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Coil Issues..

  • Thread starter Thread starter Anonymous
  • Start date Start date
Hi All

On a semi related link.....when I rebuilt my carbs I did take the floats off, I did however not recheck the float height because I never messed with them, just put them back in place after cleaning carbs. All o-rings were removed and replaced with Robert Barr o-rings. Should I have checked the float height even if I did not mess with them?????

Scott
 
scottjm said:
Hi All

On a semi related link.....when I rebuilt my carbs I did take the floats off, I did however not recheck the float height because I never messed with them, just put them back in place after cleaning carbs. All o-rings were removed and replaced with Robert Barr o-rings. Should I have checked the float height even if I did not mess with them?????

Scott
Click to expand...
My first guess will be if you go that far you should always check the floats. You could have disrurbed them and some spacing when you did the o rings.
 
Thanks Scotty
I think that I will ride it in its current state and carry some extra plugs for the next couple of months, you see, summers are short here and one must take advantage of the weather while its here. This winter will see a removal of the carbs and a correct adjustment of the floats.

Scott
 
scottjm said:
Thanks Scotty
I think that I will ride it in its current state and carry some extra plugs for the next couple of months, you see, summers are short here and one must take advantage of the weather while its here. This winter will see a removal of the carbs and a correct adjustment of the floats.

Scott
Click to expand...
Keep the rpms up. Wind it up a little more that normal when going through the gears.


:lol: Do 6000 rpm launches from each stoplight. :lol: 8O 8O 8O
 
scott said:
Would a higher octane gas help? I am currently running 85
Click to expand...

Higher octane fuel will lean it out. It's less dense so it does lean carburation out some. As for getting rid of carbon some guys are pulling the filters of the carbs and giving the cylinders a misting of water to blast out the carbon. Sea-Foam in your gas is supposed to work too. And float level on CVs is important. Sounds like the pilots are too far out as well.
 
Thanks you guys. Scotty, after the third stoplight I saw red lights flashing four blocks behind me, those 6000 rpm takeoffs draw attention....

Billy, I have the pilots seated all the way, this is how I found them and that is how I returned them, is this right???

I do notice that gas from one station in my truck makes a diiference, it runs better on Chevron then any other gas, I believe the past few tanksfuls have been Phillips 66 that I have put in my bike. My brother worked for Amoco a while back and insists that Chevron has the best consistency in gasoline octane, unfortunately there is not one for 50 miles near me.

On another note, we all should avoid filling up while the big truck is delivering gas to the station, this stirs up all kinds of crap in the bottom of the tanks which inevitably goes onto our tanks.

Scott
 
OK, I have been gone a week on a business trip, when I left the bike ran great, I had turned the airscrewas out a little and was finally getting some color on cylinders 2 and 3 spark plugs. Upon returning from my trip I started up the bike and she ran on two cylinders, 3 and 4. I removed the spark plugs and 1 was alittle wet wtih gas, 2 was black and little wet, 3 and 4 were black and sooty. What causes this to happen? it sat a week without running and now this plug fouling thing again...ARGHH :evil:

Scott

1980 GS 750E
 
my older 550 used to do that if it sat for over a week. i fouled two sets of plugs when i had the bike taken apart for a while. surprisingly i just picked the bike up from sitting for over a month, and it started up! it ran pig rich, so i figured i'd have to change plugs...boy was i happy.

try this, i dont know if your 80 uses the same plugs as my 79 550...but originally its supposed to use NGK B8ES plugs. the shop didn't have them one time, and sold be B8RES plugs, and said they'd work the same. i noticed they were colored a bit different then the B8ES. these plugs were what i had sitting in the bike for over a month without fouling.

maybe give the R type NGK plugs a try! worth a shot, right?

~Adam
 
Adam

Thanks for the reply, I will try them and see if it helps, but I got a feelin that the problem is deeper then that.... :cry: I am probably going to have to take the carbs off again and check the float level. I was also going to purchase Dyna ignition and coils in the near future. My spark is alittle anemic.

One thing of note: When I pull the plug on cylinder #1 (the biggest problem cylinder), the spark is non existent or very sporadic until I rev it to around 2000 RPM or more, then I have a little yellow spark. After replacing plugs it fires on all of them when I start it, then they eventually foul out after a while. I checked the coils and they check out, in fact cylinders 3 and 4 fire all the time and actually have a little tan color to the plugs.

hmmm

Scott
 
not enough spark will cause plugs to foul...that is a given. what you can try is changing the plug wires by swapping 1 and 4 then 2 and 3, and see if the problem continues on the swapped cylinders. if it doesn't change anything, then you know you have a problem with the carbs on those cylinders.

~Adam
 
Thanks Adam

will do, as soon as I get my kids to their appropriate sitters, I am on it. I'll let you know the results..but first I have to buy new plugs.

Scott
 
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