Finding Bad Injector


Old 09-22-05, 01:20 AM
Thread Starter
Join Date: Sep 2005
Posts: 31
Finding Bad Injector

Besides my other post about my other car, I also have a '91 Infiniti. It's a V-8, but only running on 7 cylinders. I've been told it's a bad injector (I have a new one, still in the box). Seems to me I can't hurt anything by changing it, but I don't know how to tell WHICH injector to change. Any ideas on identifying a possibly bad injector? Thanks for any thoughts
Sponsored Links
Old 09-22-05, 04:43 AM
thiggy's Avatar
Join Date: May 2002
Location: Alabama
Posts: 718
How do you know the engine is running only on 7 cylinders? Why do you feel it is an injector rather than a spark plug or ignition cable? Pull the individual plugs and examine them to see if one is obviously different from the others. If so, that then is the problem cylinder. I would first replace the plug before fooling with the injector.
Old 09-22-05, 09:37 PM
Join Date: Dec 2001
Location: nc
Posts: 616
Or you can disconnect one spark plug wire, start the engine and see if it makes a difference. If the engine runs worse, hook the wire back up and disconnect a different wire. When the you disconnect one of the wires and the engine is still running on 7 cylinders instead of 6, you have found the problem cylinder. It might also be a bad spark plug wire or, if your car has this, a distributor cap.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes