08 4door rubi missing
Thread Starter
JK Newbie
Joined: Oct 2010
Posts: 2
Likes: 0
From: Baltimore
08 4door rubi missing
I have a 2008 4 door rubi that misses when I try to accelerate fast. Changed oil, plugs, filters.
The only next thing I can think of is changing the wires but those I have to make cause not available other than at the dealer. Any other suggestions for troubleshooting?
The only next thing I can think of is changing the wires but those I have to make cause not available other than at the dealer. Any other suggestions for troubleshooting?
JK Jedi Master
Joined: Feb 2008
Posts: 12,907
Likes: 185
From: Maine
Are you getting a misfire code, or check engine light?
Before you replace the wires:
Check the wires at night for arcing.
Check the wires for resistance. They should be between 250 ohms and 1000 ohms per inch of length.
Before you replace the wires:
Check the wires at night for arcing.
Check the wires for resistance. They should be between 250 ohms and 1000 ohms per inch of length.
JK Newbie
Joined: Nov 2009
Posts: 87
Likes: 0
From: Round Lake, Illinois
Does it do it if you brake torque it?
I'll tell you how I would find this in the shop. Idle the engine. Then, get a spray bottle full of water, set it to mist, and spray all the wires, paying particularly good attention to where the wires run near anything metal, brackets, and the head itself. If you see any sparks, or arcing, on a particular wire, that's the wire you need to replace. Depending on your mileage, you could just do one, but you should do all of them.
If you don't see anything, try it at night while someone brake torques it. You could also use a test light that's grounded, and hold it close to the wires checking them one at a time. It won't light the test light, but you should see the arc between the wire and the end of the test light.
Some obvious precautions, beware of the belt and anything moving while the engine is running.
Don't touch the spark plug wires while the engine is running. If one of them is leaking spark, and you touch it, it will sting.
If someone is brake torqueing it, don't stand in front of it.
And don't get too happy with the water bottle, don't spray the electronic components. Chances are nothing will happen even if you use a hose on them, but why take a chance.
I'll tell you how I would find this in the shop. Idle the engine. Then, get a spray bottle full of water, set it to mist, and spray all the wires, paying particularly good attention to where the wires run near anything metal, brackets, and the head itself. If you see any sparks, or arcing, on a particular wire, that's the wire you need to replace. Depending on your mileage, you could just do one, but you should do all of them.
If you don't see anything, try it at night while someone brake torques it. You could also use a test light that's grounded, and hold it close to the wires checking them one at a time. It won't light the test light, but you should see the arc between the wire and the end of the test light.
Some obvious precautions, beware of the belt and anything moving while the engine is running.
Don't touch the spark plug wires while the engine is running. If one of them is leaking spark, and you touch it, it will sting.
If someone is brake torqueing it, don't stand in front of it.
And don't get too happy with the water bottle, don't spray the electronic components. Chances are nothing will happen even if you use a hose on them, but why take a chance.
JK Junkie
Joined: Feb 2008
Posts: 2,071
Likes: 2
From: Nampa, Idaho
I am running Granetelli wires with Bosh Platinum IR Fusion plugs.
I could not believe how cheap the stock plug wires are made. When I was swapping out the wires i ruined 2 of the stock wires just pulling them off the stock plugs. So I dissected them and lets just say that the stock wires are 100% junk!
I could not believe how cheap the stock plug wires are made. When I was swapping out the wires i ruined 2 of the stock wires just pulling them off the stock plugs. So I dissected them and lets just say that the stock wires are 100% junk!