Lincoln Jealous
Dedicated LVC Member
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- Aug 8, 2009
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i goto advanced auto, the code is read in full description and theyre very helpful
running poor
- Thread starter Bossed
- Start date
misfire diagnosis
Hi,
I am the tech manager at Autolite. Please go to the Autolite website and watch the autolite challenge video on misfire diagnosis. It will give you step by step instructions on how to logically troubleshoot your misfire issues without throwing expensive parts at your car. Good luck and let me know if I can help.
Jay
I need some help fellas, The motor was replaced in my 2000 LS V8. I replaced the plugs in the motor before it was installed in the car (Bosch Platinum). After finally getting the car back I'm having misfires on cylinders 1 and 3. I ordered the ebay coils and installed them just on #1 and #3 to see if it would knock out the misfire issue, no luck, so I pulled plugs 1 and 3 and they were fouled, very rich. I replaced the plugs with Autolite platinums and tried the old coils, same misfire #1 and#3. I rechecked the plugs and replaced the old coils with the new ones and still the same thing. (Yes I checked the gap .039/.042) Would a fuel injector issue cause this? PLEASE HELP!!! Any ideas?
Bossed
Hi,
I am the tech manager at Autolite. Please go to the Autolite website and watch the autolite challenge video on misfire diagnosis. It will give you step by step instructions on how to logically troubleshoot your misfire issues without throwing expensive parts at your car. Good luck and let me know if I can help.
Jay
Lincoln Jealous
Dedicated LVC Member
- Joined
- Aug 8, 2009
- Messages
- 3,122
- Reaction score
- 17
we buy our sh!t from max around here buddy, KICK ROCKS!
FASTLLS
Dedicated LVC Member
He was offering help for misfires.. lol
Jealous,
I am not trying to sell you anything, simply offering help by pointing the forum to some training videos we made for professional techs that are now available to all. I get paid to teach auto mechanics, I am not a salesman.
Enjoy your day
FASTLLS
Dedicated LVC Member
Excuse him.. He just started his period and for some reason all the stores are sold out of Midol.. :lol:
Bossed
Active LVC Member
Hey guys, I finally got back to the LS. I pulled the injectors on the left bank where I was having the misfires. I swapped #1 and #3 injectors(misfire), with #2 and#4,to see if the misfire were injector or injector plug related. Now it's still saying #3 misfire, but instead of #1, I've got #4 cyl. misfire. The codes are 0303,and 0304, and yea its still running POOR!!!!!
Bossed
Active LVC Member
Joe, the codes I'm getting are 0303 and 0304. Cylinders #3, #4 misfire? The gorilla(mechanic) broke all the injector plugs,but I think they're on pretty good.
Bossed
Active LVC Member
The COP's are all new.
FASTLLS
Dedicated LVC Member
The only advise I can see is check to make sure the connectors on both the injector and cop are high seated right.. check the harness going to both to make sure there is no breaks in the wires.. which I assume is what is happening since you switched injectors and the problem persists..
Mechanicboy
Dedicated LVC Member
Does the car run fine when cold then start to misfire when it warms up? If so I know someone have the same problem with his gen1 v8 and want to know if this is normal for the v8 when a coil is going out. I haven't been able to runs codes or see the car in person since the problem started so I'm blind and trying to help him.
Sorry for the quasi tread jacking.
Sorry for the quasi tread jacking.
Bossed
Active LVC Member
No its misfiring period.
joegr
Dedicated LVC Member
I'm sticking with the thought that it is the connectors to the injectors. Just pushing them in won't do, if the latch is broken. You should be able to use ty-wraps to hold them in.
FASTLLS
Dedicated LVC Member
Agreed.. It could be slipping back just enough to not make a connection..