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Post by De Graaf van Salland on Mar 29, 2009 20:38:48 GMT 1
Yesterday I fitted the replacement fuel pump to my bike. Here's a photo of the old & new pump: The pump can be purchased (in the Netherlands) at "Brezan". Their part number is: 160-QFP171E and it cost me about € 85,=. On the box I found the european distributor for this pump and they are in the UK: www9.qha.com/uk/default.htmI contacted them and a kind gentleman e-mailed me the technical data for the pump: Technical Information for QFP171E Fuel Pump is as follows: Fuel delivery - 85 litres/hour Pressure - 0.20 bar Suction Head - 0.06 bar Voltage 12 volt Fuse Required - 5 amp Because the pump has 8 mm attachments for the hoses, I had to modify the original fuel hoses. For this I purchased some clear petrol tube: outside diam. 11 mm & inside diam. 7 mm. This would fit over the 8 mm tubes of the pump and also inside the 10 mm original Honda tubes. This is what it looks like: Later this afternoon I made a testdrive, but I'm still not very happy: the engine was running on just 1 cylinder ! I can only think that a small bit of dirt has gotten into the petrol tubes and is now blocking one of the carbs.......... Ride safely Franklin
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Post by McF on Mar 29, 2009 21:20:49 GMT 1
As always Franklin, an excellent "how to" post, with photos.
At this rate Messrs Haynes and Co will be out of work!
A shame you're still having problems. It could be dirt in one of your jets, or float needle, but do check everything.
Your new pump looks an awful lot larger, those new pipes and connections are impressive!
It's difficult to tell accurately from the photo, but it looks as though the pump outlet pipe goes in a full circle, to join up just behind the fuel filter?
Are you happy that there are no air locks in the new pipe arrangement? I can see a few bubbles in the clear pipe just before it bends around towards the pump inlet.
As the feed comes out from the pump as a common pipe before splitting at the carbs, I'd assume any air locks etc would affect both carbs therefore keep looking at whichever cylinder isn't firing.
I hope you get it fixed soon and without too many dramas.
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Post by De Graaf van Salland on Mar 30, 2009 6:45:37 GMT 1
I'm not very happy with the lay out of the tubes. Airlocks is one of the problems. But I've seen yesterday that airlocks work their way out of the system. Buckling of the fule hose is a bigger problem. And I'm actually hoping that the new problem comes from fuel starvation due to a buckled hose. Anyway, I'm going to re-route the hoses before I tackle any dirt problems in the carbs.
Franklin
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Post by De Graaf van Salland on Apr 5, 2009 11:23:44 GMT 1
I re-routed the tubes & I'll post a photo of that later. But first I have to tackle a bigger problem: I have no ignition on my front cylinder. Please see the "help please" page.
Franklin
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Post by De Graaf van Salland on Apr 24, 2009 15:16:14 GMT 1
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Post by McF on Apr 25, 2009 7:39:51 GMT 1
Franklin I don't know what your day job is, but a new career as a motorbike technical author beckons you. Brilliant article, well written and supported by excellent photographs.
Messrs Haynes - stop snivelling, get some tissues and wipe away those tears, you are history ;D
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Post by Buzzin (^_^) on Apr 25, 2009 14:21:03 GMT 1
I agree, and it's writen in two languages I can understand!
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Post by De Graaf van Salland on Apr 25, 2009 18:20:14 GMT 1
I won't say anything about my day job, other then that I'm trying to find a different one.
I've been an amateur photographer since I was a small boy. I've worn out quite a few old-fashioned camera's (perhaps you can remember; they used to work with rolls of film. And it took ages before you could actually see your photo's). Now, of course, switched to digital.
The rest is due to my wife's company: she needed a website. That's why I did an evening-course on photoshop and dreamweaver.
All the rest (as they say) is history.
