I have a question in regards to the fuel tank on my 1985 Nissan king cab pick up truck. It has a new fuel pump , filters, lines appear to be clear..When driving the truck appears to be suffocating , not getting fuel, bogs down and dies. It had sat for a long time and previously was driven on empty a lot. Is it possible that the tank is full of shit, which would cause this ? Im not sure if the tank needs to be removed or if there is a cap or plug on the tank which would allow a through draining and cleaning. thanks for any and all help
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I am not familiar with this particular pickup, but you can start with checking the basics. If you take the line loose where it enters the carb, do you have fuel coming out when you crank the engine?(be careful to not spill fuel). If yes, then the carb float jet or input filter may be clogged. A carb rebuild will probably be in order. If there is no fuel at the input to the carb, check the fuel filter and fuel pump (this may be in fuel tank... not certain on that vehicle). Other possibilities are a crushed or kinked fuel line. I hope this helps you track down your problem.
Hi Ahmed, If the vehicle is fitted with a carburetor and a low pressure fuel pump, you can have a universal electric pump fitted and fit it into the fuel line between the tank and the existing pump, (left in place). If the diaphragm of the existing pump is damaged and allowing fuel leakage into the sump, remove the mechanical pump and have a plate made to cover the opening, make a gasket and fit the plate in place of the mechanical pump. If the vehicle has fuel injection, a Toyota hi pressure delivery fuel pump can easily be fitted into the fuel tank in place of the original. Regards John
If you can not duplicate the problem on demand, it will be very difficult to find and know that it is fixed. Do you know if you have lost spark to the plugs or fuel to the injectors when it is hard to start ? There is a long list of choices, including a faulty relay, fuel pump, ignition module, coil, and so on. You have to know if it is a fuel or ignition problem to proceed.
When were the fuel filters changed.sounds like you have water in the fuel.Drain the tank and try new fuel after changing fuel filter.If it was in limp mode you would not get the revs droping down then smoke then picking up.Limp mode only alows you to do about 40mph.