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i only got fire on two of my 4 cylinders

  • Thread starter Thread starter eddie1984
  • Start date Start date
E

eddie1984

Guest
hello i have an 81gs650gl i paid $100 for it. it was a mess. i got it runnin but its only runnin on two cyl. 2and3 are firen 1and4 are not. the coil is good i checked it . there is the orangeand white wire that comes from the kill switch i have power there. then on coil 2-3 i have a black wire the black wire dose not have power till it hooked to the coil the it gets power from the orange wire throw the coil... as where when u put a 12volt light tester on it the white wire (witch goes to coil 1-4) and turn the key it flashes.... i dont know much about this. or what it means i hope someone understands. i have resurched this and some one told me to chech my grounds and i replaced all them and it still does it... i have power goin to the ingitor and its grounded good... i dont know if this means much to any one but might help ... when i got the bike it stock rectifer was replaced i know that because they striped the screws tryin to get the old one off and just put the new one off to the side .... since i did get the old one off and put it where it belongs... i hope some one can help me ... thank you for your time eddie_ney3@hotmail.com
 
I would try looking at your ignition pickups. 1 and 4 are on the same pickup. I'm not sure if an 81 is points or electronic, if its points, you may need to clean the contacts and do a general tuneup, been there, done that. electrical gremlins arent fun.
 
bobthebiker88 said:
I would try looking at your ignition pickups. 1 and 4 are on the same pickup. I'm not sure if an 81 is points or electronic, if its points, you may need to clean the contacts and do a general tuneup, been there, done that. electrical gremlins arent fun.
Click to expand...
im not sure my self when i took the side cover off everything was clean ... like i said when hooked to a 12volt light tester it will flash... on and off as it goes around??? i dont know as where the other one dose not till hooked to the coil.
 
just curious, but are you using old plugs or fresh new ones? I've seen old plugs that are fouled simply wont fire anymore, creating this kind of issue. mind you this was in an RD350, but the idea is the same.
 
eddie1984 said:
hello i have an 81gs650gl i paid $100 for it. it was a mess. i got it runnin but its only runnin on two cyl. 2and3 are firen 1and4 are not. the coil is good i checked it . there is the orangeand white wire that comes from the kill switch i have power there. then on coil 2-3 i have a black wire the black wire dose not have power till it hooked to the coil the it gets power from the orange wire throw the coil...
Click to expand...
Of course it was a mess, why do you think you only paid $100 for it! Anyways, it sorta runs and that's a plus. The orange/white goes to both coils and supplies 12 v positive. Also,one coil gets a yellow/black wire, the other coil gets a black/white wire- these wires come from your ignitor box mounted in same area as your regulator box. The ignitor grounds out these wires at proper time to make spark. Try switching coil positions to see if problem moves to 2 and 3. Check all connections from signal generator pickups to ignitor, and to coils. Wiring on these bikes is always suspect.
 
My mistake!!!:eek: Wires from ignitor to coils- one should be yellow/black,other is white (not black/white).
While I'm being humbled; take some pics and give us some history- mileage, last registered, etc. Another guy on here (mopbucket) also just scooped a 82 gs650l- visit his posts to trade info!
 
tom203 said:
My mistake!!!:eek: Wires from ignitor to coils- one should be yellow/black,other is white (not black/white).
While I'm being humbled; take some pics and give us some history- mileage, last registered, etc. Another guy on here (mopbucket) also just scooped a 82 gs650l- visit his posts to trade info!
Click to expand...
hey tom thanks for the reply... well im almost done it... i dont really get it i got good power i tested it ... even at 6000 rpms it good all works well but my question turn now to someone else was sayin something about vac.to tank..... and oil level. well that was goin to be my question tonight... on the bottom of my motor i have my drain plug well there is also a hole there and oil keeps comin out of that hole.... and the 2nd fuel hose (between1-2) what is that for primen when the chock is on???? and do i need it???? i changed out the tank and in thinkin now how to do that part... well ill ttyl and ty for all the great info.. check out my profile now . pics to come...
 
