My triumph bonneville engine is srt120 du2005 what year is this HELP

Coat the cable with engine oil not wd 40

http://motorbike-search-engine.co.uk/classic_bikes/triumph-classic-motorcycles.php This link should help. I had a 550 way back when. There was also a Bonneville model that was 660. Both are side by side twin cylinders. The bike was not hard to work on but it rattled and required chain adjustments and frequent maintenance on the crappy electrical (Lucas) system.

I had an 05 Bonneville and it had carbys, so has your 04 model. Fuel injected Bonneville came out a few years after this.

do you have to much oil in crankcase-better chec it mate-seems like the hi pressure is seeping past the piston u could also hav bad rings-hows the compression-test it please the bloodie bearings mite be bad-any noises try to secure a haynes manual cheers

Water is getting into your ignition coils.
Trace the spark plug lead up to the coil.
Get some ignition sealer spray and spray loads of it on the leads and coil.
When a bike is new, it is sealed. After washing with detergents it gets washed away. Spray the leads and coil once a week to keep them totally dry.
An immediate way to get round when wet is to spray wd40 on the leads and coil, it should start straight away.
But, don`t spray ignition sealer on until it is totally dry.
Hope this helps