Occse Posted August 11, 2013 Share Posted August 11, 2013 I just wanted to start the season (I know it's quite late but I couldn't have time to fix that yet), I cleaned the carbs, new battery, new iridium plugs. It just didn't start, and I found that the fuel pump's electric switch part is gone. Have anybody changed it from here? I'ver found parts on ebay, but I don't know wheter it's 100% sure this will work with mine. http://www.ebay.com/itm/Fuel-Pump-Petrol-Pump-Repair-Kit-Honda-VFR-750-1987-1997-/200662062249?pt=UK_Motorcycle_Parts_13&hash=item2eb86414a9 Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted August 11, 2013 Member Contributer Share Posted August 11, 2013 grap a hole pump from a break yard. or just bypass the pump., you have a 3rd gen so you drive till the last drop as long ass you dont do 125 mph for more than 15 min.. that would be breaking the law,,and you dont do that ..DO YOU?? you MAY have to TURN OFF THE GAS IF YOU DO THIS. depends on how nice your carbs are if they will leak with constant pressure when parked. Link to comment Share on other sites More sharing options...
Occse Posted August 11, 2013 Author Share Posted August 11, 2013 grap a hole pump from a break yard. or just bypass the pump., you have a 3rd gen so you drive till the last drop as long ass you dont do 125 mph for more than 15 min.. that would be breaking the law,,and you dont do that ..DO YOU?? you MAY have to TURN OFF THE GAS IF YOU DO THIS. depends on how nice your carbs are if they will leak with constant pressure when parked. Thanks, but I believe japanese engineer thought about this for quite a long time, how to create this masterpiece. They were thinking about undestroyable creatures that time, not like now. (They just studied, like any other manufacturer, that making too reliable things, is not worth it.) By the way, any comments on the parts I linked are welcome! Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted August 12, 2013 Member Contributer Share Posted August 12, 2013 you are right.. but you forget the fuel pump is for HIGHSPEED.. its NOT needed unless your are driving like a nut. it a not an uncommon mod and WILL NOT hurt your bike. the fuel pump has been OFF of my 86 vfr since 1990.. and its STILL running like a top! Link to comment Share on other sites More sharing options...
VFRBert Posted August 21, 2013 Share Posted August 21, 2013 Driving for a longer time without pump is a risk for the bike, even at lower speeds fuel level in the carbs is to low, wich means driving on a lean mixture, wich means higher temperatures in the engine. The part from Ebay solves the problem. Link to comment Share on other sites More sharing options...
V4 Rosso Posted August 21, 2013 Share Posted August 21, 2013 By the way, any comments on the parts I linked are welcome!It sure looks like the switch assembly needed to replace a switch with worn contact points. Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted August 22, 2013 Member Contributer Share Posted August 22, 2013 Driving for a longer time without pump is a risk for the bike, even at lower speeds fuel level in the carbs is to low, wich means driving on a lean mixture, wich means higher temperatures in the engine. The part from Ebay solves the problem. so explain why my 86 has perfect dark tea colored plugs? thats 23 YEARS with a 4 into 1 pipe and jetted properly. Link to comment Share on other sites More sharing options...
VFRBert Posted August 23, 2013 Share Posted August 23, 2013 Maybe we are driving at higher speeds in Europe. Higher speed limits and no speedlimits on the German autobahn. I have driven long distances 200 + (75 km non stop for example) without a fuel pump gravity fed, the carbs do not get enough fuel. And i have the experience, that it is impossible to use all the fuel in the tank without the pump connected. Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted August 24, 2013 Member Contributer Share Posted August 24, 2013 Maybe we are driving at higher speeds in Europe. Higher speed limits and no speedlimits on the German autobahn. I have driven long distances 200 + (75 km non stop for example) without a fuel pump gravity fed, the carbs do not get enough fuel. And i have the experience, that it is impossible to use all the fuel in the tank without the pump connected. uh NO. on the 90 ,the petcock is mounted at the VERY BOTTOM OF THE TANK. all the gas will flow out. and i have driven coast to coast USA with ZERO problems .. averaging about 85mph.. like i stated in my 1st post unless its doing 125 for over 15 min.. it wont have any problems. Link to comment Share on other sites More sharing options...
