Injectors

[DMC3165]

Hey all,

They say curiosity killed the cat right. So I've been wondering about this.

My car is at 54300 miles (give or take a little). To the best of my knowledge my injectors were up to spec back in 99 when I first purchased the car from PJ Grady's. But that was 12 years and 40,000 miles ago. Not to mention the fact it sat for seven years from 03-10. Right now everything seems to be working properly and the car is getting very good gas milage (approx 270 miles tankful without the A/C). The car was tuned up and checked out by Grady earlier this summer so I'm reasonably sure everything's good.

But I'm wondering what is the normal life span of the injectors and what are the signs of leaky injectors. I know excessive fuel will destroy piston rings and other internal components. Something I'd like to avoid.

[Chris 16409]

I'm wondering what is the normal life span of the injectors.

I talked to Toby at DMC-NW about this, and he said the injectors typically have a lifespan of about 100,00 miles. Sounds like yours should have some life left in them. Although the car being parked for several years may impact the service life. If you suspect them, they can always be cleaned.

[dmc4087]

If its working, leave it alone :thumbup:

[David T]

The injectors are purely mechanical and last a LONG time provided they stay clean. If the car is being used they are self-cleaning to an extent. If you feel the need you can run a can of Techron once a year. What seems to affect the injectors the most is non-use for a prolonged period with old, stale fuel. Even with that, they almost always clean up in an injector/tester. There are plenty of other things for you to worry about with a Delorean besides the fuel injectors! Your best measure of how the entire engine and drivetrain is performing is watching the gas mileage. If you are getting good mileage then everything is fine. If you see it getting worse then you know something is wrong.
David Teitelbaum