Hey Guys - I'm new here and could really use some help. I have an 02 800 with just over 21,000 miles and last time I was riding it started sputtering. I limped home, a couple blocks. And now when I try to start it, it doesn't make the front cylinders hot (touch the exhaust test). It acts like it's not getting spark. But when I pulled the coils to check spark, it gets a big spark. Has anyone had this issue and found a solution? Here's a list of the things I have done to try and fix it: 1. Cleaned injectors 2. Checked, cleaned battery ground 3. Checked, cleaned wiring harness ground 4. Checked per manual, for 12V (or whatever battery has) at coil(s) 4. Checked for spark, strong spark 5. Switched rear injectors with front 6. Cleaned wiring harness connectors I am at a loss. Any help would be appreciated!
Stop throwing spaghetti at the wall and actually diganose it? Download the manual from this or another VFR forum. You need air, fuel, and spark. Start there. If you got some crap gas, which is unavoidable in the states, you can have all kinds of running problems. Did you buy crap gas in the middle of the night in the bad part of town?
Hey Bmart- Thanks! I did go through the service manual process of trouble shooting the issue to try and "diganose" it. And since the process failed to bring any solutions, I tried throwing the spaghetti. This also didn't work. So I thought I'd ask if anyone had experienced the same issue and found a solution they could share. It appears you have not. I do appreciate however you talking the time to me like I'm an idiot. It makes me feel all squishy inside. Like I could just reach out and give you a hug for your help.
There are some very knowledgeable people with that generation VFR that will come along that are great at helping trouble shoot non-common problems. I'm just a carb guy, but it sure sounds like you are not getting power to the front injectors. Did you verify that? That's all I got really. Good luck! You'll figure it out.
"Just in from F-book..." Seriously? Your subject tells us nothing. You don't even smirk at a spaghetti joke? Lighten up...we don't work for you. We're not your kids. We're free ($150/hour at a dealer) help and camaraderie, and we certainly goof on each other. You may be an idiot, but I certainly didn't insinuate that. Try to go to a new place without throwing your fists around if you want help from people. Sheesh... I've heard about this new method for getting on with others as part of millennial training school...but I haven't seen any success stories yet. Again, look at air, fuel, and spark. Find out what is missing and work backward until you find the culprit. Then maybe we can go on a ride together for that hug.
You mentioned you're getting a spark, is that at the spark plugs? I'll assume yes. Does the engine sound normal while turning it over? Have you had the cylinder head cover off? Does the valve train seem ok? Is there any way of knowing the front cylinders are getting fuel? I'm not a mechanic, and these machines are normally bulletproof. Might visit your local Honda shop to speak with the advisor if nothing else works. It could be some kind of sensor or relay. I hope you get this figured out.
A couple of questions! - Do you hear the Fuel Pump prime at every Ignition Switch ON? - What is the status of the Fi Light? Does it go out after Fuel Prime? Does it remain ON? Does it flash a code - Sidestand down? - Does the Starter crank the engine over at a normal rate? - As bmart has suggested, could you have picked up a bad load of Fuel, particularly if its Ethanol blended stuff? - What is the age and health of your battery? Are your terminals clean and tight? - Have you or are you able to confirm your charging system voltage? Any doubts about your battery, charge it then take it to an Auto Parts supply store and have it load tested. Diagnosing ANY suspected Electrical fault you need to start with a Known Good Battery. Have a very close look at your Main Fuse B 30amp. Check if the fuse and its wiring and inline connector are all in good shape with NO sign of heat stress or burning. Check the main Red Connector to your Starter Relay, the Red wire coming from Main Fuse A 30amp (in the Starter Relay) can suffer from heat stress and poor high resistance contact. Check your airfilter, perhaps a rodent has built a nest in there, starving airflow! Good Luck.
I'm on my 2nd vfr800, and this one has 40k miles on it. On my first few rides, I had my FI light flashing upon key on ignition and start switch depressed. Weirdly enough, turning the key to off, turning on the high beams and then turning key back to ignition would give me the familiar injector priming noise and proper start up. Then one night I had the bike turn off on me while in 2nd gear stopping at intersection. I thought I had glove fumbled and hit the stop switch ham handedly (turns out wasn't the case). This time it had just been the simple fact that my battery terminals weren't snugged up (idk what issue the previous owner had with the battery terminal ends but they were bent on the positive lead to where I had to remove battery and with vice grips bend it back into the familiar shape (was basically making slim to some contact, which would explain the intermittent starts, and the cut off approaching intersection was likely due to rattling from the train tracks I'd crossed prior to). I found this out when I ran voltmeter across terminals to find battery was still juiced. When I put clamps on the terminals from lithium jump box, I noticed immediately the loose positive lead. Now here's where it gets a little funnier. I notice radiator fluid leaking, I look to see that although the bike had obviously never been laid down at speed, it being top heavy as it is when full on gas, previous owner must have done what exactly I did when I was refamiliarizing myself with some low speed maneuvering in parking lot, realized this thing was going down, and I'm not going to pull my back trying to keep it from a few scratches etc. So I basically cradled the bike and rested it as slowly as I could onto the pavement, before catching breath and nerve to deadlift back upright. Clutch lever bent terribly. No other damage noted. Except coolant leak got worse. I garaged the bike and ordered another radiator as the left original had been damaged by a bend in rad fan rubbing the fins until leaks happened. The fan is still bent, but I've shimmed it enough til I do a replacement fan mod type of fix. While fairing was off, I was just checking out the electrical wiring down from the rad fan where it met under an inverted menstrual cup looking weather guard and behold. There was a connector that I can only assume was the kick stand switch wire because after I firmly reconnected the two ends under that cup the bike has started everytime no problem. Doesn't hurt to check the most basic of basics too. Reading the forums I went straight with probably the wiring harness recall or whatever, but my curiosity and love for this model made me go through the motions to great success. TLDR; - check battery terminal for snugness - check kickstand switch connector under left fairing (inside the little diva cup wearherguard) On mine this weatherguard had gotten hazy due to age and roadwear/grime, short of peeling it up a bit I would have missed the connector which was just barely hanging together, thus making for a baffling (to me anyway) series of loose connections that was making for such intermittent starslts and even downright bike turning off while running) Hope that helps, sorry if it's noobish advice. I have only just started wrenching on cars and so if you've covered all what I discovered in my stumbling then hope another member can chime in to offer more productive advice. Don't lose faith in the vfr though, I never once lost confidence due to high mileage or whatever. If anything high mileage should inspire faith, it's made it thus far, the issue is probably just a combination of small problems, not a major fault in engine, hopefully. I drove 6 hours to pickup this vfr, I didn't think to ask owner selling why he had the fairings off (he must've been trying to dial in the same issues).
