I have a 1993 Nissan Pickup 4 cylinder, fuel injection. Recently while I am in gear it starts to surge in and out without me pressing on the gas pedal. I can feel that the engine is losing power. Starting on a flat surface and working the gears from low to high is beginning to be a challange for this small engine. It is struggling to gain power and momentum. When I press the gas pedal down its okay if pressed only a little, but when I step my foot down I can hear the engine starting to "rev". Any help would be appreciated.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Defective Ignition Components
(ignition coil/s, distributor*, distributor cap*, distributor rotor*, ignition wires, and spark plugs - NOTE:*Distributor-less engines do not have these components)
Lean Fuel Mixture
Defective Catalytic Converter
(Some symptoms of a bad catalytic converter:
Major loss of power over 15-25 mph.(does this speed sound familiar to you?)
Strong sulfer or rotten egg smell emitting from the exhaust.
Loud rattle being heard from inside the catalytic converter.
Your getting backfires? hmm interesting. Seems like your engine is getting flooded and either purging it out of the exhaust or burning it all at once or both (backfire). Sounds like a leaky engine valve to me.There again the bluish smoke indicates to me thatyou are leaking oil somewhere- bad rings or head gasket maybe, which could cause a loss of compression which could also cause your problems.That rattling from the left/rear side sounds like a bad muffler try kicking the muffler (not hard though) next time you walk by it.
Check your intake and exhaust modules. I have a 1987 D21 and had the same problem (if I understand your post). I replaced the modules located behind the driver side headlights and it fixed the problem. Good luck! I hope this helps.
Your truck should have fuel injection, so there would not be a choke. Your best bet is tostart with simple items. Sounds like you have a main line fuel filter clogging up. And if that is the case, you need to have your injectors flushed.