My turn for engine issues, gonna be a fun winter fix

Are ya having a problem with your rig? We'll try to help. Share your tech tips and experiences here. Dr. Billy Glaser, author of the "Unofficial 750 Ural Service Manual" site myural.com, is moderating this section.
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JPanyon
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My turn for engine issues, gonna be a fun winter fix

Post by JPanyon » Sun Oct 25, 2015 8:20 pm

Easing down a country road, 30 mph, engine(?) starts making loud knocking sound. Stopped, started checking the usual suspects.
Tranny-- ok, spins freely in all gears with clutch pulled in, by spinning the rear wheel.
Engine-- spins smoothly using kick starter with plugs pulled
Compression-- above 125 psi both sides.
Oil--level ok on dipstick.

By then, engine had cooled off. I restarted it, no knocking. Limped another mile to home. Below 2800 rpm, no real noticeable knocking. As revs get near 3,000, I can feel the beginnings of a knock starting up. THEN, I also noted momentary ignition cutouts accompanying the noise. The noise appears to be from front of the motor.

Hmmmm... perhaps the camshaft bearing is shot, nose of cam is wiggling, and ignition rotor making unwanted contact with with the pickup sensor? Slinger is kaput? Ignition unit mount screws loose? Rotor loose? Front gears have problems? I'll be pulling stuff apart later in the week to check out what's what. Got my fingers crossed, at 54,000 km.
John Panyon,,,Biking since 1961 on wheels left behind but never forgotten
1948 Indian Chief, 1954 Harley Police Special, 1965 BSA Rocket Lightning, 1972 BMW R75 /5, 1975 Norton Commando, 1977 BMW R100 /7 with "Unobtanium" accessories

2002 Ural BC 1st year 750, my unofficial pickup truck for delivering groceries to the disabled.
My Hack Monkey, (rescued from an Animal Shelter).... https://youtu.be/p7pC38IvvoM

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isldtime
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Re: My turn for engine issues, gonna be a fun winter fix

Post by isldtime » Sun Oct 25, 2015 10:31 pm

Sounds like an ignition issue.
2002 Tourist
2013 Husky TR650 Strada

thumper05flstsc
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Re: My turn for engine issues, gonna be a fun winter fix

Post by thumper05flstsc » Sun Oct 25, 2015 10:35 pm

I agree with isldtime. I would get the timing light out and check it. I have a spare ignition module if you want to try swapping it out to see if that is the problem. If so send me a PM with your address and I will "loan" it to you so you can see if that might be the porblem.
"Treat me good, I'll treat you better. Treat me bad, I'll treat you worse" (SB)

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JPanyon
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Re: My turn for engine issues, gonna be a fun winter fix

Post by JPanyon » Mon Oct 26, 2015 12:15 pm

thumper05flstsc wrote:I agree with isldtime. I would get the timing light out and check it. I have a spare ignition module if you want to try swapping it out to see if that is the problem. If so send me a PM with your address and I will "loan" it to you so you can see if that might be the porblem.
Thanks for the offer, but I have a spare ignition already. I've been running a personally repaired Type V for 10 years, and my original Type IV is in the toolbox as a known good spare. If the installed system is actually giving me grief, I'll dig into it and find out why. Prior to swapping to the Type V and a "good" coil, I'd been bitten by loose mount screws on the rotor and on the mount plate, plus got bit by the two-piece rotor deterioration. The "bad" coil had inferior insulation on the windings, and its high voltage lead connectors were the guillotine style that sliced completely through the carbonized thread-core "spark cables" that were original equipment. Not good!!
John Panyon,,,Biking since 1961 on wheels left behind but never forgotten
1948 Indian Chief, 1954 Harley Police Special, 1965 BSA Rocket Lightning, 1972 BMW R75 /5, 1975 Norton Commando, 1977 BMW R100 /7 with "Unobtanium" accessories

2002 Ural BC 1st year 750, my unofficial pickup truck for delivering groceries to the disabled.
My Hack Monkey, (rescued from an Animal Shelter).... https://youtu.be/p7pC38IvvoM

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Albuquralque
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Re: My turn for engine issues, gonna be a fun winter fix

Post by Albuquralque » Mon Oct 26, 2015 12:34 pm

:lurker:
"Put a little gravel in your travel"


Previous Urals Owned: 2004 Wolf, 2006 Tourist, 2006 Patrol (TOW), 2006 Patrol (TOM), 2014 Patrol

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jndomin
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Re: My turn for engine issues, gonna be a fun winter fix

Post by jndomin » Mon Mar 21, 2016 3:37 pm

As the type 5 ignition distribution rotors seem to be unavailable, has anyone found a source for or even a compatible replacement for the URAL type 5 ignition rotor?
JD

2006 URAL Patrol
1968 HONDA CL 350

Right is right, even if everyone is against it;
and wrong is wrong, even if everyone is for it. - William Penn

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Re: My turn for engine issues, gonna be a fun winter fix

Post by gobium » Mon Mar 21, 2016 4:20 pm

Lutz in Canada is mass produce them
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Re: My turn for engine issues, gonna be a fun winter fix

Post by jndomin » Tue Mar 22, 2016 8:42 am

Thanks!!
JD

2006 URAL Patrol
1968 HONDA CL 350

Right is right, even if everyone is against it;
and wrong is wrong, even if everyone is for it. - William Penn

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