BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down    Coil packs, checking function of on Mon Oct 31, 2016 1:20 pm

P1tBull

P1tBull
active member
active member
Hey folks
Im wonder if anyone can tell me how to check my coil pack with a multimeter.

I started my bike the other day and straight from start it was running lumpy
below 3000rpm and when accelerating it it misfiring and running horrible.
Above 3000 it runs smooth and fine.
Im going to pull my plugs now and check them but want to know the procedure for checking the packs too.

If its not them then i will start checking rubber etc for air leaks.

    

2Back to top Go down    Re: Coil packs, checking function of on Mon Oct 31, 2016 2:35 pm

Holister

Holister
Life time member
Life time member
You'll find that info in the 'Trouble Shooting' link in the middle of the Portal page. Testing coils is quite a way down the page. There's a lot of very useful info there thanks to our venerable Crazy Frog.

Here are a few other suggestions.
Could be sparkplugs. At least they will give you an indication as to whats happening ie clean or sooty.
You might find one or two of the vacuum take-offs on the throttle bodies is cracked or missing.
There could be corrosion in the HT lead plugs either end or in the coil sockets. Make sure you have terminal nuts fitted to the spark plug tops.

Cheers


__________________________________________________
1988 K100RT VIN No. 0094680
1989 K100RT VIN No. 0097367 (naked)
1996 K1100RS VIN No. 0451808
Fuel: 95 Octane
Engine Oil:Nulon Full Synthetic 15W50
Gear Box Oil: Nulon Synthetic 75W90
    

3Back to top Go down    Re: Coil packs, checking function of on Mon Oct 31, 2016 2:59 pm

P1tBull

P1tBull
active member
active member
Well removing the spark plugs showed me the problems.

One had snapped of the bent part of the electrode and all 4 were only in a few turns on the thread.
They, and all the ht leads were covered in black soot from exhaust.
4 new plugs in and cleaned the ht leads.
Seems to run better now.

Will take it for a spin in a few days once i have replaced a cracked fuel line and put the new S fairing on.

Thanks

    

4Back to top Go down    Re: Coil packs, checking function of on Mon Oct 31, 2016 6:00 pm

mike d

avatar
Life time member
Life time member
Given what you have found, I'm surprised it smoothed out over 3000rpm.

Mike

    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum