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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#1  Unread postPosted: March 31st, 2018, 7:56 am

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Location: Victoria, BC,
Local time: April 23rd, 2018, 10:40 pm
Country:  Canada (ca)
My Bike Models: 1985 GL1200 LTD (2)
2008 GL1800 (sold)

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Hope I got the subject correct. Out yesterday for a trip to a local coffee shop for coffee and coconut cream pie. Felt a miss when on the highway, then when I hit town, the bike started to miss and lose power and eventually quit. No error codes on the ECU. Let it sit for a bit. Had a few people come by to assist with a push into the parking lot if needed - very nice to see. After about 20 minutes, started, idled well and I continued to the coffee shop. Had the coconut cream pie - moral imperative.

Went to come home, bike started right up. About a Km down the road, started to miss, then quit. Pulled into a parking lot, started then quit. Did this a few times. Called the local towing and while waiting I started the bike and let it idle for some 40 minutes, all was well. Didn't tempt the fates so bike was trailered to the house. Started and drove into the garage.

The bike idled well, but since it was not under load, expect that whatever was wrong did not get hot enough to fail.

Checked fuel pressure and was in spec. Thinking it's the coils. Will start and let warm up today then take around the block. Hopefully it will duplicate what happened yesterday. Coils are 34 years old.

Last year when I was having the electrical issue that resulted in my changed back to the OEM coils and wires, I noticed that the engine temp would be hotter than normal, and would get to operating temp and to the temp where the rad fan would come on quicker. I noticed this in the last week. Seems these engines are sensitive to a weak or lack of spark to a plug.

Will replace the plug wires first, have the wire. New boots, wires and coils cannot hurt.

Since there were no error codes, do not expect the sensors to be out of spec.

Ns sensor was replaced last year and should be good. TPS was as well.

Checked the Gr/Gl sensors as well last year, in spec.

Will recheck the sensors, but still leaning towards the coils.

More to follow.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#2  Unread postPosted: March 31st, 2018, 8:02 am

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My Bike Models: 1983 Interstate with '84 1200 engine, Solex single carb, and C5 ignition.
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I have read this happening with faulty ignition pickups. Also if the gas cap isn’t venting.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#3  Unread postPosted: March 31st, 2018, 8:15 am

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Location: Victoria, BC,
Local time: April 23rd, 2018, 10:40 pm
Country:  Canada (ca)
My Bike Models: 1985 GL1200 LTD (2)
2008 GL1800 (sold)

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Will check the gas cap. These '85 LTD were known to get vapour locked, Honda fixed it on the '86 SEi. There was a mod but have not found it - the vapour lock was because of heat.

Going to check the sensors, but without an error code, ECU is getting what it needs. Always a challenge and adventure.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#4  Unread postPosted: March 31st, 2018, 8:18 am

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Hmmmm there are so many things that can cause this ...hunting it down can drive you dang near crazy ....the hooch bike first name was the exercise bike ...it would leave running and come home being towed or pushed lol

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#5  Unread postPosted: March 31st, 2018, 8:57 am

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I have an older Chev truck with a "Rotten Chester" 4brl that has the in carb filter, at idle it would run until the tank went dry, but under load it would starve for fuel and feel like it had a miss and then die, turns out that little filter was mostly clogged.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#6  Unread postPosted: March 31st, 2018, 9:36 am

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Keep an eye on system voltage as low voltage will cause running issues with efi. I also agree with potential pickup coil faults as Dan said. Good Luck. :yes:

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#7  Unread postPosted: March 31st, 2018, 12:37 pm

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Bad gas, or water in the gas?

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#8  Unread postPosted: March 31st, 2018, 1:45 pm

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All good things to check. Did you run it in the dark to see if there were any stray parks?

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#9  Unread postPosted: March 31st, 2018, 5:24 pm

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Joined: December 25th, 2015, 2:38 pm
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Location: Victoria, BC,
Local time: April 23rd, 2018, 10:40 pm
Country:  Canada (ca)
My Bike Models: 1985 GL1200 LTD (2)
2008 GL1800 (sold)

Profile Personal album

Tomorrow is going to be the work/investigation day. So far fuel is at the top of the list as commented on here and on another forum.

Fuel cap venting quite important on an FI so will verify. Check the inlet filter to the fuel pump to determine the state of the lines/tank - did clean the tank last year, but have not replaced the fuel lines with these only being probably 33 years old.

Will still be looking at new plug boots, wires and coils if not because of this because after 33 years could do with a refresh. Did talk to a supplier in Langley just across the water near Vancouver and the Accel coils with wires are $249.00 CDN, best price I have found. Pug boots are approximately $9.00 CDN. Nothin glasts forever.

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#10  Unread postPosted: April 1st, 2018, 9:29 am

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Location: Victoria, BC,
Local time: April 23rd, 2018, 10:40 pm
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My Bike Models: 1985 GL1200 LTD (2)
2008 GL1800 (sold)

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Out having breakfast on the bike. Don't know if I have the issue in hand. Soaked the gas cap in WD40 degreaser overnight (biodegradable stuff).

Work done this morning:

Compressed air through the gas cap, confirmed lots of spring tension left as well.
Cleaned the fuel pump inlet filter/screen. Not enough to keep the engine from operating, but did get some fibres out of the screen, indicates fuel lines are breaking down - time to change. Will wait until second bike is here.
New fuel filter - blew through the old one, no issues - better safe then sorry, good for another two years.

Just need a good ride to confirm the system is working properly, if not onto the next possibility.

Cheers

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"When Writing the Story of Your Life, Don’t Let Anyone Else Hold the Pen"

Ernest


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#11  Unread postPosted: April 1st, 2018, 3:09 pm

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Location: Victoria, BC,
Local time: April 23rd, 2018, 10:40 pm
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2008 GL1800 (sold)

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Last update. Did a 20 Km run first thing after doing the above maintenance. No issues with the engine misfire or dying so to speak. Remembered I have this nice ultrasonic cleaning machine, so I returned to the garage and used the ultrasonic on the gas cap, cleaned it up nicely. Put another 20 Kms on the bike at highway speeds and no issues.

Thanks to all for steering me towards a fuel issue. Could have gone down the rabbit hole as well. Still intend to upgrade the coils, wires and plug boots, but that can now wait for another day. First will be the fuel lines.

Cheers

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"When Writing the Story of Your Life, Don’t Let Anyone Else Hold the Pen"

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#12  Unread postPosted: April 2nd, 2018, 4:32 am

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Glad things worked out good. :music: Still waiting for spring here... :head bang:

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#13  Unread postPosted: April 2nd, 2018, 5:07 am

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Location: Victoria, BC,
Local time: April 23rd, 2018, 10:40 pm
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2008 GL1800 (sold)

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Hear you on that. Talked with my brother up north in Larder lake, Timmins area. He mentioned they got dumped on some 10 inches or so.

Out this morning for a ride and coffee with some friends. Outside registering 0 deg C. Heated liner and bike will travel.

Cheers

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"When Writing the Story of Your Life, Don’t Let Anyone Else Hold the Pen"

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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#14  Unread postPosted: April 2nd, 2018, 8:14 pm

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Location: Victoria, BC,
Local time: April 23rd, 2018, 10:40 pm
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2008 GL1800 (sold)

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Was out on the bike this morning at 0530 and 0 deg C - heated liner on and working well. Bike is operating very well. The little stumble I used to get when accelerating on an on ramp or when I was accelerating in the lower gears is gone now. Very aware of how it has been running.

Got to thinking about my engine issues last June/July where I spent quite a few hours trying to fix the misfire/stumble issue up to 3000 RPM. My final solution back then was to reinstall the original coils and wires in place of the new coils and wires that I had installed. My thread on this issue is: viewtopic.php?f=24&t=12233 I mention above that I had a little stumble when accelerating, and this has been there since I went back to the original coils/wires.

Now that I have had this issue present itself, I'm now curious as to whether the real issue was a venting issue back then as well. I have taken the coils I bought and have done a coil check and the coils are extremely close to spec as per the OEM service manual. When I get the second bike out here I'm thinking I will install the new coils, wires and new plug boots as well to test my theory.

Time for a new thread on this issue.

Cheers

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"When Writing the Story of Your Life, Don’t Let Anyone Else Hold the Pen"

Ernest


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Share Post: Share on FacebookShare on TwitterShare on TumblrShare on Google+Share on MySpace  Post Number:#15  Unread postPosted: April 3rd, 2018, 6:01 am

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Glad it's running now!

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Vote NO on taxes, levies, and incumbents.
Every day I learn I know less than I thought I did.
Every time something is made idiot proof. The world produces a better idiot!
Maturity like wisdom seldom arrives without age. Far too often though age arrives without either.
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Politicians are like diapers. They need changed often. For the same reason.
A fine is tax you pay for doing wrong. A tax is fine you pay for doing well.
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