its backfiring what the hay!!??!!??!!?(hey EARL!)

[bybowtie]

Finally I have combustion!!! problem is its backfiring through the carbs!!!!!
It only happens when I am at W.O. choke..!!! Any Ideas I have 6 days before the big ride I can almost taste it! help! Thanks yall

[earlfor]

Re: OK im getting close!!!!

Full choke may be flooding it. My 750 takes about 1/3 choke when cold and my 1150 takes about 1/8th.

Earl

Finally I have combustion!!! problem is its backfiring through the carbs!!!!!
It only happens when I am at W.O. choke..!!! Any I deaas I have 6 days before the big ride Ican almost taste it help! Thanks yall

[bybowtie]

just who I was hopings to respond, MR experience!!! 8) that will cause the backfire, what is the best way to start a bike thats been down about 6mos?? I am hoping I can get it tonight it would be a great weight lifted off my shoulders!

[bybowtie]

ok no choke at all and its still backfiring.. worst yet I cant for the life of me find my manual!!!!!anyone out there have and insight?>? thanks

[robinjo]

Are the backfires occuring at idle and/or with a little throttle? In that case try turning the air screws to richen it up a bit. Any comments on this from the experts???

[earlfor]

Which bike is it? Does it have an electronic ignition that is adjustable.
Does it at least have timing marks so you can clip a timing light on it to check timing. Will it run long enough that you can use a timing light?

Earl

ok no choke at all and its still backfiring.. worst yet I cant for the life of me find my manual!!!!!anyone out there have and insight?>? thanks

[bybowtie]

ok figured thisa one out.. used the 1,4 2,3 firing order I saw elsewaqre in a topice.. well that was causing the backfire.... so I swapped it to 1.3 2.4 which is what I thought it was to begin with...........now she hummmmmmmmmmsss well sort of (see other post OH NO GOT A GUSHER!!!) thanks for all your help!

[bybowtie]

btw it is an 82 1100gl

[earlfor]

1 & 4 and 2 & 3 are where the plug wires go for the left and right coils. The
left coil spark plug leads connect to cylinders 1 and 4. The right coil spark plug leads connect to cylinders 2 and 3. That is not the same thing as firing order. :-) :-) The firing order is 1, 2, 4, 3.

Earl

ok figured thisa one out.. used the 1,4 2,3 firing order I saw elsewaqre in a topice.. well that was causing the backfire.... so I swapped it to 1.3 2.4 which is what I thought it was to begin with...........now she hummmmmmmmmmsss well sort of (see other post OH NO GOT A GUSHER!!!) thanks for all your h
elp!

[bybowtie]

thats what I meant.. I put coils 1 on 1,3 and coil 2 on 2,4 and its running fairly smooth w/exception of the gusher!

[earlfor]

Well, regardless of how it appears to run, I can say absolutely, that is incorrect.
Earl

thats what I meant.. I put coils 1 on 1,3 and coil 2 on 2,4 and its running fairly smooth w/e
xception of the gusher!

[bybowtie]

where do I go now?

[earlfor]

Put it back the way it is supposed to be. There is a problem that has to be found. The correct way is left coil spark plugs wires go to cylinders 1 and 4.
Right coil spark plug wires go to cylinders 2 and 3.

Do a check for me on this:

The negative terminal on your left coil should be a white wire. Look at your left pointset and see if it also has a white wire connected to it.

The negative terminal on your right coils should be a black wire. Look at you right pointset and see if it has a black wire connected to it.

These two wires (black and white) will be plugged into a connector under the left side cover and should be plugged black to black and white to white. Verify that they are.

Tell me what you find.

Earl

where do I go now?

[bybowtie]

only one problem.... I have just installed ACCEL coils.. they are (according to the manual) no polarity sensitive...so now what. Im with ya earl I wan to get this thing buzzing and I know you know how.. thanks keith

[bybowtie]

OK I made an error... Took another look at it and the coils are reversed
so now it s 1=2,3 ;2=1,4. So now thats good... it does however seem to run a bit rich, left bank of exhaust is quite a bit hotter than the right. Also when not runnig an airfilter(iwas just trying to get it running didnt think it would ) the left 2 carbs(1,2) pop a bit and the right 2 run smotth, I cant really rev it too much.. But if I add the filter it revs like a banshee...I am however not to sure on the temperature .. thanks