylinders, but it's a very weak spark. Instead of a nice bluish white color the spark is yellow/orange. The plugs themselves have a ton of carbon buildup on them, and the plug wires are in sad shape. I went and bought a whole new set of plugs and wires, plus a new cap and rotor. Hopefully this solves the problem if cleaning the carb doesn't work.
When I cleaned the carb I did buy a rebuild kit but I used only the new gaskets, not the hardware. The reason being that the carb itself is only about a year old so I didn't think the hardware could be bad yet. I will pull the carb apart again and replace the hardware and clean everything again.
I'm also wondering if it could be an ignition problem. I'm getting spark at all 8 cylinders, but it's a very weak spark. Instead of a nice bluish white color the spark is yellow/orange. The plugs themselves have a ton of carbon buildup on them, and the plug wires are in sad shape. I went and bought a whole new set of plugs and wires, plus a new cap and rotor. Hopefully this solves the problem if cleaning the carb doesn't work.
#13
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I finally found the problem, there was a ton a water in the gas. I drained the old gas and rebuilt the carb again and she's running great! The reason I didn't catch the bad gas the first time is because I didn't give the new gas from the aux tank enough time to make it to the carb, it takes a full 3 minutes for the gas to make it from the tank to the carb. Is there some additive I can put in the gas tank to make sure this doesn't happen again?
Last edited by CSXfan; 11-27-2011 at 07:47 PM.
#14
#15