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August 2nd, 2018, 02:20 AM   #11
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Lancer, it may be a faulty TPS if the adjustment makes no difference
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August 2nd, 2018, 04:35 PM   #12
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Guys, AliExpress have ultrasonic cleaners pretty cheap.

https://www.aliexpress.com/item/Free...ceBeautifyAB=0
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August 3rd, 2018, 01:56 AM   #13
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Originally Posted by Alan View Post
Lancer, it may be a faulty TPS if the adjustment makes no difference
Hey Alan......I can adjust the position of the TPS and the voltage changes which tells me the TPS is working. I am fairly sure the problem is fuel related as it'll fire straight up after the engine is shut down and started again within a few secs...Wait a minute and it'll take 15 - 20 secs to get it going. Whilst cranking the engine tries to start and it seems like it's building up fuel pressure before it'll start.

Once it's running it runs fine and doesn't miss a beat nor is it lacking...anywhere!!

We have a guy here with a 390 and he just blips the starter and it starts right up so there is something not right with mine

I have the filter kit on order and am waiting for it to arrive then I'll get to work and see what I can find and I'll post the results when I have it sorted
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August 3rd, 2018, 02:15 AM   #14
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Sounds like it could be a pressure issue. Id have a look at the spray from the injector.
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August 3rd, 2018, 05:53 AM   #15
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Could be that your fuel pump is getting weak or lost its seal/prime
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August 3rd, 2018, 05:58 AM   #16
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Try just tapping starter button for a 1/2 second. Do this multiple times. Then try to start. If pump has cycled enough to warm up then bike should start easy.This will tell you if pump is dying. Running low on fuel makes the pump heat up too much which shortens its lifespan.
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August 4th, 2018, 01:58 AM   #17
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Thanks for the input....When I tap the starter the pump runs as it's supposed to. I'll pull the pump out and check it when I get the filter kit and I'll check and clean the injector

I'll let you know what I find
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August 20th, 2018, 01:28 AM   #18
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The filter kit finally arrived today so I got to work and pulled the fuel pump, filter and screen out. I never really had to pull the filter all the way out before I could see what the problem was. The fuel filter was black and discoloured and was chockers with fine black silt. The date on the filter was 2012 so it had been in there a while!!!

I looked for the small inline filter which sits inside the fuel hose quick disconnect or the fuel rail inlet but wasn't in there......It must have choked up and had been removed and not replaced so I also ultrasonically cleaned the injector and back-blew a heap of black crap out of it also.

Now it starts straight up like it's supposed to and I am looking forward to seeing how it runs on a ride.

Anyhow I have ordered a spare filter on ebay at a fraction of the cost and will change it on a regular basis now
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FE570 Hard Starting-20180820_175700.jpg  
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August 20th, 2018, 04:42 AM   #19
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You are in for a pleasant chock now when the engine is not starved anymore
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September 19th, 2018, 01:39 AM   #20
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I thought I'd put up a quick update to let you know what I found after a few hours riding......

After replacing the filthy filter with the genuine filter/screen kit and ultrasonic cleaning the injector the engine was a lot easier to start until I took it out and gave it a decent ride and the hard starting was back almost as soon as I went to start it again....

I had a few guys tell me to clean the injector with it open (energized) which I hadn't done when I did it before. So this time when I removed the injector I thought I'd make an adapter to energize it with a 9v battery to open it whilst it was cleaning. To my surprise I already had one which I had made to test small LCD displays. This time I took a closer look at the injector and found it had a small filter screen pressed into the injector inlet which I had seen but not paid any attention to what it really was.

BINGO.......I had cleaned the injector previously and the dirt was then trapped inside the injector and had no way of blowing it out. I did a bit of searching online and found the filter was quite easily pulled out which I did. Upon close inspection I found the screen was full of fine particles trapped in the mesh.

I bought a liter of injector cleaner, energized the injector and ultrasonic cleaned it for 30 mins. I then reverse blew it out whilst energized and then blew brake clean through it to check the spray pattern and was surprised how much better the fuel atomized compared to previously

My bike, a 2011 FE570, didn't have the inline filter in the quick disconnect so I bought the fittings and replaced them and fitted the filter and now carry a spare in my bum bag.

Starting it now is a breeze and it starts in a fraction of the time it did previously and pulls much stronger than before so I'm happy to say it's now fixed.

I thought I'd share this as I have read other guys having similar hard starting and I have not seen anywhere mention of an injector inlet filter.
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