Toyota Trucks: 93 22RE Injectors bad?

Have you replaced the fuel filter? On the 22re (as well as any fuel injected
engine I imagine) if the fuel filter starts getting plugged the pressure to
the injectors won't be consistent. I've found on my and my wife's 22re's that I
know it is time to replace the fuel filter once I start feeling sort of a
"chugging" feeling at lower speeds and rpms.

Chris

Also clean the throttle body
nathan
"Whitewall Junkie" <comSPAMOFF> wrote in message
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Already cleaned the thottle bore and readjusted the stop (throttle had been
sticking closed), but that didn't help with stumbling. Was putting off the
filter 'cause other cars (long ago) behaved differently when filter was
clogged, but if it works for other people, I'll do it.

Thanks.

Jim


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Not sure why you are targeting the injectors. I suppose they get diry if
one buys crappy gas, but my understanding is they don't actually 'go bad'
that frequently. I recently pulled mine at 295,000 miles and they looked
great. I tested them and found no leaks and the spray patterns looked good.
I changed all the o-rings and stuck them back in, fully expecting to get
another 300K out of the little bastards. They have never been 'cleaned,'
yet the ports were clear and the micro-mesh screens inside them looked brand
new. Of course, all I have ever run is Amoco 'white' gas. Don't know if
that has anything to do with it, but it can't have hurt.

I don't think there is any good way to test the injector in the car. The
Toyota delarship tells me that they have a machine that hooks up to the
enire fuel rail and they use this to test them as well as to flush them.
But, my understanding is that is off the vehicle.

If you have eliminated vacuum leaks, what you describe sounds like a
possible ignition problem. Have you ever changed your plug-wires? You can
check the resitance (25 kohm max) to see if they are actually 'bad.'
However, if they have not been changed, they are certainly overdue.
Obviously, I am assuming that you have eliminated the plugs as a problem and
checked your timing. It could also possibly be a coil going bad. That's
checked easily enough with a multimeter as well.

Once ignition is eliminated, gas pressure would be a good thing to check
next. If you have good pressure (38-44 psig), you have immediately
eliminated the fuel pump, filter, and pressure regulator as a source of
problem.

After that, it may be time to take a hard look at the injectors.

Luther

yeah, i would have said throttle-body cleaning or fuel filter clogged
also..... my 95 acted that way with both.... Also, you might check the
vaccum hoses coming off the Throttle -body and do a vacuum test on the EGR
valve.... easy to do. conceiveably could be the O2 sensor(s)...

Sam

"James Andrus" <net> wrote in message
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Check the idler pully bearing also for dragging....
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