Hi everyone, new to the forum and recently got back into bikes after a 4 year break, hopefully someone can help with my fuel issues.
Basically the bike was stood for 3 months before i bought it cheap as it needed a new relay assembly soldered in.
It has been starved of fuel almost the whole time i have owned it, i spent a lot of time cleaning the points on the pump and it didnt make any difference :s
On the morning i took it for its MOT miraculously it ran fine, revved right through the range, smooth power delivery and really quite pleasant to ride.
On the way back from passing its MOT it was running rough, felt starved and was seriously down on power (3.5K pull aways!) and a mile from home blew the ignition fuse
On my last bike (Bros 400) i had several bad fuel pumps and it feels like this on the Divvy.
I have just checked and fuel is flowing freely out of the Tank.
Here is a video of how much fuel is currently flowing through the filter -
My question is do you think i just need to replace the pump or could something more serious be on the cards?
Thanks for any help, i really want it to run for the long weekend ahead!
Patrick.
Last Edit: Apr 26, 2011 20:22:35 GMT by dieselpug09
take off pipe after filter and check fuel flow ,should fill a mug within a min , if it spurts in stages like vid i say theres a blockage or pumps knacked high resistance (Overcurrent) blows fuses see if any shits in pump
take off pipe after filter and check fuel flow ,should fill a mug within a min , if it spurts in stages like vid i say theres a blockage or pumps knacked high resistance (Overcurrent) blows fuses see if any shits in pump
There was plenty of fuel coming out of the tank last night so the problem must be the pump :s
Carbs next methinks..... try a shed load of redex initially.....
I was hoping to avoid touching them! my brother in law mentioned bowls and floats and all sorts when i spoke to him about this, time to dig out the Haynes and do some serious head scratching
Hi. My XJ600 died on me and the mechanic told me the fuel pump is to blame. He told me I had to replace it but according to him new one costs over 250£. I've seen the repair kit from wemoto, and I think I can fit it myself. Is there a chance this won't solve the problem and I still need a new pump?
ruimarto, don't know the age of your bike so it might have either the old vacuum fuel pump or the later electric one. Anyway, read the attached document, courtesy of our very own Greeny. It shows how to swap an old vacuum one for an electric one. Then look on Ebay: shop.ebay.co.uk/i.html?_from=R40&_trksid=p5197.m570.l1313&_nkw=diversion+fuel+pump&_sacat=See-All-Categories .... for a replacement & have a go yourself. £250 is nonesense money .
My bike is from 1995 but it was recalled by Yamaha to replace the vacuum pump for an electric one.
About the price, if you go to the link below, and click on part 44 (fuel pump) you'll be redirected to a russian site that shows a 360€ price tag (there's a menu on the right side to change currency). It's exactly the same my mechanic showed me, so I don't think he was trying to fool me. He even suggested to use a Thundercat 600 pump, which is cheaper (about 280€).
.... Can the bike run by gravity, just to bring it home (about 10 miles)?
Yes, it should manage that OK. I wasn't suggesting your mechanic was telling stories, but as the prices are a bit extreme for older bikes, I'd pick a secondhand one up from a breakers or Ebay. Actually the ones on Ebay seem a bit pricy at the moment. If you don't need the bike right away, I'd hang on a bit & see what comes along. But if you need it, then it's wallet-out time . Why not send a PM to member daniel3640, who is currently breaking a 1998 bike: diversionclub.proboards.com/index.cgi?board=forsale&action=display&thread=14167 He hasn't listed the pump but may have just overlooked listing it.
Carbs next methinks..... try a shed load of redex initially.....
I was hoping to avoid touching them! my brother in law mentioned bowls and floats and all sorts when i spoke to him about this, time to dig out the Haynes and do some serious head scratching
Hi Diesel, before ripping the carbs off, throw a bottle (a whole bottle!) of Redex in the tank with half a tank of fuel & take it for a ride or run it for 10 minutes parked-up, see if it helps. (Taking it out for a run is much preferable). It's certainly improved running on a couple of old bikes I've fettled in the recent past.
