one cylinder

Woe unto you that bought the first model year of a major remake, perhaps this section can help address any 2014 and later model Ural "imperfections". Here's a special section for folks with the latest rigs to discuss 2014 and later model-related topics such fuel injection, 3-wheel disc brakes, hydraulic steering dampers, spin-on oil filters and other anomalies that don't belong on true Russsian motorcycle ;-P We've gone from using big hammers and greasy wrenches to needing computers and Ouija boards in order to fix our rigs.
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Please keep this section specific to issues pertaining to 2014 and later models such as fuel injection, sidecar and rear disc brakes and so forth. Ask general or non-2014 and later specific questions in the main Hammerin' & Wrenchin' section.
idaho270
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one cylinder

Post by idaho270 » Mon Dec 23, 2019 4:32 pm

Riding home the other day was nasty rainy and windy 50-60 knot winds. while swerving to miss a tree in middle of road, engine loses power and I could barely make it home. go to start it later that night and I barely started and sound like firing on one cylinder.
next day I remove valve covers and the left has a little more oil than usual and also has a brownish milky substance.
cleaned it out and checked valve clearances on both sides ok check. right side valve cover hardly had any oil in it
Took off air breather hose coming off throttle body and has milky white substance.
cleaned it out and was able to start but still sounded off. rode about a block and has no power at all.
any clues??
david

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Re: one cylinder

Post by Robert Whitten » Mon Dec 23, 2019 4:50 pm

Milky oil usually means there's water in it. A wet spark plug end will make a cylinder not fire. Sounds like you got water entering somewhere. I've had the water on plug end before. It was cleared on the road with WD 40 which is water displacement 40th try by the company.
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Re: one cylinder

Post by idaho270 » Mon Dec 23, 2019 5:19 pm

Thanks I did try spraying some wd40 in spark plug hole in cylinder to see if that would maybe dry it up.. it appears to also enter the throttle body intake hoses going up to the air filter. I plan on taking the throttle body off and giving it a cleaning

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Re: one cylinder

Post by idaho270 » Mon Dec 23, 2019 5:24 pm

Does the ecu on the throttle body control the fuel injector or is it independent??

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Re: one cylinder

Post by Lofty » Mon Dec 23, 2019 6:12 pm

I've used the linked product to restore proper function of electric components that got wet and suffered intermittant operation.
https://www.amazon.com/CRC-Industries-I ... JT2D9AC9F0

Also, if you've not already requested a pair of snorkels for the ECUs' barometric sensors, it's something you might consider doing as an additional hedge. I received mine gratis via a warranty claim.
viewtopic.php?f=10&t=55774&p=712005&hil ... ls#p712005

Agree that water in oil manifests as a milky appearance.
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Re: one cylinder

Post by idaho270 » Mon Dec 23, 2019 6:48 pm

I don't think my warranty is active. I have a 2015 gear up.

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Re: one cylinder

Post by rivers » Mon Dec 23, 2019 7:22 pm

Yikes 50-60 knt rain is severe. My guess would be you've got rain water into your electricals(ign) and shorting/not firing one jug. Take your plug wires off at the plugs and disconnect the elec plug connectors at the throttle bodies. Spritz everything with elec cleaner like CRC etc(WD40 in a pinch) and get it all nice and dry. Test ride. If still limp, pull a plug reconnect plug wire and lay the plug on the jugs fins and check for quality of spark. Fat/blue is good. Skinny orange/yellow=weak/punky. I live in rain country (coastal PNW) so a "firm believer" in using dielectric grease to prevent water ingress and corrosion.If high wind w/rain is common in your area invest in some dielectric grease for your electricals. It doesn't take much water to send these computer controlled electrons astray. :(
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Re: one cylinder

Post by Lofty » Mon Dec 23, 2019 7:44 pm

idaho270 wrote:
Mon Dec 23, 2019 6:48 pm
I don't think my warranty is active. I have a 2015 gear up.
The snorkels are also sold a la carte. ~$10.00/pr.
Contact a Ural dealer if interested.
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Re: one cylinder

Post by Mr Wazzock » Mon Dec 23, 2019 10:09 pm

idaho270 wrote:
Mon Dec 23, 2019 5:24 pm
Does the ecu on the throttle body control the fuel injector or is it independent??
Yes it does. There's nothing else to work it.
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Re: one cylinder

Post by Mr Wazzock » Mon Dec 23, 2019 10:16 pm

idaho270 wrote:
Mon Dec 23, 2019 5:19 pm
it appears to also enter the throttle body intake hoses going up to the air filter. I plan on taking the throttle body off and giving it a cleaning
It's got into your air filter then. However there is supposed to be a small drain hole at the back to let anything like that drain out. However the filter element may now be wet, and which is paper.

May or may not help but I recently had to replace both my plug wires and caps because of increasing reluctance to work when wet. Not just rain, but also condensation / dew. Would have to spray wih WD40 else may not start or start on just one cyl. I replaced them both with copper core HT wire and NGK plug caps which have rubber seals to grip the plug porcelain and the wire. The stock wires appear to have lasted only a couple of years. Well maybe 2 and a half. 2016 CT.
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Re: one cylinder

Post by RC20 » Wed Dec 25, 2019 7:17 pm

Sounds like you basically got drowned out, lucky any of it kept working, I am not sure nasty covers 50-60 knot winds and rain.

Farging god awful and just shy of a Hurricane. I have ridden in some bad stuff but nothign close to that.

Kind of all hands on deck with pull the seat, covers, access all the wiring and unplug and WD40 everything and get it dried out.

Do you have a garage? Do it inside and would add a heater aimed at the bike to help dry out the nooks and crannies.

I would suggest oil drain on engine and FD and a look at the trany dip stick. If emulsified then a diesel flush in the engine, trany and or FD is any in those. Diesel flush can take a couple of form but first try is invert the plugs (pull the wires) and then spin for a bit with a full fill of diesel in affected areas.

Drain, no need to dry out as diesel does have some lubricity and it will cook out any small amounts left over time (do not forget the 0il filter - change it with the diesel and then change it after!)
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Re: one cylinder

Post by idaho270 » Sun Dec 29, 2019 1:40 pm

Worked on it yesterday. cleaned throttle body. intake hoses started up and would die if i did nt get on throttle drained battery so kept on thrikle charge overnight
this morning started but seems left jug not heating up compared to left side

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Re: one cylinder

Post by idaho270 » Sun Dec 29, 2019 1:44 pm

edit right side heats left side not

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Re: one cylinder

Post by idaho270 » Sun Dec 29, 2019 1:55 pm

i have 12vdc at plugs with key in
i have fuel while cleaning out throttle body kept off and started had puff of gas out nozzle
started today but i will let it sit on charger for a little
maybe take out for ride

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Re: one cylinder

Post by rivers » Sun Dec 29, 2019 2:24 pm

Just getting voltage at the plugs isn't enough to insure they're firing properly. You need to determine the strength of the spark. A weak or poorly timed spark won't insure ignition of the fuel and the cyl will be cold. Cold cyl is a good sign for a plug not firing correctly. If there's any cracks, gaps, leaks etc in/at the plug wires the spark travels the path of least resistance. Even more so if the leaks are wet. Cold cyl, I'd investigate that sides ignition system. Start at the plug and work upstream.
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