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Four new spark plugs; Cold weather; Trouble Starting???

  • Thread starter Thread starter jyck
  • Start date Start date
J

jyck

Guest
I just got my 79 GS1000e Frankenbike up and running really well. A month ago, I blew a spark plug. No big deal. A week ago, another one. Since, I figure I never changed them from the PO, it was just a matter of time.

So I went ahead and replaced all 4. Everythings running good again. Then it drops down to 70 degrees. All of a sudden I'm finding myself stuck at my office parking lot trying to start my bike for a half hour.

Valves were synced not too long ago, upgraded to Dyna S ignition, VM29s synced. The only thing I can think of is either the spark plug change or the drop in temp.

Any thoughts?
 
Did you instead mean you checked and adjusted the valve clearances? You can't synch valves only adjust them? Are you using the choke to start the bike when it's cold like that? Valves should be adjusted and using the choke to half or full (whichever works for your bike) will help start it. Don't touch the throttle at first and run it like that for a few minutes (I finish putting on my gloves and then drive about 1/8 to 1/4 mile down the road before turning mine off) until it warms up
 
did you put the stock heat range plug in it?
How do you blow a plug?
If you are running so lean you are melting plugs beware of engine damage.
 
chef1366 said:
did you put the stock heat range plug in it?
How do you blow a plug?
If you are running so lean you are melting plugs beware of engine damage.
Click to expand...

I did put the stock heat range plug in it. That might have something to do with it. I don't have any experience with VM29s. Do they require special plugs?

By "Blowing a plug" I realized that one of the cylinders wasn't firing (by touching the exhaust pipes). After replacing it, it worked great again.
 
What did the spark plug you removed look like?

Black and fouled?
 
Hi,

jyck said:
By "Blowing a plug" I realized that one of the cylinders wasn't firing (by touching the exhaust pipes). After replacing it, it worked great again.
Click to expand...

Was it the #3 plug?



Thank you for your indulgence,

BassCliff
 
The plugs were sooty, but the heads were tan.

The first plug that went bad was #2 (Second one in from left if sitting on bike). The next was #1.
 
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