eddie1984 said:
hey tom thanks for the reply... well im almost done it... i dont really get it i got good power i tested it ... even at 6000 rpms it good all works well but my question turn now to someone else was sayin something about vac.to tank..... and oil level. well that was goin to be my question tonight... on the bottom of my motor i have my drain plug well there is also a hole there and oil keeps comin out of that hole.... and the 2nd fuel hose (between1-2) what is that for primen when the chock is on???? and do i need it???? i changed out the tank and in thinkin now how to do that part... well ill ttyl and ty for all the great info.. check out my profile now . pics to come...
Click to expand...
Ok, so it's now running on all four? lucky you! Yes, now's a good time to explore tank/ petcock issues. What does inside of tank look like- clean , a little rusted, or a horror show? The petcock has 3 positions- Prime. On , and Res. In pri, fuel will flow from tank to carbs at all times; in On or Res, fuel is supposed to only flow when engine is running. That 2nd hose off petcock is a vacuum line which connects to carb #2 ( on engine side). When engine runs,vacuum is applied to petcock valve which lets fuel flow-IF it's working right; search these forums and you'll see this is a common problem area.
Where is this hole that oil is coming out of? near drain plug?
 
hey tom my take was **** so i changed it later to find out about the vacume line. the hole... yea its right next to the dain plug... it pumps it out when ever i start the bike.... this sucker is a chalange... my next one is a 1100 goldwing i think.. i also have 750 and a 650 honda all in early 80s lot of projects
 
eddie1984 said:
hey tom my take was **** so i changed it later to find out about the vacume line. the hole... yea its right next to the dain plug... it pumps it out when ever i start the bike.... this sucker is a chalange... my next one is a 1100 goldwing i think.. i also have 750 and a 650 honda all in early 80s lot of projects
Click to expand...
Are you starting a collection of 80's bikes???So you replaced gas tank and figured out vacuum hose.
I just looked at my bike and I don't see any holes or bolt heads near oil drain plug. If it doesn't gush out till you start bike, it means it's seeing oil pump pressure. This is a 50 psi system, not 10 psi like alot of suzukis. Maybe someone else knows where the oil relief valve lurks on this model, but oil gushing out makes no sense to me. Clean area- do you see any cracks?
 
no no cracks just a hole the size of a nickle.... lol idont know hope to ride tonight...
 
got to love the 80s bikes they r so fun to do ill try to get pic up on here tonight of my bike... its lookin good :) i made it a drop seat...
 
i have a 2005 ironhorse for when i want to take off it has a 113. it called the black widow and for good reason...
 
eddie1984 said:
i have a 2005 ironhorse for when i want to take off it has a 113. it called the black widow and for good reason...
Click to expand...
Yes and we called the 1970 Mach 3 kawasaki 500's the widow makers. 80's bikes- I won't ask about your music collections.
Are you talking about the plug in the oil filter cover and not the crankcase oil drain plug?
 
this bike is a head ache ill tell u what but fun... i got some more pics to put on but i got to go do some work today for a change lol but i ohms on coil one (1-4) was 8.4 not good and the second coil (2-3) 4.6 witch was good and its only back to firen on 2 and 3 ... and on (1-4) on the caps side it was 12.8 and i couldnt get a readin on (2-3) i dont get it....
 
eddie1984 said:
this bike is a head ache ill tell u what but fun... i got some more pics to put on but i got to go do some work today for a change lol but i ohms on coil one (1-4) was 8.4 not good and the second coil (2-3) 4.6 witch was good and its only back to firen on 2 and 3 ... and on (1-4) on the caps side it was 12.8 and i couldnt get a readin on (2-3) i dont get it....
Click to expand...
Why worry about the electrics till you figure out why oil is pumping out?Where is this "nickle size hole" again? very bottom or bottom front? Was this bike a drive by shooting victim?
 
lol i dont know much about it befor me it sat for 15 years .... then i got it ... i got that fixed.... the vacume comin off the top back side of the motor was blocked so i opened it up now its good no more leak..... :) you know what one i mean the one that goes from top of motor above the carbs to the air box. well i did a way with the air box..and a friend was helpin so he took the air box off when i was not there to got at the carbs... but all better .... well that one is all better
 
eddie1984 said:
lol i dont know much about it befor me it sat for 15 years .... then i got it ... i got that fixed.... the vacume comin off the top back side of the motor was blocked so i opened it up now its good no more leak..... :) you know what one i mean the one that goes from top of motor above the carbs to the air box. well i did a way with the air box..and a friend was helpin so he took the air box off when i was not there to got at the carbs... but all better .... well that one is all better
Click to expand...
Yeah, I know what hose you're talking about, but I'm still not getting the nickel size hole with oil gushing yet! Take a pic of this hole will ya?
 
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