I have a 93 Nissan PU, 2.4 Liter, 4 inline, fuel injected(injectors in
cylinders - not carb). It has been running sluggish at low speeds and
no "pep". I was told to check the choke at the "carburator". I checked
it and it looked like it had some deposits so I purchased some spray
choke cleaner and cleaned it. Got it nice and warm and it still runs
sluggish. Checked the choke while running and with the engine @
operating temperature, and it stays closed until the gas is pressed,
and then you have to give it some "gas" for it to open. It opens
slightly. It does sound like a 100 cobras hissing when it happens.

How "open" does the choke usually stay open when the engine is running
and is already warmed up? If I turn off the truck, should the choke
just close-up again, or should it stay open to some degree?

Any input is appreciated.

ER

efrain.ramirez (AT) gmail (DOT) com wrote:

All the injection engines I've played with - not including that one -
don't *have* a choke!

Andy

It is the throttle butterfly. Sorry about that. Should it stay open
when it is warm and running?

Thanks!

Efrain
Andy Champ wrote:

efrain.ramirez (AT) gmail (DOT) com wrote:

Have a look at

http://auto.howstuffworks.com/fuel-injection.htm

HTH

Andy