Author Topic: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79. progress!  (Read 13725 times)

0 Members and 1 Guest are viewing this topic.

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #200 on: December 23, 2018, 12:51:51 pm »
The cleaned and lined tank's in, The lash is triple checked, the timing is triple checked, new fuel filter and fuel line, I noticed the OK looking filters seem to be difficult to blow through. I'm hoping things will work better now, even though I haven't really found the smoking gun.
If the things you own end up owning you, it's better to be owned by some cool things.

Offline RAF122S

  • I feel like a
  • Really Old Timer ...
  • *******
  • Posts: 6,563
  • SOHC 4 member # 2605
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #201 on: December 23, 2018, 02:06:59 pm »
Filters don't sound "good" for them to be difficult to blow through. Is that with them attached to the downstream plumbing or into the tank?
Glad you've gotten it close to starting up again.
David stuck in the curvy back roads of "Upper East" TN

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #202 on: December 23, 2018, 05:46:01 pm »
 The filters were off the bike when I blew through the lines. I replaced them with one new one, with new rubber fuel line, checked the pump pressure, it strokes over 20 psi Dead ended. It then held 10 for a few minutes. I hooked the fuel hose to my IV bottle as high as I can get it and cranked the motor. I could see the fuel level increase with every pulse. I've concluded the new pump is installed properly. I triple checked the timing, coils and plug wire routing. Anything wrong just about has to be in the carbs.
 I've been in it so many times the intake valves are pristine, I spray seafoam on the stems every time I take the carbs off. The first time I scraped them and vacuumed the ports clean. No buildup now.
If the things you own end up owning you, it's better to be owned by some cool things.

Offline grcamna2

  • Not a
  • Really Old Timer ...
  • *******
  • Posts: 7,326
  • I love to restore & travel. Keep'em Going Strong !
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #203 on: December 24, 2018, 01:37:00 pm »
Hi Don,
Have you tried lightly blowing(human pressure rather than air compressor) into the rubber hose for the fuel inlet to your rack of carbs ? I wonder if the float needles somehow got sealed closed?
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S',1982' Suz. GS450TXZ
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #204 on: December 25, 2018, 09:37:33 pm »
Hi Don,
Have you tried lightly blowing(human pressure rather than air compressor) into the rubber hose for the fuel inlet to your rack of carbs ? I wonder if the float needles somehow got sealed closed?

 Yes I have thanks. I had that on a cb400f once, there was some sort of orange fuel residue gluing things closed. The bike belonged to a boat mechanic when I got it.
 I've been in the carbs 3 times and had a pro clean and rebuild them once. I don't think that was really 20 psi from the pump, probably inches of water column. I'll have to read the gauge again. At any rate I'm hoping the sealed clean tank, fuel lines and filter will somehow alleviate the poor performance.  There were enough small rust particles in the old gas that came out to tinge it red. I'll filter it again and run it through the junky old lawn mower.
I learned you can blow into a big block V8 engine and find a bad gasket, soapy water can help on small ones. I wouldn't have believed it but someone told me to try it and it worked. I've since passed that along to my drag racing buddies with vacuum pump problems.
If the things you own end up owning you, it's better to be owned by some cool things.

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #205 on: December 29, 2018, 03:21:21 pm »
 I got it together, the start relay is balky I need to tap it with a finger on most tries. I gave it the usual amount of choke and think I wetted a plug or two, rode it around the neighborhood at dusk. It didn't clean out and was dripping from somewhere when I got back.
 Beer time, and situation normal in Don's wing world. I believe it loves being retired as much as I do and refuses to return to work. I've got about $1400 in my $100 dollar Goldwing now. There's a nice looking one just like it for a grand online. Runs and appears to have better paint.
If the things you own end up owning you, it's better to be owned by some cool things.

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #206 on: January 02, 2019, 01:04:16 pm »
 Anyway, it starts and runs #1 floods over and makes a mess in the plenum but if I fill the float bowls, dry the plugs and start it up with the fuel off it runs pretty good. A five count of open petcock every couple minutes and I can ride it around the neighborhood. I believe I'm on to something now. It's a shame I can't seem to unstick the float, it might be fixed aside from that.
  I should keep a maintenance record in each bike, I know I've done new float valves but was it this bike or the 79?
If the things you own end up owning you, it's better to be owned by some cool things.

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
Re: 78 GL1000 after sitting 20 yrs. refuses to be as good as my old 79.
« Reply #207 on: January 04, 2019, 04:16:22 pm »
 Now we're getting to the meat of it, I took the carbs off and went to my local mom and pop bike shop.  The fuel passages were full of rust. I must have screwed up with fuel filters or something. Anyway, we re-cleaned the carbs, jets and plenum passages, put in 4 new float valves, bench checked the floats and valves. Charlie checked everything with a spark plug magnifier. So far so good. I brought the set home and put them on the IV bottle for a longer time and gas showed up in the plenum seam. I ordered a few sets of Radaaks carb, plenum and petcock seals, I have installed a new Honda fuel filter and flushed the lines. I took the fuel pump apart and checked for rust inside, it looks clean and new as it should. Once I get the plenum sealed up I have high hopes of a good running bike that I'll leave at home this summer when we ride750's to Mid Ohio!
If the things you own end up owning you, it's better to be owned by some cool things.

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
 I'm going to consult the manual and split the plenum so it'll be ready to go when the seals get here. Part 2 is I'm going to clean the Webers for my 750 too.
 Edit, I split the plenum, it needed it one fuel passage was gnarly, gasket ick on both sides. I realized I could probably have used 3 o rings and glue the air seal back in but the good stuff is already on route.
« Last Edit: January 06, 2019, 06:01:11 pm by Don R »
If the things you own end up owning you, it's better to be owned by some cool things.

Online Don R

  • My Sandcast is a
  • Really Old Timer ...
  • *******
  • Posts: 10,752
  • Saver of unloved motorcycles.
 I got the Randaak's seals today. I removed the carbs from the plenum and replaced the carb to plenum seals and the plenum split seal I used my new lighted magnifying glass to check the passages and blew them out some more. I'm convinced I'm on to something. With any luck and no babysitting I'll get the carbs back on tomorrow. I just need to get the linkage reconnected on the one side and it's ready to go back on. woodehoo!

 Edit, I filled the carb rack with fuel from the IV bottle and let it sit for an hour. No leaking, Now I'm ready to put them on in time for the big snow emergency. IE: no test ride.
« Last Edit: January 11, 2019, 04:11:04 pm by Don R »
If the things you own end up owning you, it's better to be owned by some cool things.

 

;
Honda