First post here, trying to troubleshoot my problem, hopefully yall can help! I have a 1995 Mustang 5.0 5 speed. As far as motor mods go, it has an msd distributor cap, street fire ignition coil, street fire spark plug wires, headers, and a k&n air filter. My problem is the mustang takes forever to fire up, and when it does it will sputter until higher rpms, and it is smoking a whitish color smoke , smells like fuel. I pulled a plug and it is completely black. I was going to set the timing, but unfortunately my battery died and has a dead cell, so until then I would like to try and figure out potential problems. The rotor button looks fine and seems to be making good contact also. When i was going to set the timing I was looking for the spout connector, and found it, but it is missing the plastic piece that goes into the connection. That seems to be pretty import as far as the ecu controlling the timing and all that, but would it still cause these issues, because currently the mustang runs like crap. Hopefully I can get this problem resolved with yalls expertise!
Mustang sputters; fuel out exhaust- Troubleshoot
- Thread starter 95mustang5.0
- Start date
With a dead battery you are literally blind. You need to pull the trouble codes otherwise solutions are at best wild guesses. You need the SPOUT connector. With it removed the timing is fixed to what it is. Factory spec is 10* BTDC. I would check the HB for any signs of failure before relying on the timing mark reading. If you can feel or see any rubber protruding from the HB hub on the engine side the balancer is toast. No exceptions here. White smoke could be both raw fuel or coolant in the exhaust. So, get a battery and pull the codes and go from there.
ratio411
Founding Member
Best to do things with the code reader and in a certain order...
However, if you think it is running WAY rich, it could be a ruptured fuel pressure regulator, and if it is, you need to get on it quick so you don't hurt your engine. So check the pressure regulator by pulling the vacuum line loose from it's vacuum source, and make sure it is not letting the engine suck in raw fuel via the vacuum line. A ruptured diaphram in the FPR will allow the engine to suck gas straight out of the fuel rail using the vacuum line as a straw. It will ruin your oil, could wash out your rings (unseat them), and if the fuel is left in your oil it will destroy your bearings. So give it a quick check.
However, if you think it is running WAY rich, it could be a ruptured fuel pressure regulator, and if it is, you need to get on it quick so you don't hurt your engine. So check the pressure regulator by pulling the vacuum line loose from it's vacuum source, and make sure it is not letting the engine suck in raw fuel via the vacuum line. A ruptured diaphram in the FPR will allow the engine to suck gas straight out of the fuel rail using the vacuum line as a straw. It will ruin your oil, could wash out your rings (unseat them), and if the fuel is left in your oil it will destroy your bearings. So give it a quick check.
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