please bear with me; one more post head gasket/timing belt question

[kotkinjs1]

Hi all,
Completed my first head gasket change and think it solved my problems (combustion gasses in the coolant, bubbling from the radiator neck especially after throttle, occasional heavy white smoke out the one exhaust especially after throttle). While I was in there did the timing belts and valve adjustments. Only changed the one head gasket but did the valves on both sides obviously. Added some high mileage Seafoam to the oil also. My first timing belt change but I think I did it correctly. BUT.....

after all the work I ran it every day or so and it would start ok (it's got a single carb and I know I need to tune it more but once it's warmed up it holds throttle ok; before that I need to keep the throttle on or it'll stall). Haven't rode it yet cause I need to rebuild the rear brake caliper and wait on some tires. But ran it through a couple of heat cycles every time and seemed ok. In the past day or so it started starting hard, like real hard. Like a disgusting sound I'm not sure if it's electrical or mechanical or what. It doesn't exactly sound like pistons hitting valves but I've never heard that before. It also seems to run okay once warmed up. It's got a new starter for what it's worth. Any ideas or words of wisdom?

First video is initial cold startup with that horrible soul crushing sound; 2nd video is warming up and trying to hold idle (not well); 3rd video is warmed up and running seemingly ok.



   Never miss a video: Subscribe to the GoldwingDocs YouTube channel today!




   Never miss a video: Subscribe to the GoldwingDocs YouTube channel today!




   Never miss a video: Subscribe to the GoldwingDocs YouTube channel today!

[DenverWinger]

Seems to run fairly decent.

That awful noise while cranking on a cold start is the starter sprag clutch not engaging well. Probably oil gunk in the sprags, as that part of the engine isn't oiled well. It's not the valves.

Since it still starts, add a half can of Seafoam to the oil, when you are able to drive the bike go a couple hundred easy miles (Seafoam dilutes oil viscosity) and change oil again. See this video.
viewtopic.php?f=16&t=66036

Miles of smiles.

[AZgl1800]

Your short startup and warm up periods are doing more harm, than good.
the engine would be better off, if you let it run at mid RPMs for several hours, mimicking a long ride.

The short runups: the front of the engine case is not getting warm enough to dissolve the crud in there.

as the previous post mentions, let it sit until you can ride it for at least 100 miles non-stop.
the oil has to get up to running temperature before the Sea Foam can do its' work.

drain the oil, refill with a new 1/2 can of Sea Foam and repeat the 100+ mile ride. More is better in this case.
Drain and refill with fresh oil and new filter.

Since it only has one carb, you have eliminated one bad bug-a-boo at low RPMs, out of sync carbs will sound like the engine is coming apart.

[kotkinjs1]

Thanks guys! This forum is awesome!

[LAB3]

My sprag clutch does the same thing, hitting the starter button with the engine running helps to sling some oil up to it (from what I've read) and it helps for awhile.

[tomos]

Hi,regarding first video,problem is starting cluch,stretched starting chain and possibly worn chain gear that couples with starter.All above mentioned happened to my bike 82 aspencade. I would say that chain is a major problem in your case.That chopping noise is chain slapping feed with starting clutch that cannot engage .As guys mentioned try with a see foam and if does not work you have got to replace worn parts.
You can check my post on how to repair starting clutch when all other solutions have failed.
Note:if starter clutch is grooved to deep (more than 0.2mm)in area where roller moves it is not possible to make it work. ROLLER will get stuck due to excessive play.
Second video,you have got to adjust idling as there is not enough fuel.
Hope this helps.
Regards Tomos

[Johnyy Smoke]

You only changed one head gasket. Both need to be done. Did you retorque after warm up? all valve adjustments need to be done after gasket change, sounds to me either valves need to set, or redo heads. Vacuum is off. Regards, Johnny