Need help with my track bike - Page 2 - SV650.org

NTECUK · 18-07-15, 09:41 PM

If it turns when not engaged with engine it not pulling much current.
So any resistance in the circuit has less of an effect.
That's were the meter good. It shows you were the volts drop.
So if needs to be checked in the engine.
The biggest volt drop is across the starter (11 Volts probly as your loose some across the solenoid and all the connections ).
So check out the volts drop. Volts on your meter. Probly range will be 20volts. Put the -ve or common on the meter probe on the -ve battery terminal.Then the pos probe to the frame. Then keep the -ve battery terminal connected. Them +ve probe to the engine.
Any more than 0.65 volts is bad.
If that's OK with the meter -ve still on the -ve on battery -ve terminal and the positive probe on the input of the starter. The meter reading should be 10 volts min when you crank it.

Degener8 · 19-07-15, 06:13 AM

No problem il do.that as soon as im home, what would be the solution if its reading more than 0.65?

NTECUK · 19-07-15, 07:16 AM

Clean up the contacts or if it's a broken wire replace it unless you can get a replacement terminal.
If it a drop across the starter relay /solenoid, it's a new one.
I guess you have put the bike in gear and it will turn over.

Degener8 · 19-07-15, 09:50 AM

Okay, with the alternator cover off and the gear spur removed between the starter motor and the one way clutch cog, the starter motor spins, with the multimeter on the connection it reads 11v.. When the spur is connected the 3 move about 1 - mill then stop, when I release the button it moves backwards the same? I really really really appreciate you being so patient with me im trying to get this sorted between 12 hour weekend shifts at work lol.

Degener8 · 19-07-15, 08:01 PM

Thanks to everyone that helped, but the engine is siezed good and proper so it's up to the mechanic now.
Cheers for your help with everything!

John

jambo · 21-07-15, 02:57 PM

Yes the missing question here was does it turn by hand.

Before all hope is lost, have you removed the plugs and tried turning it over? You occasionally find a leaky carb has flooded a cylinder and hydraulic locked the engine (petrol does not compress). I've had this happen in the past, it's annoying but worth checking before you condemn the motor. Don't have your head anywhere near the spark plug hole when you turn the motor over after removing the plugs by the way, it may come out quite fast...

If this is the case, drop the oil out as it may have been contaminated with fuel, and also check the carb floats & needles, as well as any fuel taps.

Fingers crossed

Jambo

NTECUK · 21-07-15, 04:20 PM

Post two Mr Spiers first past the post on that one....
What I missed was the bit about it didn't turn.
Ops

Degener8 · 21-07-15, 07:32 PM

Quote:

Originally Posted by jambo

Yes the missing question here was does it turn by hand.

Before all hope is lost, have you removed the plugs and tried turning it over? You occasionally find a leaky carb has flooded a cylinder and hydraulic locked the engine (petrol does not compress). I've had this happen in the past, it's annoying but worth checking before you condemn the motor. Don't have your head anywhere near the spark plug hole when you turn the motor over after removing the plugs by the way, it may come out quite fast...

If this is the case, drop the oil out as it may have been contaminated with fuel, and also check the carb floats & needles, as well as any fuel taps.

Fingers crossed

Jambo

Quote:

Originally Posted by NTECUK

Post two Mr Spiers first past the post on that one....
What I missed was the bit about it didn't turn.
Ops

Yeah i got my buddy round to help me, it's stuck for sure . Ive since learned it's spent a year standing under a car port. Its booked in to my.mechanic now on Monday it's well past my abilities. Originally it was deemed a starter motor issue and it's just escalated lol. As soon as I know what the diagnosis is il update

doesn't matter how broken it is though il still mend it lol

Degener8 · 10-08-15, 10:48 AM

The engine is genuinely siezed.
It's dropped 2 exhaust valves on cylinder 4
But there is all bits in engine so is going to want a full strip.
The bikes coming back so I can drop the engine out myself and get it ready and keep Cost low but a second hand engine is £350 but is more hassle to collect and prep etc plus we know this engine more than sone random second hand job which could die in a week.. So

