Need help testing my fuel injectors

Reply Subscribe

Thread Tools

Search this Thread

Sep 1, 2010 | 06:41 PM

KeithZ28ss

Thread Starter

Teching In

iTrader: (1)

Joined: Jan 2009

Posts: 40

Likes: 0

From: Maryland

Need help testing my fuel injectors

Need a little help testing the fuel injectors in my wife's 2001 Camaro, 3.8L. I got my handy dandy DMM tool (see attachment), but I'm not sure of the settings, or even what to look for on the display, in all honesty, I barely know how to even use the thing. I hate electrical s#!*

Can someone walk me through how to check the injectors? What setting do I use on the DMM? Where do I attach the connectors, and what am I looking for on the display. Any help would be greatly appreciated.

Thanks!

Attached Thumbnails

Need help testing my fuel injectors-img_0035.jpg

Sep 2, 2010 | 07:28 AM

Old Geezer

TECH Senior Member

iTrader: (3)

Joined: Jun 2004

Posts: 5,639

Likes: 71

From: GA, USA

What is the problem w/ them? Not firing?, leaking?, etc etc....

Sep 2, 2010 | 09:01 AM

KeithZ28ss

Thread Starter

Teching In

iTrader: (1)

Joined: Jan 2009

Posts: 40

Likes: 0

From: Maryland

Car is missing pretty bad. Replaced the Coils, plugs, and wires recently. It has 142K miles on the original injectors, I just want to rule them out before I continue.

Sep 2, 2010 | 10:33 AM

Nasty N8

FormerVendor

iTrader: (33)

Joined: Feb 2002

Posts: 5,052

Likes: 0

From: Lake in the Hills, IL

The ohms of each inj. should be about 13.5-14.5 and all should be very even. Bottom left section on your meter 200 scale should do it. Unplugged prob both terminals on the inj.

Sep 2, 2010 | 12:12 PM

KeithZ28ss

Thread Starter

Teching In

iTrader: (1)

Joined: Jan 2009

Posts: 40

Likes: 0

From: Maryland

Quote:

Originally Posted by Nasty N8

Unplugged prob both terminals on the inj.

So from here, I put one probe on a 12v power source and the other on the injector terminals (one terminal at a time or both)?

Sep 2, 2010 | 01:39 PM

SShawn

12 Second Club

iTrader: (6)

Joined: Apr 2006

Posts: 456

Likes: 0

From: Rochester, NY

We offer a cleaning service as well if your DMM tests check out. $10 an injector to flowtest and clean them.

Sep 2, 2010 | 04:43 PM

Nasty N8

FormerVendor

iTrader: (33)

Joined: Feb 2002

Posts: 5,052

Likes: 0

From: Lake in the Hills, IL

NO no wiring at all completely unplug just ohm the inj. one lead on one terminal the other lead on the other (doesnt matter which) just checking resistance of the inj. and Yes I send all mine to New Era for testing and cleaning.

Trending Topics

Epic SRK B/S thread of 2019

12.7k

563.7k
LS lifters recomendation

12

302
Canted valve heads

116

14.1k
LQ4 - Spools But No Boost

22

499
Snapped rocker bolt

31

672

Sep 2, 2010 | 08:42 PM

KeithZ28ss

Thread Starter

Teching In

iTrader: (1)

Joined: Jan 2009

Posts: 40

Likes: 0

From: Maryland

Quote:

Originally Posted by SShawn@NewEra

We offer a cleaning service as well if your DMM tests check out. $10 an injector to flowtest and clean them.

Well, I won't be sending the injectors in from this car. She is on her last leg. There is just too much going on that needs fixing. We are just gonna drive this ol girl into the ground. I will look into sending the injectors from my 01 SS though. She has 128k miles, and is probably due for a good scrubbin'. Thanks!

Quote:

Originally Posted by Nasty N8

Great, thanks. I'll do this tomorrow. Appreciate the help!