Question about 1993 Honda CBR 1000 F
I have a 1993 CBR 1000 with about 60,000 miles on it.
In the last 6 months, it has become harder and harder to start when the motor is cold. Battery and starter seem ok. Once it starts, it runs good.
Since this started happening my gas mileage has gotten worse as time goes by. Now it does't want to start at all. It cranks like it wants to start, but doesn't. I can smell gas from pumping the throttle so much.
Need to start w/ a tune -up and diagnostic to start eliminating potential causes. 1st take off tank, & remove plugs and do compression test. should have 149-206 psi in each cylinder, have throttle wide open as you crank motor for test.next take valve cover off and check valve tappet clearance,intakes .003"-.005",exhausts.006-.008,adjust as needed by reshimming to specs.reinstall valve cover w/ new gasket.replace spark plugs w/ new ngk dpr9ea-9 plugs w/ gap set at .031"-.035" next check air cleaner & box clean or replace as necessary. make sure fuel is fresh and that you have fuel to all carbs by opening fuel drain screw at bottom of bowls to check for fuel in bowls.make sure all spark plugs are firing also by connecting to cap & cranking motor as you hold plug to ground on motor or frame, one at atime, to avoid potentially harming cdi box always have plug grounded to bike when cranking motor. if all this checks out ok or is brought back to specs.,and still running bad or wont start, carb. set should be taken off & inspected,cleaned,repaired as needed, reinstalled on bike, and synchronized w/ vacuum guage set.
Posted on Feb 20, 2009
Sparkplugs. That will fix it.
You can choose between 3 types the normal the cold and the hot (performance) sparkplugs. The normal for medium temperatures is the best, the cold is suited for bellow 5º C temps. And the hot is for hot weather and performance usage.
Hope that helps.
Posted on Feb 20, 2009
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Apr 27, 2011 | 1996 Honda CBR 600 F(3)T
Sep 11, 2010 | 1989 Honda CBR 600 F Hurricane
Apr 14, 2010 | 2008 Honda CBR 1000 RR Fireblade
Apr 06, 2010 | 1988 Honda CBR 400
Nov 01, 2009 | 2004 Factory bike Chrono SM 250
Apr 25, 2009 | 1993 Honda CBR 1000 F
Feb 27, 2009 | 1993 Honda GL 1500 Aspencade Gold Wing
417 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: