A friend has a misfiring GPZ which he suspects may be down to the coil being on its way out. Can anyone with a Haynes BOL tell me what sort of readings I should get across it when I wander over with my multimeter? Thanks -- Alex SRX 400 "I laugh in the face of danger" "Then I hide until it goes away" www.drzoidberg.co.uk
FZS600 Fazer (I'd have thought values would be similar) Primary winding = 1.87 to 2.53 Ohms @ 20°C Secondary winding (without cap) = 12K to 18K Ohms @ 20°C Plug cap resistance = 10K Ohms @ 20°C
Ta very muchly. -- Alex SRX 400 "I laugh in the face of danger" "Then I hide until it goes away" www.drzoidberg.co.uk
In my experience (which is fairly broad) coils just pack up, they don't cause intermittent faults, try the HT leads posible shorting out somewhere.
Hope this helps: alternator alternator output: 25amps @6k rpm, 14v stator coil resistance <1.0 ohm rotor coil resistance approx 4 ohms Ignition: pickup coil resistance 390-590 ohms pickup coil air gap 0.5-0.9mm (0.019-0.035in) Ignition coil secondary resistance 10,000-16,000 ohms primary resistance 1.8-2.8 ohms if he needs more expert help visit the yahoo gpz900r forum, they're very helpful.
Thats great , will give it a look if I need any more help. -- Alex SRX 400 "I laugh in the face of danger" "Then I hide until it goes away" www.drzoidberg.co.uk
Testing the resistance will only tell you if it is completely knackered. You need to get it 'load tested' to see if it is OK in use.They can give great sparks when the engine is turned over to test it, but at 5000rpm, they may be giving a very weak spark. A dealer in Leicester does this (Redcar M/cs) for about £20, so it might be cheaper to get a 2nd hand one (but again, a 2nd hand one may be no better).I'm sure there must be plenty of other places that test them as well. Alan.
Related to that... I've found that a slightly knackered coil will produce an orange-tinged blue spark when the test gap is 10mm or greater. A coil in good condition will quite happily send a healthy blue spark leaping across a 13mm gap. Look for the orange tinge. If it's there, it's not a good sign. -- Dave GS 850 x2 / SE 6a SbS#6? DIAABTCOD#16 APOSTLE#16? FUB#3 FUB KotL OSOS#12? UKRMMA#19
That is so wrong. -- Dave GS 850 x2 / SE 6a SbS#6? DIAABTCOD#16 APOSTLE#16? FUB#3 FUB KotL OSOS#12? UKRMMA#19
I have a coil that has an intermittent fault, known as "doesn't work when it's wet". Something to do with three big lengthways splits in it. Fortunately this coil has found a new position as a paperweight, a role more suited to its talents. -- Platypus VN800 Drifter, R80RT DIAABTCOD#2 GPOTHUF#19 BOTAFOS#6 BOTAFOT#89 BOB#1 SBS#35 ANORAK#18 TWA#15 "WOULD YOU KINDLY SHUT THE **** UP!"
Ta very muchly. -- Alex "I laugh in the face of danger" "Then I hide until it goes away" www.drzoidberg.co.uk
Well if it reads ok one minute then gives widely fluctuating readings the next after you have shaken it a bit then it is indeed fucked. The other one was perfectly solid so it's definately the coil that was causing the two cylinders to misfire. Thanks for the replies everyone. -- Alex SRX 400 "I laugh in the face of danger" "Then I hide until it goes away" www.drzoidberg.co.uk
We did after we had identified the suspect coil and it confirmed it. -- Alex SRX 400 "I laugh in the face of danger" "Then I hide until it goes away" www.drzoidberg.co.uk
