C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

How many Miles do Injectors last?

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Old May 4, 2002 | 10:01 PM
  #1  
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84Coyote
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Default How many Miles do Injectors last?

Hi All,
Just wondering how many miles injectors should last. Mine are the original with 200,000 plus. What signs would indicate them needing to be changed? Thanks! :chevy
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Old May 4, 2002 | 10:20 PM
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Default Re: How many Miles do Injectors last? (84Coyote)

That's gotta be some kinda service record for the General.

If they are leaking, sticking open/closed or getting weak they should be serviced.

Check the resistance of each; replace any that differ widely from the others.

Hard warm starting is a symptom of leaking injecotors.

A sooty spark plug will show a rich running cylinder, a ashy white plug will show a lean running cylinder.

Of course these latter tests might not show up an injector that's marginal. Such could be costing you power or fuel economy.

I just got mine (all 9) back from Rich at Cruzin Performance and several were leaky, which accounts for my hard warm start problem.
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Old May 4, 2002 | 10:38 PM
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From: Glendale, AZ
Default Re: How many Miles do Injectors last? (65Z01)

That's gotta be some kinda service record for the General.

If they are leaking, sticking open/closed or getting weak they should be serviced.

Check the resistance of each; replace any that differ widely from the others.

Hard warm starting is a symptom of leaking injecotors.

A sooty spark plug will show a rich running cylinder, a ashy white plug will show a lean running cylinder.

Of course these latter tests might not show up an injector that's marginal. Such could be costing you power or fuel economy.

I just got mine (all 9) back from Rich at Cruzin Performance and several were leaky, which accounts for my hard warm start problem.
I'm gonna change ALL mine out....where is the 9th on an 85 (cold start injector i presume?) and what brand to buy......i want NOS injectors (yes just for the name) wouldn't that be cool under the hood?
:lol:
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Old May 4, 2002 | 10:41 PM
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From: SE NY
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Default Re: How many Miles do Injectors last? (85_togo)

The 9th is the "cold start" located between #3 & #5 runners in the lower flange.
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