Franklin
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Post by paul 1 on Aug 29, 2010 13:05:08 GMT 1
on the old pump theres a hose pipe goes from the points casing whats this for and do you just disregard it in the new one thanks paul
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Post by De Graaf van Salland on Aug 29, 2010 16:10:13 GMT 1
I think that's the breather hose.
There's are a lot of sparks in the casing of the contact points, so Honda didn't want any build up of petrol vapour in that area. That's probably why they added a breather hose.
The new pump works without any sparks (so I read on another forum), so the breather hose isn't necessary.
GvS
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Post by De Graaf van Salland on May 14, 2011 7:36:01 GMT 1
I found a good video on youtube, that shown the sparks inside the fuel pump, when it's running: I'm actually a bit disappointed by Honda over this design: so many sparks & so close to petrol GvS
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alexdk
Restricted to 33BHP
Best regards Alex (the Dane)
Posts: 51
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Post by alexdk on Jun 13, 2012 7:24:53 GMT 1
Hi All I´m a new member from tiny Denmark.. I have a NTV 650 from 1989 and loving the bike.. I´ve tried to eliminate the "lightning" inside the pump with the help of a diode and afterwards starting the engine without problems (I did not take it for a ride).. Then the NTV held in the shed for 7-10 days until last night.. But when I tried to start the engine, it wouldent start (that has never happend before).. So I suspected the new diode ind the pump !! I went to the gas station, bought 20 L of fuel and filled the tank (i had driven 220 km on the tank).. And after I had poured 11-12 L into the tank, the NTV started rigth away :-) Of course I´m happy that my motorcycle is running again, but I´m the curios type, so I soldered the diode off again and drained the fuel tank the above mentioned 11-12 liters.. And the NTV started again (without the diode and with 11-12 L less fuel)... Okay that's a start :-) I then took the plastic top of the fuel pump and tried to start the NTV again.. again the engine starts without problems and I can see "lightning" inside the fuel pump (now the pump looks like the pump in GvS's video).. The thing that bugs me, is that now i´m back at the old setup (and its working).. but now i´m kind of nervous, because I havent corrected anything and I dont want to strand in the side of the road on the way back from work.. So is there a way to test if the fuel pump is working - I tried to put an extra fuel hose on the output of the fuel pump and test if the pump would deliver fuel ?? I did... (and thats another good thing :-) But i´m just wondering if i´m missing anything ?? Best regards Alex Ranch (Denmark)
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hairyuk
All Weather Rider, well hard
Posts: 155
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Post by hairyuk on Jun 13, 2012 10:24:44 GMT 1
hi Franklin regards the sparks in the pump ford motor company did something years ago to the ignition points in the ford fiesta i recall a what looks like a length of wire witch actually was some kind of resistor if i remember right it reduced the voltage to the points from 12v to 6 or 9 the idea was to stop the points burning or wearing out the su pump you have does also contain the points but i think its a twin set (double points) side by side so the spark issue is still present by the way the pump was fitted to many British leyland cars like the mini and Austin 1100/1300 4.2 jags have a similar pump fitted as well hope information was of some use mark
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hairyuk
All Weather Rider, well hard
Posts: 155
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Post by hairyuk on Jun 13, 2012 10:28:00 GMT 1
also meant to say if you can find some stainless steel springs that fit inside your petrol pipe it will allow the pipe to bend without kinking (squashing) mark
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alexdk
Restricted to 33BHP
Best regards Alex (the Dane)
Posts: 51
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Post by alexdk on Jun 13, 2012 11:41:54 GMT 1
Hi Mark Thanks for the reply.. i´m not that much into the electrical stuff, so I have to admit, that your answer is just confirming that my fuel pump is intended to make a spark.
But when I think about it, I can't recal how my input and output studs on the pump were positioned, when the NTV could NOT start.. (I recal to have read that the fuel input stud is suppose to be vertically higher than the pump output stud).. So perhaps my problem got solved after I positioned the fuel input stud higher than the fuel output ??
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