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Discussion Starter #1
Hi guys, I ride an 04 Vulcan 1600 Meanstreak and have been having some major issues with spark plugs. That problem being life span. I am burning through plugs in about 2 weeks depending on how much I ride. I was running a power commander which I was told to take out because it could be messing with the air/fuel. I did and yet the problem persists. My next course of action is to remove the hypercharger im running on it and replace with a more economical air intake however I would rather not if I dont have to...Does anybody else have any experience with this issue or any suggestions? Thanks in advance
 

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Do a quick search in Google for "reading spark plugs" should be able to sort out your issue by comparing the photos with your plugs.
My guess is, assuming you are using the correct fuel grade and proper plugs you have a fuel/air ratio problem most likely caused by that "hyper-charger" and not a timing issue since you have not indicated any type of performance problem. hesitation,knocking, running hot, idle issue, stalling, lack of power.

The thing is, if you cram more air in (hyper-charger) you alter you fuel/air ratio. I'm assuming a power commander is used to alter this fuel air ratio, and if you removed it you will be running too lean.

Are you sure the Power Commander was working before you took it out? Cause if it S*it the bed, or got out of adjustment ( lost it's MAP) then you will experience some problems.

I would remove that hyper charger, make sure you are running the correct tempature plugs. Then see if you still go through them every two weeks.

I run a stock '08 Nomad 1600 and only change plugs every 2 -3 years.
 

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1. How many miles on the bike?
2. How long have you owned?
3. Did this just happen one day or?
4. Any recent work?
5. Any driveability issues, no matter how unrelated.
6. Post a picture of the plugs.
 

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Discussion Starter #4
Rusty fender - Thanks, I will compare to that site asap. Aside from the obvious lack of power and backfiring when the plugs start to go I notice no power loss or issues. It runs mint until the plugs start to fail and then its an immediate difference that i have learned to acknowledge as soon as the bike starts.

The power commander was working prior to its removal. It was adjusted in the past to try and resolve this issue and I also noticed a difference once it was removed.

Thanks for the advice!


sfair -

1. Approx 18,000 miles
2. 3years
3. It has been ongoing since purchased but seems the replacements have become more frequent
4. No work aside from oil changes and removing the power commander
5. Bike rides amazing, not a single complaint until the plugs start to go
6. Ill try to get a pic later tonight and post

Thanks
 

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Ok, they are not "burned" but carbon fouled.

1. As rusty said, are they the correct heat range as specified by Kawasaki?
2. How long does it take, in miles, to carbon foul?
3. Who installed the PC and the Hyper?
4. Modified exhaust system?
 

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Discussion Starter #8
Thanks, sorry im not very mechanically savy!

1) I am having trouble finding the correct heat range specified by kawasaki as I do not have the owners manual and I have been unable to find it on line...

2) It takes only about 100-150 miles before fouling

3) The previous, previous owner installed the pc and hypercharger

4) Yes it has Cobra pipes

I am not exactly sure what the FI light is but there are no lights on aside from the frequent gas light

Thanks for the help
 

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Discussion Starter #10
Awesome, found the manual and I am running the exact plugs that are recommended.

Ya it seems to be on more than off!

From what I can tell without unwrapping all of my wiring it does not appear that mod has been done.
 

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Discussion Starter #12
Yes that is correct. Fuel light is not constantly on, was just making a joke because of the amount of fuel the bike burns it seems to be on more than off!
 

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OK, next thing to check is air temperature sensor. It is under right side air cleaner cover and it has a purple and a brown/black wire attached to it. Check to make sure the wiring has not been tampered with.
 
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