timing a shovelhead

Discussion in 'Classic Models' started by winkles117, Oct 15, 2008.

  1. winkles117

    winkles117 New Member

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    have a 78 shovel that turns over but will not start, thinking the timing is off. have power to the coil and to the pulgs. how do you set it to were it will start or am i looking in the wrong direction.
     
  2. R. Lewis

    R. Lewis Senior Member Retired Moderators

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    Battery in good shape??? getting the right amps/ohms every where??
     
  3. hntwrobin

    hntwrobin Active Member

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    Was it runing before? The timing plug is on the primary side of the case.
     
  4. Fossil

    Fossil Active Member

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    One of the problems with older bikes is how much of it is no longer stock. Does you bike have a points ignition or electronic? Do you have a shop manual? If not get one and read it closely. You say it turns over and has spark at the plugs. Do you have gas in the tank? Does the accelarator pump work? Are the points if you have them pitted? Read the manual and write back. You will get help here. Fossil
     
  5. winkles117

    winkles117 New Member

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    not sure my other one will post so trying it again. the bike started after sitting for a year and started puking oil out the engine vent. removed oil pump cleaned and replaced keys reinstalled and primed. check the screen on the engine and cleaned and reinstalled. installed a new battery and it pulled it down will sitting for a week. ruined the battery so replaced it. has been changed to elerontic so no points. have a old cylmer book, but not much help. turns over and choking it by hand so i know its getting fuel. pulled plugs and they are wet with gas. firing thru the plugs. also firing from coil to plugs. engine went dead before i removed the oil pump and wouldn't restart. now it still won't start. not sure if the timing is off for it not to start or if the short has anything to do with it. any ideals??
     
  6. SledDog

    SledDog Senior Member Staff Member Moderator

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    Did you have the cam cover off? Did you do any work near the cam cover at all? Check the wiring coming from the ignition plate. Some electronic ignitions have static timing lights. Do you know who the manufacture is the ignition is? The 78's were all points (some one correct me if I'm wrong). So the ignition is aftermarket. find the manufactures name and model name go to their website. They probably have a manual online.

    You say your getting spark at the plugs, correct? If your plugs are wet, it sounds like it flooded. Also, since it sat for a year, did you drain the gas and replace it with fresh?

    If you didn't do any work inside the cam cover, you should not have to time the bike. If it will not run, you will not to try and static time it. If it was points, I could help ya. But with electronics, I can't.
     
  7. dave_shovel

    dave_shovel Member

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    You have spark and fuel, but do you have compression? Re-adjust PRs and static time your bike. What electronic ignition are you running? Make sure all wires are clean and tight. Have fresh gas.

    dave
     
  8. jel123

    jel123 Active Member

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    when you have a BOTTOM BREATHER MOTOR AND THEY SIT THEY WILL SUMP THE OIL OUT OF THE CASES YOU REALLEY DIDN,T NEED TO PULL THE PUMP DOWN KNOW TEAR DOWN THE CARB AND CLEAN ALL THE JETS MAKE SURE YOU CAN SEE THROUGH THEM THE PRIMARY JET IS MOST LIKLEY BLOCKED,JEL
     
  9. nytemuvr

    nytemuvr Member

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    If your puking oil out the vent, it could be the check ball in the oil pump is stuck open(a common problem with shovels that have set a long time). The starting problems could be anyone of the things that have been mentioned on this thread.
     
  10. sanec1

    sanec1 Active Member

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    It could be an ignition coil that is weak. It will still give spark but the bike wont start.