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idling
Jan 28, 2022 10:41:16 GMT 10
Post by Mark on Jan 28, 2022 10:41:16 GMT 10
Looking for ideas on idling. Can't get stationary revs under 1800. Balanced TB'S, showing 30 KPA, left one won't go below this. wound cable down, adjusted screws. checked tappets, air filter, air leaks around intake. ECU problem? I'm no mechanic, but would appreciate some feedback.
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oldmate
Plus co-pilot of 44 years
Posts: 236
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idling
Jan 28, 2022 11:52:12 GMT 10
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Post by oldmate on Jan 28, 2022 11:52:12 GMT 10
Are you adjusting the idle with the throttle stop screws then adjusting throttle bodies? If the butterflys are up on the throttle stops the no fiddling with the cable will lower rpm.
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andyh
2015 Tourist
Posts: 953
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idling
Jan 28, 2022 13:11:08 GMT 10
Mark likes this
Post by andyh on Jan 28, 2022 13:11:08 GMT 10
First thing worth checking is the splitter in the throttle cable under the tank, if one of the cables is hooked up on the collar then it will cause the issues you have. Have you had the tank off? Really easy to catch a cable or misalign the splitter. Roll the throttle on and watch the butterfly control arms, they should pull on at the same time.
Also what Oldmate said - back the throttle stop screws completely out so there is a gap between the screw - butterflies are closed and see if it starts. If it doesn't just increase them half a turn on each side till it does. Then adjust the screws to get as close to 1050 as possible. Then try to balance at >1800 using throttle cable adjustment.
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idling
Jan 28, 2022 15:12:30 GMT 10
Post by Mark on Jan 28, 2022 15:12:30 GMT 10
Thanks guys, yes I'll get back to it again tomorrow and go through it all again. thought about the splitter but got lazy. The butterflies do close, open at the same time. I'll keep in touch, Thanks
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Post by Uralee on Jan 28, 2022 19:06:28 GMT 10
If the butterflies are indeed closing FULLY……then you have an air leak.
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bewildered
Tool for reverse shift lever removal
Posts: 276
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Post by bewildered on Jan 29, 2022 1:16:49 GMT 10
What I know about fuel injection could be written in large type on the head of a pin but must agree with Lee, no air no go and all the over fuelling in the world will not cause high idle. I checked out ultrasonic cleaners on Fleabay recently, heaps cheaper than the once were.
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idling
Jan 29, 2022 8:07:35 GMT 10
Post by Uralee on Jan 29, 2022 8:07:35 GMT 10
What I know about fuel injection could be written in large type on the head of a pin but must agree with Lee, no air no go and all the over fuelling in the world will not cause high idle. I checked out ultrasonic cleaners on Fleabay recently, heaps cheaper than the once were. Ha ha ha, all I know about fuel injection is what I used to teach ! 😇. But I am old and have forgotten more than many ever knew. 🤣🤣🤣🤣
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idling
Jan 29, 2022 20:55:04 GMT 10
Post by Mark on Jan 29, 2022 20:55:04 GMT 10
yep thanks all on the feedback, appreciated. At least checking the splitter I had a chance to flush the tank. Idle is a lot better, Left TB is down on adjustment. When I bring right TB up to balance it goes over 1050. So yes very possible on air leak. Another check tomo.
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bewildered
Tool for reverse shift lever removal
Posts: 276
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idling
Jan 30, 2022 3:15:21 GMT 10
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Post by bewildered on Jan 30, 2022 3:15:21 GMT 10
Perhaps get the engine idling and spray CRC or whatever onto the intake boots, that should momentarily block any suction leaks and stabilise idle. If I had to I would temporarily repair a cracked / distorted intake boot by plugging the leak with softened yellow laundry soap, Sunlight or whatever brand it is these days. When allowed to dry from a "paste" state this material remains resilient and is quiet impervious to gasoline and lube oil. Good for patching leaking fuel tanks and engine sumps.
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andyh
2015 Tourist
Posts: 953
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idling
Jan 30, 2022 6:08:58 GMT 10
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Post by andyh on Jan 30, 2022 6:08:58 GMT 10
yep thanks all on the feedback, appreciated. At least checking the splitter I had a chance to flush the tank. Idle is a lot better, Left TB is down on adjustment. When I bring right TB up to balance it goes over 1050. So yes very possible on air leak. Another check tomo. Check your clamps, especially the compliance flange side and fasteners. The way the EFI balances is a bit odd because they talk to each other. Start at a low idle and bring them up each side slowly with tiny adjustments. You might have to go over 1050 Rpm then bring one side down to get the balance. It is a juggling act that is difficult even with the Dealers Software - heard a story about a guy that spent an hour in Uralla trying to get it perfect with the Dealers software. An hour wasted as it was no better at the end than when he did it by ear The vacuum figure isn't the same for every bike so don't focus on the number. If you get it fluctuating over 1KPA between both throttle bodies accept that and move onto the above 1800 balance. The ride 50-100kms and adjust again. According to Mat at Uralla the TB's need time to "learn" after a re-map or rebalance which is possible, but no one seems to know what the ROM on the board captures and holds. Given Electrajet haven't posted anything on their company site since 2018 my guess is they went belly up during the pandemic and any IP is now lost. Luckily there is a Gen II conversion.
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