well if you had a way to get a pipe from the pump - u could runs a litre or two and flush that side - never looked but I guess it runs round in a loop back to the tank - then you could do the same as now and run a bit of fresh out of the injectors, and try to see if it will start after that
Fuel + spark + air = no combustion
- Thread starter SimonSays
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SimonSays
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Just had it running! For the first time in too long it’s actually idling and running smoothly.
I’m not sure there was a single defining moment that resolved the issue in the end… FWIW, I’m fairly sure the underlying issue was a gummed-up fuel system somewhere between the pump output and the throttle bodies. Obvious in hindsight but the sudden one-day-it-runs-one-day-it-doesn’t threw me off that conclusion to begin with.
After testing the injector spray in the posts above, it was really only running on the left cylinder… putting a can of injector cleaner additive into about 2l of fresh fuel, running it through, letting it sit, running it through, letting it sit a few times has finally got it going. Now for 5l of 98 Unleaded to dilute down the additive/fuel mix and make sure I run it dry next time it will sit for a while!
While it was in bits I’ve taken the opportunity to replace the fork seals and oil and both were weeping - one was an absolute sh*t-show and had obviously rusted from water ingress. Oil was black and the fork seal wouldn’t come out without heating the top of the tube up to release it. Final drive will get new oil and grease as well. I’ll be very happy if the old girl gives me a few more miles!
Thanks
I’m not sure there was a single defining moment that resolved the issue in the end… FWIW, I’m fairly sure the underlying issue was a gummed-up fuel system somewhere between the pump output and the throttle bodies. Obvious in hindsight but the sudden one-day-it-runs-one-day-it-doesn’t threw me off that conclusion to begin with.
After testing the injector spray in the posts above, it was really only running on the left cylinder… putting a can of injector cleaner additive into about 2l of fresh fuel, running it through, letting it sit, running it through, letting it sit a few times has finally got it going. Now for 5l of 98 Unleaded to dilute down the additive/fuel mix and make sure I run it dry next time it will sit for a while!
While it was in bits I’ve taken the opportunity to replace the fork seals and oil and both were weeping - one was an absolute sh*t-show and had obviously rusted from water ingress. Oil was black and the fork seal wouldn’t come out without heating the top of the tube up to release it. Final drive will get new oil and grease as well. I’ll be very happy if the old girl gives me a few more miles!
Thanks
Good news! Well done.
Good news indeed.
There is very little fuel in the fuel system after the pump except in that stupid lifetime fuel filter.
Some of us on here have by passed that filter and fitted a remote one.
That (Lifetime) filter could have held a fair amount of bad fuel.
There is very little fuel in the fuel system after the pump except in that stupid lifetime fuel filter.
Some of us on here have by passed that filter and fitted a remote one.
That (Lifetime) filter could have held a fair amount of bad fuel.
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