Author Topic: Any suggestions on starting a sitting engine  (Read 553 times)

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Offline arncruz

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  • 1977 cb550
Any suggestions on starting a sitting engine
« on: September 05, 2014, 07:32:26 PM »
I just picked up my new project motorcycle - a 1978 CB550K.  I bought it for relatively cheap and all the PO said it needed was a new battery, exhaust, and gas.  I took off the spark plugs and shot some engine oil into the cylinders, gas, and a used battery.  I cranked it about 20 times and the engine started.  After 1 year of sitting in a storage shed, the darn thing was alive.  Unfortunately the engine only lasted about 10 seconds.  I was wondering if anyone had any other suggestions on making this puppy hum.  The bike has only 24,000 miles.

Thanks
My Stable
1969 CB750 #6xx
1969 CB750 #20xx
1969 CB750 #27xx
1969 CB750 #43xx survivor
1969 CB750 #12xxx
1970 CB750 K0 survivor
2014 MVP Agusta 675 F3

Offline flybox1

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Re: Any suggestions on starting a sitting engine
« Reply #1 on: September 05, 2014, 07:59:29 PM »
Start with the 3000 mi maintenance items.
Since it started, and ran, this might be all you need.....
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline arncruz

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  • 1977 cb550
Re: Any suggestions on starting a sitting engine
« Reply #2 on: September 05, 2014, 08:04:22 PM »
Will do.  You're the second member to suggest this.  Thanks
My Stable
1969 CB750 #6xx
1969 CB750 #20xx
1969 CB750 #27xx
1969 CB750 #43xx survivor
1969 CB750 #12xxx
1970 CB750 K0 survivor
2014 MVP Agusta 675 F3

Offline SOHC Digger

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Re: Any suggestions on starting a sitting engine
« Reply #3 on: September 05, 2014, 08:15:13 PM »
Make sure you are using NEW gasoline, including draining the old stuff out of the carbs. I have been bitten too many times by what turned out to be stale fuel.

Offline arncruz

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  • Posts: 212
  • 1977 cb550
Re: Any suggestions on starting a sitting engine
« Reply #4 on: September 05, 2014, 08:20:00 PM »
Digger, do you have to remove the carbs to take the old gasoline out?

My Stable
1969 CB750 #6xx
1969 CB750 #20xx
1969 CB750 #27xx
1969 CB750 #43xx survivor
1969 CB750 #12xxx
1970 CB750 K0 survivor
2014 MVP Agusta 675 F3

Offline flybox1

  • My wife thinks I'm a
  • Really Old Timer ...
  • *******
  • Posts: 14,289
Re: Any suggestions on starting a sitting engine
« Reply #5 on: September 05, 2014, 09:27:40 PM »
Start with the 3000 mi maintenance items.
Since it started, and ran, this might be all you need.....
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline BryanR

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Re: Any suggestions on starting a sitting engine
« Reply #6 on: September 07, 2014, 02:32:36 PM »
Started my own '73 CB750 after sitting for 6 years (damn kids!). Fired right up, even with the 6 year old fuel in it!

Following weekend, changed the fuel, plugs, oil. She's a champ :)


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