bike is in the shop, with more problems

99ZX7R · 10-24-2006

droped the bike of a couple of weeks ago, the bike just turned 16,000 miles, it definetley needed a valve adjustment, while it was there I asked them to clean the carbs, the bike started sputtering a few days prior to taken it in.. so they called to say they have done both, but they cant figure out why the bikes makes no power from 4k to 8k rpms after that the power is there.. I noticed this too, I thought it was a combination of the valves and carb cleaning.... anyone here have any idea's on what could cause this?? I would like to give him a call with some suggestions..

QKENUF4U · 10-25-2006

has he played with the needle in the carb to richen it up a bit in the mid-range ? could be an electrical problem, could be a fuel problem let us know if they figure it out

99ZX7R · 10-25-2006

well, they told me when they cleaned the carbs they had to pull out the plugs on the mixture screws, I asked them if there was an after market jet kit, or even checked to see if the needles and needle jet were worn.. they said they never checked, I said if you had to remove the plugs, that should threw up a red flag! so they are going to first do a compression check, check the ignition, before the get back into the carbs.. so, I dont even want to ask how much this is going to cost.. probaly a 1/3 cost of the bike

wiredgeorge · 10-25-2006

If your bike lacks power in the mid-range, I would not blame the problem on the removal of the caps over the mixture screws. The mixture screws primarily affect idle and just off idle. Have you modified the airbox or added an aftermarket set of pipes? You say the bike lacks power... has the jet needles been shimmed or reclipped? How about rejetting? Has that been done? Also, check any inline gas filter to ensure it has been recently changed and that the gas line isn't kinked. Last, I would measure valve clearances to ensure that they are within spec. You don't have to remove the cams to do this; only remove the valve cover. Buy a set of feeler gauges that can accomodate the small clearances on your bike... Sears sells this type feeler gauge with the smallest blade at .051mm.

RomSpaceKnight · 10-25-2006

You say you dropped bike. What side? Could be some ignition component could have got damaged.

10-24-2006	#1 (permalink)
99ZX7R Still On The Kickstand Join Date: Dec 2005 Posts: 29	bike is in the shop, with more problems droped the bike of a couple of weeks ago, the bike just turned 16,000 miles, it definetley needed a valve adjustment, while it was there I asked them to clean the carbs, the bike started sputtering a few days prior to taken it in.. so they called to say they have done both, but they cant figure out why the bikes makes no power from 4k to 8k rpms after that the power is there.. I noticed this too, I thought it was a combination of the valves and carb cleaning.... anyone here have any idea's on what could cause this?? I would like to give him a call with some suggestions..

10-25-2006	#4 (permalink)
wiredgeorge Vintage Motor Mechanic! BTK Expert Join Date: Oct 2004 Posts: 507	If your bike lacks power in the mid-range, I would not blame the problem on the removal of the caps over the mixture screws. The mixture screws primarily affect idle and just off idle. Have you modified the airbox or added an aftermarket set of pipes? You say the bike lacks power... has the jet needles been shimmed or reclipped? How about rejetting? Has that been done? Also, check any inline gas filter to ensure it has been recently changed and that the gas line isn't kinked. Last, I would measure valve clearances to ensure that they are within spec. You don't have to remove the cams to do this; only remove the valve cover. Buy a set of feeler gauges that can accomodate the small clearances on your bike... Sears sells this type feeler gauge with the smallest blade at .051mm. __________________ wiredgeorge Texas Hill Country

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Ways to drop your motorcycle	Freakinout	Main Lobby	174	10-14-2009 02:58 AM
Bike problems....or lake of rider intelligence	colinb93rs	Vintage Motorcyle Info	60	03-13-2008 06:51 PM
HOW TO PICK UP YOUR BIKE!!	NinjaGirl	Ladies Only	1	09-26-2006 09:46 PM
I got a new bike!	windrider18	Ladies Only	26	08-18-2005 10:53 AM

10-25-2006	#2 (permalink)
QKENUF4U AZ's Official Mechanic BTK Expert Join Date: Sep 2004 Location: lake havasu city arizona Posts: 4,551	has he played with the needle in the carb to richen it up a bit in the mid-range ? could be an electrical problem, could be a fuel problem let us know if they figure it out

10-25-2006	#3 (permalink)
99ZX7R Still On The Kickstand Join Date: Dec 2005 Posts: 29	well, they told me when they cleaned the carbs they had to pull out the plugs on the mixture screws, I asked them if there was an after market jet kit, or even checked to see if the needles and needle jet were worn.. they said they never checked, I said if you had to remove the plugs, that should threw up a red flag! so they are going to first do a compression check, check the ignition, before the get back into the carbs.. so, I dont even want to ask how much this is going to cost.. probaly a 1/3 cost of the bike

10-25-2006	#5 (permalink)
RomSpaceKnight Uncle Bob's Love Child BTK Intermediate Join Date: Sep 2006 Location: London, Ont. Canada Posts: 253	You say you dropped bike. What side? Could be some ignition component could have got damaged.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)