Replacing Injectors

[QB93Z]

Last Sunday we replaced the injectors in George's 1990 ZR-1. The car does not have many miles on it and the injectors were original.

The results were the car performed significantly better with new injectors.

When I measured the injector coil resistance of the old coils, I found 4 that had low reisitance.

My measurements were taken at room temperature. Most of the injectors read 12-12.5 ohms. Three of the bad injectors read about 6 ohms.

If you still have original 1990 injectors in your ZR-1, I suggest checking/replacing them.

Jim

[secondchance]

Good to hear. I wonder sometimes how many Zs are out there running on crappy injectors and/or breached vacuum system with owners who are oblivious of the fact.

[ScottZ95ZR1]

Originally Posted by secondchance

Good to hear. I wonder sometimes how many Zs are out there running on crappy injectors and/or breached vacuum system with owners who are oblivious of the fact.

I've wondered about this. As far as I know I have no injector problems and I've read the '93-'95 injectors will likely not fail.
But after 15 years (or more) could replacing them produce a noticeable improvement in performance - even though the stock injectors haven't really failed?

I am somewhat confused as to the chances of my injectors failing.
I remember Dave J had one fail on his '94 but after reading this article on Marc's site I felt there would be little chance I'd need to replace mine?
http://www.zr1specialist.com/HAT%20W...eplacement.pdf

Sorry Jim, I know the post was targeting the 90 model but I was just considering this issue when you posted the thread.

[Scrrem]

Guess I better do a measurement on mine. Great....more maitenance to add to my list
Rich

[ZR1Vette]

There has been document failures of 93-95 injectors and many have replace them and experienced engine improvement.

Dave can chime in on this one...

[Jagdpanzer]

I believe in David's case it was not a coil insulation failure but one stuck open injector.

[ScottZ95ZR1]

Thanks for the quick feedback, guys.

I had just done a search on "injectors" and pulled this thread. I didn't look closely at it's location to realize I was jumping into WAZOO-land.
No place I'd rather be given the choice!

Back on topic, it makes sense that a new set could improve performance even without a full-blown failure.
I bought a set from FIC when they had the limited supply of brand new Bosch injectors and was wondering if I'd really ever use them.
They are vacuum sealed but I guess I'll need to have them checked out before I install them if/when that day comes.

[ZZZZZR1]

Originally Posted by Jagdpanzer

I believe in David's case it was not a coil insulation failure but one stuck open injector.

Yes sir! The primary dumped and blew out a cat that got stuck in the X-Pipe....

Thanks for your help that day with the Gears!




David

[ScottZ95ZR1]

Originally Posted by ZZZZZR1

Yes sir! The primary dumped and blew out a cat that got stuck in the X-Pipe....

Thanks for your help that day with the Gears!




David

Just another reason I wish I lived in WAZOO-land.
Those Viper gears are still sitting on the shelf next to the injectors !

[LORDVDR]

I am pretty certain my injectors were replaced somwhere along the line, but its something I would like to look into. Added to my list of stuff, like fix my AC. Find out why my trip computer/mileage/range is not working and what fuse blew on my climate control. Whens the next maintnace day guys?????