HELP! Getting poor fuel mileage
#81
Ouch. I am no expert, but you have to start and learn somehow. I guess I should just load the bike up and take it to the dealer and drop a ton of money for them to work on it. Then again I think not, I will keep working on it and fix it myself. Its called learning and I will be more knowledgable next time I need to do it.
#82
brooksie, I think you may be giving the engineers too much credit on some of this. The airbox has to be designed with some serious compromises to EPA noise standards. It is not an optimum performance device. You don't have jetting nightmares by altering the opening, removing the backfire screen, trying different filters, etc., on our KLX's. You have jetting nightmares by not knowing how to jet the carb/engine...or perform the other mechanical steps involved in the jetting process.
You commented that some of these intake and carb mods only help acceleration and produce no power gains. How our bikes accelerate is kind of important to most of us.
You commented that some of these intake and carb mods only help acceleration and produce no power gains. How our bikes accelerate is kind of important to most of us.
Ouch. I am no expert, but you have to start and learn somehow. I guess I should just load the bike up and take it to the dealer and drop a ton of money for them to work on it. Then again I think not, I will keep working on it and fix it myself. Its called learning and I will be more knowledgable next time I need to do it.
#83
Look out boys....this b**** is ready to roll!!!!
I spent the evening in the garage and tore the bike all the way back down and took the carb off completely, pulled the plug and checked it was installed to spec and I had grabbed the correct one out of the cabinet (I also have plugs for and ST1300 and KLR650 in there). So here is my bit of advise as a rookie at working on a carb:
Check the diaphram is installed correctly before putting it back on the bike. Here is how to do that and how the slide should react...
GOOD 2005 Harley XL CV Carb Diaphragm - YouTube
If its not installed incorrectly, it will do this...
BAD 2005 Harley XL CV Carb Diaphragm - YouTube
Needless to say when I pulled my carb it reacted like the second video. I assume when I used a small pick to get the diaphram installed back in the grove the I thought I had got it right and it had actually kinked in and thus did not seal and create the vacuum needed.
Anyway, its back together and after a short mile ride down the road and back it seems it rips and roars with zero issues. I did install the kreiger manual tensioner also, I think it might need a slight adjustment to take up just a little slack left. Next nice day I have free I plan to take it out for a good 60 or so mile ride and see what kind of fuel mileage I get now. It might be a couple weeks before I get out to ride though, its kind of cold here.
I spent the evening in the garage and tore the bike all the way back down and took the carb off completely, pulled the plug and checked it was installed to spec and I had grabbed the correct one out of the cabinet (I also have plugs for and ST1300 and KLR650 in there). So here is my bit of advise as a rookie at working on a carb:
Check the diaphram is installed correctly before putting it back on the bike. Here is how to do that and how the slide should react...
GOOD 2005 Harley XL CV Carb Diaphragm - YouTube
If its not installed incorrectly, it will do this...
BAD 2005 Harley XL CV Carb Diaphragm - YouTube
Needless to say when I pulled my carb it reacted like the second video. I assume when I used a small pick to get the diaphram installed back in the grove the I thought I had got it right and it had actually kinked in and thus did not seal and create the vacuum needed.
Anyway, its back together and after a short mile ride down the road and back it seems it rips and roars with zero issues. I did install the kreiger manual tensioner also, I think it might need a slight adjustment to take up just a little slack left. Next nice day I have free I plan to take it out for a good 60 or so mile ride and see what kind of fuel mileage I get now. It might be a couple weeks before I get out to ride though, its kind of cold here.
#87
I'd seriously be happy to help you out. Its always easier to do when someone thats done it before is there to help guide you.
#88
Cool! I'll probably do the pipe/air cleaner after the first valve adjustment. I'm also interested in the cold starting cure. That's why I'm getting this bike so I can put the ZX away in November and thrash the KLX all winter. Great job on the bike. You have way more patience than I!!!!
#89
Cool! I'll probably do the pipe/air cleaner after the first valve adjustment. I'm also interested in the cold starting cure. That's why I'm getting this bike so I can put the ZX away in November and thrash the KLX all winter. Great job on the bike. You have way more patience than I!!!!
#90
Thanks Landon.
I just finished re-jetting my carb and wasn't sure I put everything back together correctly.
The slide went back together too easy.
Your videos were reassuring.
Seems I got it right.
Be well.
I just finished re-jetting my carb and wasn't sure I put everything back together correctly.
The slide went back together too easy.
Your videos were reassuring.
Seems I got it right.
Be well.