TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

When should orginal 20 year old TBI fuel injectors be replaced?

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Old Jul 14, 2010 | 11:56 AM
  #1  
Arctic White 91 RS's Avatar
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From: MidWest
Car: 91 RS/ 99 T/A/ 72 Vette/ 02 Z28
Engine: LSx/ Dart400
Transmission: M6/ M6/ TH400/ 4L60E
Axle/Gears: 4.10's / 3.08/ 2.73
When should orginal 20 year old TBI fuel injectors be replaced?

When should orginal 20 year old TBI fuel injectors be replaced? They have 328,000+ miles on them.

My RS is a daily driver once again, making 600 mile road trips several times a month. Ignition system, cooling system, starter etc are all in excellent condition.

I know from past experience starters tend to last me about 160,000 miles & fuel pumps about 200,000 miles. I have no idea with the fuel injectors.

Should they be replaced?

LS1 swap is still a year+ away...

Thank you
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Old Jul 14, 2010 | 01:21 PM
  #2  
uraijit's Avatar
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Re: When should orginal 20 year old TBI fuel injectors be replaced?

When they start leaking...
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Old Jul 14, 2010 | 04:56 PM
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Re: When should orginal 20 year old TBI fuel injectors be replaced?

do you have a timing light. if so hook it up as you would normally and watch the injectors with the engine idling. see if there is a big difference or a drip.
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Old Jul 15, 2010 | 11:07 AM
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Ronny's Avatar
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Re: When should orginal 20 year old TBI fuel injectors be replaced?

If you want them professionally cleaned rebuilt send to FIC injectors
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