1 K100 RS 1984 ... currently a 3-cyclinder K100 :-( Thu Oct 27, 2011 6:56 pm
GuitarMan
New member
Hi Guys,
I'm back after a 2 year delay (due to selling my beloved K100RT and buying a Kawasaki GPX600R).
I swapped the GPX for a 1984 K100RS and am now happy again ... or at least would be, if it ran right.
The bike had been stood a while (ie 3 years), so I checked compression, lubricated cylinders, renewed plugs, battery, air filter, oil, coolant, and rode it home (a distance of 15 miles).
Problem is, it's short of power, and backfires.
It seems to not fire on Cylinder 2 (ie, seocnd from left looking at LHS of engine). The exhaust leading to Cylinder 2 is cold/lukewarm no hot as the other 3 are.
I have checked for spark - all OK big fa spark. I am suspecting inectors need cleaned, although I have cleaned them bu putting 12V to open them (sealed with rubber to prevent fire etc) and squirting injector cleaner ... but this is not the full ticket, I realise this.
Th spark plug to Cylinder 2 is wet with fuel, indicating that the injector is working, and I have spark at No 2 as well. Strange. All other plugs are fouled (oilycolour) even though they are brand new.
Some previous owner (or previous to him ), had implemented some very creative wiring solutions. The VDO Voltmeter was wired to the starter (now wired by me to the accesory loom), and the EFI Relay had a bodged bit of wire from Pin 86 also going to the starter. Needless to say this has been removed.
I have tested the EFI relay and it works. Also tested the EFI Connector (EFO Computer) at Pin 12, etc ... all good.
The bike is backfiring at idle, and totally lacking in power ... but I cannot adjust the TPS as the mounting screw is completely seized on the nightmare far side. I have also disconnected the TPS and tested but no improvement.
Fuel filter? Injectors? What is the correct set up/order for the HT Leads/spark plug wires? The mysterious previous owner marked them with paint in an "abstract art" kinda way ... and has totally confused me as to which lead goes to which plug, from the coils.
Any ideas I'd be most grateful where to start with this lovely old K.
Best wishes,
Steve
I'm back after a 2 year delay (due to selling my beloved K100RT and buying a Kawasaki GPX600R).
I swapped the GPX for a 1984 K100RS and am now happy again ... or at least would be, if it ran right.
The bike had been stood a while (ie 3 years), so I checked compression, lubricated cylinders, renewed plugs, battery, air filter, oil, coolant, and rode it home (a distance of 15 miles).
Problem is, it's short of power, and backfires.
It seems to not fire on Cylinder 2 (ie, seocnd from left looking at LHS of engine). The exhaust leading to Cylinder 2 is cold/lukewarm no hot as the other 3 are.
I have checked for spark - all OK big fa spark. I am suspecting inectors need cleaned, although I have cleaned them bu putting 12V to open them (sealed with rubber to prevent fire etc) and squirting injector cleaner ... but this is not the full ticket, I realise this.
Th spark plug to Cylinder 2 is wet with fuel, indicating that the injector is working, and I have spark at No 2 as well. Strange. All other plugs are fouled (oilycolour) even though they are brand new.
Some previous owner (or previous to him ), had implemented some very creative wiring solutions. The VDO Voltmeter was wired to the starter (now wired by me to the accesory loom), and the EFI Relay had a bodged bit of wire from Pin 86 also going to the starter. Needless to say this has been removed.
I have tested the EFI relay and it works. Also tested the EFI Connector (EFO Computer) at Pin 12, etc ... all good.
The bike is backfiring at idle, and totally lacking in power ... but I cannot adjust the TPS as the mounting screw is completely seized on the nightmare far side. I have also disconnected the TPS and tested but no improvement.
Fuel filter? Injectors? What is the correct set up/order for the HT Leads/spark plug wires? The mysterious previous owner marked them with paint in an "abstract art" kinda way ... and has totally confused me as to which lead goes to which plug, from the coils.
Any ideas I'd be most grateful where to start with this lovely old K.
Best wishes,
Steve