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Author Topic: Rich, altogether  (Read 13871 times)

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GTRS Fiero

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Rich, altogether
« on: August 07, 2020, 08:50:16 am »
For an '84 2.5 L4, it runs rich.  I'm trying to figure out how to adjust the fuel ratio.  Any ideas?
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Fierofool

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Re: Rich, altogether
« Reply #1 on: August 07, 2020, 09:16:38 am »
If the injector was taken out during the rehab, it's possible that one of the gaskets was left out.  I did that on the Duke Coupe when I replaced the injector.  It was dumping fuel around the base of the injector.  Take the cover off the air filter and watch it.  Also, verify that the CTS wasn't replaced with a temp gauge sending unit.  The kids might not know the difference and spliced in the wrong sender. 
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GTRS Fiero

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Re: Rich, altogether
« Reply #2 on: August 07, 2020, 05:03:17 pm »
The sensors appear to be correct.  The injector was replaced.

I can't really complain about the kids' work.  Apparently, having been cooped up with nothing to do, they were happy to have some purpose.  They got a lot done in a short time.
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TopNotch

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Re: Rich, altogether
« Reply #3 on: August 07, 2020, 09:33:36 pm »
I'm not familiar with the 84 injector, but if it's anything like the 88 duke injector, it could be the injector O-ring.
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GTRS Fiero

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Re: Rich, altogether
« Reply #4 on: August 07, 2020, 09:36:02 pm »
Well, after it comes back from inspection, we'll see.
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Fierofool

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Re: Rich, altogether
« Reply #5 on: August 07, 2020, 09:39:33 pm »
The injectors are almost identical but not interchangeable.  It seems they changed about maybe '86.  The 87 and 88 injectors are the same.  If it's the O-ring, you can really see the flood of fuel coming out, rather than just at the nozzle. 
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There are three kinds of men:

1.    The ones that learn by reading.
2.    The few who learn by observation.
3.    The rest of them have to pee on the electric fence and find out for themselves.    Will Rogers

GTRS Fiero

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Re: Rich, altogether
« Reply #6 on: August 07, 2020, 09:41:18 pm »
So, the O-ring would leak externally, right?
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TopNotch

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Re: Rich, altogether
« Reply #7 on: August 07, 2020, 09:43:09 pm »
On the 88 injector, a leaking O-ring allows gas to pour down the throttle body throat.
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The more complex the mind, the greater the need for the simplicity of play.

GTRS Fiero

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Re: Rich, altogether
« Reply #8 on: August 07, 2020, 09:57:50 pm »
Ugh.  Could be.
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