Injector issue
Thread Starter
Instructor
Joined: May 2001
Posts: 127
Likes: 1
From: Yorba Linda, CA,,,USA
Injector issue
I have a 2001 C5 with about 45,000 miles on it. It has a miss while idling, and after adding a bottle of injector cleaner, the miss stops. The problem is that after adding the cleaner, it only seems to last for about 1500 miles. If it’s not throwing a code, is there any way to determine which injector is sticking?
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
You need to isolate the miss down to a single cylinder and work from there. It easy to swap injectors around to see if that is the issue. My guess is that is not an injector but a wire or a plug. Examine your wires for damage and measure the internal resiastace of the wire. It should be 250 - 750 ohms.
Bill C
Bill C
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Couple of other suggestions. You can do a balance test on the injectors to find out if one is sticking. I bought the tool at Autozone, not sure if they rent it or even still sell/make it. Its made by Actron.
Actron Tool
Other option would be to start running FP60 in the fuel for a while. You can find this here:
FP60
Actron Tool
Other option would be to start running FP60 in the fuel for a while. You can find this here:
FP60
Thread Starter
Instructor
Joined: May 2001
Posts: 127
Likes: 1
From: Yorba Linda, CA,,,USA
I tried to get the boots off of the plugs, and they're like glued on. I'm afraid that I'll damage the wire trying to take them off. Is there a tool that can help with this?
Instructor
Joined: Jan 2005
Posts: 102
Likes: 0
From: Oklahoma
Push the wire connector in and turn than pull I believe thats what they say to do in the Tech stuff. Put a scan tool on it, it should tell you what injector is missing if there is one missing, by giving you a miss fire code to one of the cylinders.
Or you can do an Ohm's test to the injector. All the injector is red and black like a battery just put the meter leads red to one and black to the other one and get a ohms reading.
The ohms are 11.0-14.0 ohms.
Hope this helps
Or you can do an Ohm's test to the injector. All the injector is red and black like a battery just put the meter leads red to one and black to the other one and get a ohms reading.
The ohms are 11.0-14.0 ohms.
Hope this helps
Team Owner
Joined: Mar 1999
Posts: 22,025
Likes: 192
From: At the beach in little Rhody
Injector wires or plug wires? I couldn't get my plug wires off after 5K miles so your not alone. Have bandaid's at the ready. I ended up putting on new wires.
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