Degener8 · 11-08-15, 01:47 PM

Here's the culprits

18-07-15, 09:41 PM	#11
NTECUK Member Mega Poster Join Date: Apr 2011 Location: essex Posts: 5,314	Re: Need help with my track bike If it turns when not engaged with engine it not pulling much current. So any resistance in the circuit has less of an effect. That's were the meter good. It shows you were the volts drop. So if needs to be checked in the engine. The biggest volt drop is across the starter (11 Volts probly as your loose some across the solenoid and all the connections ). So check out the volts drop. Volts on your meter. Probly range will be 20volts. Put the -ve or common on the meter probe on the -ve battery terminal.Then the pos probe to the frame. Then keep the -ve battery terminal connected. Them +ve probe to the engine. Any more than 0.65 volts is bad. If that's OK with the meter -ve still on the -ve on battery -ve terminal and the positive probe on the input of the starter. The meter reading should be 10 volts min when you crank it. __________________ Raisin cookies that look like chocolate chip cookies are the reason I have trust issues. Last edited by NTECUK; 18-07-15 at 09:43 PM.

19-07-15, 06:13 AM	#12
Degener8 Member Join Date: Feb 2013 Location: Nottingham Posts: 47	Re: Need help with my track bike No problem il do.that as soon as im home, what would be the solution if its reading more than 0.65? __________________ " By the Power of Grayskull... "

19-07-15, 07:16 AM	#13
NTECUK Member Mega Poster Join Date: Apr 2011 Location: essex Posts: 5,314	Re: Need help with my track bike Clean up the contacts or if it's a broken wire replace it unless you can get a replacement terminal. If it a drop across the starter relay /solenoid, it's a new one. I guess you have put the bike in gear and it will turn over. __________________ Raisin cookies that look like chocolate chip cookies are the reason I have trust issues.

19-07-15, 09:50 AM	#14
Degener8 Member Join Date: Feb 2013 Location: Nottingham Posts: 47	Re: Need help with my track bike Okay, with the alternator cover off and the gear spur removed between the starter motor and the one way clutch cog, the starter motor spins, with the multimeter on the connection it reads 11v.. When the spur is connected the 3 move about 1 - mill then stop, when I release the button it moves backwards the same? I really really really appreciate you being so patient with me im trying to get this sorted between 12 hour weekend shifts at work lol. __________________ " By the Power of Grayskull... " Last edited by Degener8; 19-07-15 at 09:54 AM.

19-07-15, 08:01 PM	#15
Degener8 Member Join Date: Feb 2013 Location: Nottingham Posts: 47	Re: Need help with my track bike Thanks to everyone that helped, but the engine is siezed good and proper so it's up to the mechanic now. Cheers for your help with everything! John __________________ " By the Power of Grayskull... "

21-07-15, 02:57 PM	#16
jambo Member Mega Poster Join Date: Aug 2003 Location: Croydonia Posts: 5,376	Re: Need help with my track bike Yes the missing question here was does it turn by hand. Before all hope is lost, have you removed the plugs and tried turning it over? You occasionally find a leaky carb has flooded a cylinder and hydraulic locked the engine (petrol does not compress). I've had this happen in the past, it's annoying but worth checking before you condemn the motor. Don't have your head anywhere near the spark plug hole when you turn the motor over after removing the plugs by the way, it may come out quite fast... If this is the case, drop the oil out as it may have been contaminated with fuel, and also check the carb floats & needles, as well as any fuel taps. Fingers crossed Jambo __________________ Modern motorcycles are bloody brilliant, enjoy it while we can

21-07-15, 04:20 PM	#17
NTECUK Member Mega Poster Join Date: Apr 2011 Location: essex Posts: 5,314	Re: Need help with my track bike Post two Mr Spiers first past the post on that one.... What I missed was the bit about it didn't turn. Ops __________________ Raisin cookies that look like chocolate chip cookies are the reason I have trust issues. Last edited by NTECUK; 21-07-15 at 04:22 PM.

10-08-15, 10:48 AM	#19
Degener8 Member Join Date: Feb 2013 Location: Nottingham Posts: 47	Re: Need help with my track bike The engine is genuinely siezed. It's dropped 2 exhaust valves on cylinder 4 But there is all bits in engine so is going to want a full strip. The bikes coming back so I can drop the engine out myself and get it ready and keep Cost low but a second hand engine is £350 but is more hassle to collect and prep etc plus we know this engine more than sone random second hand job which could die in a week.. So __________________ " By the Power of Grayskull... "

11-08-15, 01:47 PM	#20
Degener8 Member Join Date: Feb 2013 Location: Nottingham Posts: 47	Re: Need help with my track bike Here's the culprits __________________ " By the Power of Grayskull... "

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