VFRBert Posted September 3, 2013 Share Posted September 3, 2013 Maybe we are driving at higher speeds in Europe. Higher speed limits and no speedlimits on the German autobahn. I have driven long distances 200 + (75 km non stop for example) without a fuel pump gravity fed, the carbs do not get enough fuel. And i have the experience, that it is impossible to use all the fuel in the tank without the pump connected. uh NO. on the 90 ,the petcock is mounted at the VERY BOTTOM OF THE TANK. all the gas will flow out. and i have driven coast to coast USA with ZERO problems .. averaging about 85mph.. like i stated in my 1st post unless its doing 125 for over 15 min.. it wont have any problems. How about 75 mile doing 135. I need the dammed fuelpump for my trips in Germany Link to comment Share on other sites More sharing options...
Member Contributer CasualSwede Posted September 3, 2013 Member Contributer Share Posted September 3, 2013 Maybe we are driving at higher speeds in Europe. Higher speed limits and no speedlimits on the German autobahn. I have driven long distances 200 + (75 km non stop for example) without a fuel pump gravity fed, the carbs do not get enough fuel. And i have the experience, that it is impossible to use all the fuel in the tank without the pump connected. uh NO. on the 90 ,the petcock is mounted at the VERY BOTTOM OF THE TANK. all the gas will flow out. and i have driven coast to coast USA with ZERO problems .. averaging about 85mph.. like i stated in my 1st post unless its doing 125 for over 15 min.. it wont have any problems. On my '95, the carbs starve and the bike dies at about 80 mph with as much as 5 litres (1.3 gallons) left. To ride it any further, I can only manage ~50mph. Found this out the hard way in the middle of Idaho. Link to comment Share on other sites More sharing options...
Member Contributer gll429 Posted September 4, 2013 Member Contributer Share Posted September 4, 2013 Maybe we are driving at higher speeds in Europe. Higher speed limits and no speedlimits on the German autobahn. I have driven long distances 200 + (75 km non stop for example) without a fuel pump gravity fed, the carbs do not get enough fuel. And i have the experience, that it is impossible to use all the fuel in the tank without the pump connected. uh NO. on the 90 ,the petcock is mounted at the VERY BOTTOM OF THE TANK. all the gas will flow out. and i have driven coast to coast USA with ZERO problems .. averaging about 85mph.. like i stated in my 1st post unless its doing 125 for over 15 min.. it wont have any problems. On my '95, the carbs starve and the bike dies at about 80 mph with as much as 5 litres (1.3 gallons) left. To ride it any further, I can only manage ~50mph. Found this out the hard way in the middle of Idaho. wow.. there is something else going on there then..either to small a line or a pinched hose.. Link to comment Share on other sites More sharing options...
Member Contributer YoshiHNS Posted September 4, 2013 Member Contributer Share Posted September 4, 2013 One of the guys overseas with his frankenviffer was running gravity feed, at the track. Couldn't use the whole tank, but no problems at WOT. Guess I'll leave it at gravity feed working in a pinch. Lots of the honda carbed bikes should have the same fuel pump. Actually, my track F2 doesn't have a fuel pump. Link to comment Share on other sites More sharing options...
Member Contributer JZH Posted September 4, 2013 Member Contributer Share Posted September 4, 2013 Ummm... Guess what part the high-speed, race-bike-with-lights VFR750R RC30 does NOT share with the road-going VFR750F? (Hint: Isaac Newton could have been an HRC engineer!) Ciao, Link to comment Share on other sites More sharing options...
Member Contributer Dutchy Posted September 4, 2013 Member Contributer Share Posted September 4, 2013 Gravity!!!!!! (I use this image to explain to sales how target setting works....) Link to comment Share on other sites More sharing options...
Occse Posted September 4, 2013 Author Share Posted September 4, 2013 Pump works with a replaced part from ebay for $25. Now the starter relay s*cked.... Link to comment Share on other sites More sharing options...
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