Engine turns over slowly

Dennis the Menace

Dennis the Menace

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Problem with a 1200 ( not mine) not been run for 6 months, engine turns over slowly with the plugs out, new battery, starter motor is ok checked on another bike, oil is strange bit on the thick side, brown, slight smell of burnt oil, but doesn't look like its been used much in the engine, could the rings be stuck in the piston causing a interference fit in the bores
With rocker covers off, timing chine goes round, valves go in and out
Cant turn the engine over using the back wheel in 6th gear, there is too much drag on the engine
Symptoms to me think its a engine problem, but could it be clutch drag ?, wheel spins in neutral,
gear box seems to select ok
Lets say helpful suggestions :D appreciated
 
Depends how it was stored damp garage not good could be as above stiff or sized alternator,if oil don't look right change it oil costs less than a new engine :eek:

Don't keep trying to crank engine until it's freed off or you could burn starter out too :augie
 
If its been in a damp garage for some moths, take a close look at the front cover paint around the mounting screws. It's a hard and tough paint but it seems to fail at the screw landing faces allowing corrosion to creep under and generally gouge the metal surface. Only reliable solution is a dip tank strip and refinish. I went for powder coat but etch prime and paint will be fine.
 
Has anyone found a common or garden car alternator that will fit the 1200 engine. It could save a fortune compared to OEM or even Electrex.
 
Bendy toy said:
If its been in a damp garage for some moths, take a close look at the front cover paint around the mounting screws. It's a hard and tough paint but it seems to fail at the screw landing faces allowing corrosion to creep under and generally gouge the metal surface. Only reliable solution is a dip tank strip and refinish. I went for powder coat but etch prime and paint will be fine.
Click to expand...

Every where you cant normally see the paint is falling off the engine, just general neglect by the owner, but that's his problem
As you know you have to take the tank off (ADV bike) to get to the alternator and what a weight that tank is, about two gallons of petrol in it, bike is so much lighter and easier to wheel about with out it
Alternator will rotate anti clockwise but not clockwise (the way it should) maybe its just a brush issue
Alternator about £200.00 from MotoWorks don't know whether that's new or used but again that's his problem
 
Dennis Crompton said:
Every where you cant normally see the paint is falling off the engine, just general neglect by the owner, but that's his problem
As you know you have to take the tank off (ADV bike) to get to the alternator and what a weight that tank is, about two gallons of petrol in it, bike is so much lighter and easier to wheel about with out it
Alternator will rotate anti clockwise but not clockwise (the way it should) maybe its just a brush issue
Alternator about £200.00 from MotoWorks don't know whether that's new or used but again that's his problem
Click to expand...

Google alternator repairs in your area, my local guy fitted bearings & other items for £50 all in
 
That's fine for regulators and bearings but you'll not get a reconditioned unit if the rotor or stator cores have expanded due to corroded laminations.
Obviously, that is entirely the owners fault for not removing the petrol tank every week and cleaning every part of the bike with dental floss.
 
Just looked at the alternator on the bench, it looks like there is a clutch built into it that's why it rotates anti clockwise, any way its scrap
 
Check the casing carefully.

If there are no signs of cracking anywhere, it is probable that the rotor has rusted onto the stator. If there are cracks anywhere on the casing, then there is corrosion inside the alternator which has moved the stator sideways, so it is scrap.
Assuming there are no cracks in the casing, put a socket onto the drive pulley nut and force it round. after a turn or so it will free up as you break the rust binding the two together. get it spinning and blow out rust with an airline. If it frees up, take plastic off the back and spray WD40 into the gap between rotor and stator to prevent recurrance.
This is a common problem with some alternators.
Myke
 
Bendy toy said:
That's fine for regulators and bearings but you'll not get a reconditioned unit if the rotor or stator cores have expanded due to corroded laminations.
Obviously, that is entirely the owners fault for not removing the petrol tank every week and cleaning every part of the bike with dental floss.
Click to expand...

:D :P :rolleyes:
 
Bendy toy said:
Obviously, that is entirely the owners fault for not removing the petrol tank every week and cleaning every part of the bike with dental floss.
Click to expand...

Yes said in jest :D but you can say that about all modern bikes, it depends whether a bike is a hobby or every day work horse, I have had BMW since 1974, my current bike is with out doubt the best BMW I have every had, if and when it needs cleaning I clean it, if a bike is poorly looked after expect it to give problems
People complain about the cost of modern bikes and equipment then don't look after them
 
Nippy Normans supply Touratech, Wunderlich, Desert Fox and many other makes of accessories.
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