1986 Nissan Pick Up Fuel Injection

[DAN 1]

I have a 1986 Nissan pick up. It is a four cylinder with two spark plugs for each cylinder. It has developed an irritating choking down when i press over half throttle. Clears up when I let up on the gas pedal. Thought the problem might be an old fuel filter and I changed that, but the problem remains. I am an old man from the old days of flathead engines and carburators. Smog controls and fuel injection set ups just baffle me.

 

Any experiences, or ideas, for this problem?

 

Is it possible, has it been done, to replace the fuel injection set up with an intake manifold that supports two "duces". I could understand this better than what's on the rig now and have a better chance to work on it myself and maintain it. 

 

DAN 1 "The Old RetroBate".

[DAN 1]

Update: The engine is a "2.4" The only one with two spark plugs per cylinder.

 

Took it in to a mechanic. He found corrosion in the distributer and said that was part of the problem. $179.00

 

Engine still chokes down at more than half throttle.

 

He wants to replace coil and something else too.

 

Another $300.00 

 

Will report back about this in ten days. Hopefully, this will be all that is needed to fix this problem.

 

DAN 1

[NewZed]

Sounds like you have a NAPS-Z engine.  The two plugs are for emissions purposes.  This is probably the wrong forum for your problem, have you tried any of the Nissan truck or Pahfinder forums?

 

These guys seem to cover a wide variety of Nissan engines - http://community.ratsun.net/

 

 

You could probably convert to carbs with some work, but would you be able to pass CA emissions?

 

 

http://en.wikipedia.org/wiki/Nissan_Z_engine

[z240]

May be related to fuel pressure. Have it checked.