Fuel injectors (Page 2/2)
pmbrunelle MAY 27, 05:49 PM
Besides changing a filter screen, and flushing them with cleaning solvent, fuel injectors are essentially non-serviceable.

A good bet is probably to have two stock sets cleaned and measured, and then you can select the ones that the closest fuel flow rates for use in the engine.

It is not guaranteed that the six injectors you have will be good after cleaning.

I had a set of 6 cleaned and tested, and one of them leaked (cannot be repaired).
jumpmonkey MAY 28, 01:56 PM

quote
Originally posted by pmbrunelle:

Besides changing a filter screen, and flushing them with cleaning solvent, fuel injectors are essentially non-serviceable.

A good bet is probably to have two stock sets cleaned and measured, and then you can select the ones that the closest fuel flow rates for use in the engine.

It is not guaranteed that the six injectors you have will be good after cleaning.

I had a set of 6 cleaned and tested, and one of them leaked (cannot be repaired).



Sometimes, when you send the injectors in to be cleaned/flow tested, they'll first be tested to make sure they're salvageable. Most places will do that for free so you don't get charged for injectors that can't be saved. I sent my injectors in recently and am waiting to hear back on whether they can be brought back to life or not. My project had been sitting for 10ish years before I bought it and the fuel pressure regulator completely deteriorated so the injectors are totally clogged. If mine can be saved, I assume most can.

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Jumpmonkey

82-T/A [At Work] MAY 28, 02:14 PM

quote
Originally posted by jumpmonkey:


Sometimes, when you send the injectors in to be cleaned/flow tested, they'll first be tested to make sure they're salvageable. Most places will do that for free so you don't get charged for injectors that can't be saved. I sent my injectors in recently and am waiting to hear back on whether they can be brought back to life or not. My project had been sitting for 10ish years before I bought it and the fuel pressure regulator completely deteriorated so the injectors are totally clogged. If mine can be saved, I assume most can.





Hey Jump, where did you send your injectors?

I have a rare set of 17lb Accel fuel injectors that have less than 10k miles on them... BUT, they've been in a car that's been sitting for 14 years. I can't find the replacement ones with the pintles... and I definitely want to get them rehabbed...


thanks!
pmbrunelle MAY 28, 05:15 PM

quote
Originally posted by 82-T/A [At Work]:
I can't find the replacement ones with the pintles... and I definitely want to get them rehabbed...



The Fiero engine doesn't need pintle-type injectors.

The Fiero ECM's factory tune assumes pintle-type injectors, so if you want to use a stock Fiero ECM and stock tune, then you should use pintle-type injectors.

If you will be using a custom tune and/or a different engine computer, then there is no strong reason for you to stick with a pintle injector.
olejoedad MAY 28, 09:41 PM
We've seen a lot of Accel injectors, and have been disappointed with their performance and reliability.

Same with their spark plug wires and spark plugs.
pmbrunelle MAY 29, 07:42 AM

quote
Originally posted by olejoedad:
We've seen a lot of Accel injectors, and have been disappointed with their performance and reliability.



The leaky injector I mentioned in my previous post was an Accel injector.
82-T/A [At Work] MAY 29, 08:15 AM

quote
Originally posted by pmbrunelle:

The Fiero engine doesn't need pintle-type injectors.

The Fiero ECM's factory tune assumes pintle-type injectors, so if you want to use a stock Fiero ECM and stock tune, then you should use pintle-type injectors.

If you will be using a custom tune and/or a different engine computer, then there is no strong reason for you to stick with a pintle injector.




For Yellow's application, he has a stock ECM, with no modifications.

For me though, I am planning on going with an aftermarket ECM (more than likely the FAST EZ-EFI 2.0 system, but I also have a MicroSquirt w/ 8' harness). I simply want to re-use them because they have such low miles... but it depends on whether or not I can get them cleaned, and which system I decide to use. The EZ-EFI 2.0 supports SFI, while the MicroSquirt does not. I suppose SFI vs MPFI makes little difference in overall horsepower, but it does give better optimized performance in the lower to mid-range RPM.

I mean, I have the Accel injectors, they worked great until I wiped a cam lobe... so I'll probably re-use them.
jumpmonkey MAY 29, 01:19 PM

quote
Originally posted by 82-T/A [At Work]:
Hey Jump, where did you send your injectors?

I have a rare set of 17lb Accel fuel injectors that have less than 10k miles on them... BUT, they've been in a car that's been sitting for 14 years. I can't find the replacement ones with the pintles... and I definitely want to get them rehabbed...


thanks!



Jim at Injector Repair LLC is servicing them for me. I just spoke with him on the phone and he said that my injectors should be salvageable! He's gonna try and break them all free and then get back to me.

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Jumpmonkey

82-T/A [At Work] MAY 29, 01:48 PM

quote
Originally posted by jumpmonkey:
Jim at Injector Repair LLC is servicing them for me. I just spoke with him on the phone and he said that my injectors should be salvageable! He's gonna try and break them all free and then get back to me.




Awesome, thank you!