Author Topic: Classic 500, 722 km, failing fuel pump when hot.  (Read 3874 times)

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Beeza

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Reply #15 on: November 15, 2023, 04:54:02 pm
Just to be clear, the starter turns the motor over but it fails to fire. Or the bike doesn’t respond to the starter button. Which?

Or the fuel pump doesn’t run after the key is turned. ??


gizzo

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Reply #16 on: November 15, 2023, 10:47:47 pm
It'd be interesting to see if you could make it start under that condition by pouring a little bit of fuel down the plug hole.
simon from south Australia
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Haggis

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Reply #17 on: November 15, 2023, 11:27:05 pm
Surely just take the plug out and see if it's sparking?
Off route, recalculate?


Hans

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Reply #18 on: November 18, 2023, 10:04:12 am
As I was curious why a new (722 km ) pump would fail, so I cut the pump open, and was very surprised to find shattered magnets. Why that would be more of a problem after parking in the sun beats me. The bike is running quite ok now.


gizzo

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Reply #19 on: November 18, 2023, 09:30:26 pm
That's interesting.

Maybe your pump was assembled in the same Dickensian nightmare as these bearings....
https://youtu.be/OL5yAu18A3k?si=LYH2qHFIvX1gP_hh
simon from south Australia
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the possum

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Reply #20 on: November 19, 2023, 11:39:25 pm
Hans,
please supply the details of the Honda fuel pump you fitted - part No. etc, and a pic if possible.


Hans

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Reply #21 on: November 20, 2023, 04:30:37 am
The pump I fitted was for a Honda Wave 110i, new model. I am not savy enough to send pictures. It is a pump that is also used for Honda Vario and Honda Beat, Maybe it is best if you take the pump out of the plastic housing, and compare the pictures. On the suction side it has three tabs and an offset inlet. I saw too late that I could have ordered a Keihin pump for very little money as well. Think around six dollars. I have a Chinese clone fitted now, and for now it is working better then the original has ever done, and for more miles as well..
As I was very unsure, about fitting and quality, I ordered a spare one as well.
I first ordered a pump that was supposed to be for an Euro 4 Enfield, more expensive of course, but that one did not fit at all.
I was a little overwhelmed when I started on this job, but, taking my time and watching a batch of youtube clips, I have to say that in the end it was not not particular hard. I spent some time on removing the quick(?) release connector from the fuel line to the pump.Beware, you do not want to damage that (!). In the end I used a needle pliers, and taped two M6 nuts opposite each other on the ends of the pliers. With these I could compress the two tabs and pull the line of the spigot. It is my understanding that some connectors release easy and some are more tricky. but anyways, take care and take your time.


Hans

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Reply #22 on: November 20, 2023, 07:27:00 am
Not the best quality, I hope it is ok.


Hans

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Reply #23 on: September 01, 2024, 09:58:04 am
After a bit of an unlucky start with the Enfield, having problems with the fuel pump, and having to sort out the shims at the rear wheel, I almost feel like I need to apologise for my critical attitude, as the bike performed flawless after that now for 10.000 km in a year.
The vibrating, a bit worrisome at the start, disappeared mostly, and no problems at all for the rest.
No loosening bolts, nothing broken, ( well, a rubber battery band last week..), frugal on fuel, and, most important, a pleasure to ride !
Trying to find excuses to take it for a spin.
Also, after initial issues with tightening and aligning the chain, no need to adjust it after that. I clean and oil the chain very regularly of course.
All in all, I am very happy with the bike now !


Mad4Bullets

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Reply #24 on: September 02, 2024, 07:15:31 pm
All in all, I am very happy with the bike now!

Another enchanted owner. Who could have predicted it? I wish you many happy kilometers, Hans.