Question about Yamaha V-Max Motorcycles

1 Answer

Hi i have a 1990 vmax have been having starting problems;replaced the starter celenoid,new battery,new regulator checked connections ectHave checked the spark plugs and the gaps seem fine.When trying to start the starter tUrns slowely then picks up.Cannot go anywhere incase it doesnt start agian if i stop.

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  • lostin_music Nov 08, 2010

    Hi,I replaced the starter still not starting turns over a bit quicker otherwise the same.ian

  • lostin_music Nov 11, 2010

    Took one of the spark plugs out to check the spark only got one spark and that was it no continues spark

  • lostin_music Nov 24, 2010

    Hi,Had a friend who knows a bit more about bikes than myself to check things out.Tested the plugs,plug leads,battery,charge rate,carbs cleaned,battery connections,coil connections all fine;When trying to start by starter motor only one initial spark at plugs and then no more(a copper wire was used to replace the spark plug leads).when cranking by starter motor the pistons do not appear to cycle properly they appear to stop and start yet the starter continues to spin and sounds like it is engaged.When cranking the engine the noise from the exhaust is not consistent with a even cycle of the cylinders.When push starting the noise from the exhaust is consistent with a proper cycle of the cylinders;Now the bike wont start by push start and the spark plugs are even more intermittent.Fuel not a problem,clutch ok

  • lostin_music Nov 29, 2010

    Hi sorry about this its turning into a bit of a war of attrition

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  • 1,978 Answers

You probably need new starter brushes. Does the starter work better when you tap on it with a plastic hammer? You may be also have an issue with your starter armature being partially shorted. You should have continuity between every other contact , but no continuity between adjacent contacts. If the armature is bad you will have to replace the starter as an assembly. A cheaper brand of battery can also give you less cranking power than a Yuasa brand. Usually you do not have this issue till the battery is a couple of years old.

Posted on Oct 24, 2010

  • 2 more comments 
  • David Belcher
    David Belcher Nov 09, 2010

    If your problem is hard starting and not refusal of the starter to turn the cycle over, then you may have to look more closely at the battery. A cheaper aftermarket battery may not have the juice to operate both the starter and the cdi ignition system. You may have to look into a set of spark plug caps . They should test 5000 OHMS anything higher or lower , replace them . They can be a cause of hard starting and poor idling. Also try Chevron Techron fuel system cleaner in the tank to clean the internal passageways of the carburetors. This could also be contributing to a hard start issue.

  • David Belcher
    David Belcher Nov 11, 2010

    If your spark plug caps are bad they will keep the spark plugs from sparking . The Spark plug caps are held into the end of the wire and unscrew off the end of the wire . Take a voltage meter and take readings off of the spark plug caps. They should read 5000 OHMs. If they read higher or lower, replace them. NGK makes some inexpensive replacement caps for about $5 each.

  • David Belcher
    David Belcher Nov 28, 2010

    If the starter motor is turning but the motor is not, the problem is with the one-way clutch that is internal to the motor. There is a piece that bolts onto the flywheel called a one way clutch. it allows the starter gear to slip when the motor is running . When the starter motor is turning it grabs the starter gear and turns the motor over until the motor is running(spinning faster than the starter motor).Many times the smooth grabbing surface of the starter gear has become chattered or rough and slips instead of grabbing when the starter button is pushed. If this is is the problem you are describing then you will need to inspect the starter gear and the one -way clutch so you can get your starter turn the motor properly.
    If all your wire connections have been plugged,unplugged ,cleaned,checked,etc., you will probably have to consider checking the CDI box and pulsar pick ups. If the coils and pulsar pick ups test good than the brain box (CDI) is probably bad . CDI boxes can test good and still be bad , you have to eliminate all the other possibilities first before you replace the expensive box. Exchanging a box with a friend for the sake of testing is the least expensive way of checking this part.

  • David Belcher
    David Belcher Nov 29, 2010

    I only hope I am part of the solution.

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