But if your replacement pump has given you a nice fuel flow but symptoms remain the same, it might not be fuelling at all. A few months layup just doesn't clog up carbs - many riders park-up their bikes over winter & they certainly don't strip the carbs each Spring. Fuel is stable enough to cope with longer than that. So don't get so bogged down with the fueling side that you ignore other things. When the bike is running, are all downpipes nice & hot? If any are runnning cooler it might confirm fueling or it might point to a dodgy coil. Swap the coils over & see if a different pipe runs cooler.
......the blown fuse makes me wonder if a dodgy connection is responsible . Worth looking for every electrical connector you can find, unplugging, giving a clean, spray, & re-connecting.
.... Can the bike run by gravity, just to bring it home (about 10 miles)?
Yes, it should manage that OK.
I called the mechanic and he told me it won't work because the thank is too low. Tows are quite expensive, so I might just start banging my head against the wall...
About the pump, you think it's better to buy an old one from eBay or other users, than buying a new one for 90£? I use my bike a lot (about 17.000 miles per year), so I'm not sure about buying a pump that might fail again soon.
.... I called the mechanic and he told me it won't work because the thank is too low....
Hmmm. I've rigged up gravity-feed temporary tanks when fettling bikes, & only rested the tanks on the bike frame - once running, the carbs suck through & help gravity anyway.
See bodgetastic temp tank ( pop bottle) here for illustration: ... it ain't very high, is it ? .... & it didn't even have a vent to avoid a vacuum in the bottle as fuel left it, so gravity & the carbs sucking through the fuel had to fight against the vacuum developing in the bottle. No probs, even revving quite high.
Good idea... I was getting desperate and was thinking about borrowing a friends Mitsubishi Canter. Just had to figure out how to put the bike on top and how to strap it. But that seams a lot easier!
Maybe a 2L Coke bottle tied on top of the tank will do the trick. Did that motorcycle also used an electric pump? What do I need exactly to pull that off? Any kind of connector? How does the tube connects do the carbs? I've googled it but no luck (maybe googled the wrong terms) and I don't have my bike to look at it and try.
I must confess I feel kind of stupid. I've studied mechanical engineering, won two SAE awards, but in this kind of situation I feel completely worthless.
.....Maybe a 2L Coke bottle tied on top of the tank will do the trick.
NO! Don't try it on the road. It's not safe. The point of my reply was to show that the standard tank is not too low to allow a gravity feed, so just bypass the dodgy pump/.
With your Diversion tank, bypass the pump by joining the pipes either side of it together (or replace with a new single lentgh of fuel pipe (that's what I'd do) then switch your fuel tap to 'on' if that was replaced when your fuel pump was changed to electric, or to 'prime' if you still have the old fuel tap on the tank. Then wait a few minutes for the carbs to fill & try starting the bike.
One of our number (Brandane) had his Fazer temporarily repaired like this by a breakdown man. I think he completed the Normandy run by just keeping the tank well topped up
It's just 10 miles... but ok. So I just need to get a 30cm hose? And what kind of hose is it? I've seen 1/4 barb connectors for fuel lines around the net. Are those the same as the connectors on the bike?
My divy is home! Found out that I have multiple travel assistances, one from the bike insurance, other from my bank and other from my Euro26 Youth Card. Each one gives me one free tow service.
I finally got to the bottom of this after buying a new coil (2 & 3), which didnt get it running right! So i bought a multimetre and followed the power supply for that coil and low and behold found some rather melted, frayed and exposed wiring!
Bike is running spot on now, it feels so good to be riding again after so long!
I thank you all as well, my Diversion is up and running again.
I bought that repair kit (fuel pump points switch) from wemoto.com which costs about 30£. I went into my garage and two hours later my motorcycle was running perfectly. It's very easy to replace that part. The hardest part was removing the tank because I was afraid to spill gas all over the place.
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. Worth looking for every electrical connector you can find, unplugging, giving a clean, spray, & re-connecting.
