Timing off?

[Guest]

Just tried starting my bike after getting new dyna coils and spark plugs.during cranking it sounded like it was about to start and nothing. Tried again and backfired super loud. Obviously it's getting some fuel and spark but not too sure where to begin looking first. Could my timing be off or should I check something else before digging into that?

[Big T]

Plugs wires are on the correct plugs?
That's what it sounds like

[Gsnewb]

Iv got the left coil plug wires going plugs 1,4 and right one to plugs 2,3. I had read somewhere on here that's how they're supposed to be

[tom203]

That's correct. But maybe the wires coming from ignitor got switched around at ignition coils.

[Gsnewb]

how do i tell if they're correct or not

[hannibal]

What kind of bike do you have? You can check the wiring diagram in the manual for wire colors.

[Gsnewb]

sorry its a '81 gs750l with pods on it now.

[hannibal]

Find a manual and/or wiring diagram for your model here: http://members.dslextreme.com/users/bikecliff/. Then check which wire should be going to which coil.

[Gsnewb]

Ok so good news and bad news. Good news is I got it running and runs amazing......after finding a loose ground wire and timing off a tooth. Bad news is I now need to replace the head gasket because it decided to bust open above the exhaust on a ride

[Big T]

The head gasket is below the exhaust.
The valve cover gasket is above the exhaust, much easier (but messy) fix

[Gsnewb]

true but with the bike the exhaust still wraps under the engine and was getting oil from it. not the valve cover at the very top. obviously ill still need to replace that again when tearing apart the engine again if i cant salvage it.