Bright spark needed
I need some parts to fit on my 1989 Suzuki GSX-R400R SP. The bike is giving some electrical problems, mainly ignition issues. I’m thinking about changing the pick-ups, checking the coils and also testing the CDI.
A friend told me that some of these components might also be common to other Suzuki models, like the Bandit 400. We haven’t checked yet. However the SP CDI is certain to be different.
Where should I start looking to find out what is causing the problems?
Pedro Oliveira, email
Gary Hurd says: Before getting too deep into the business of electrical components, I’d start with a basic compression check to see if the running issues might be mechanical. Ignition pick-ups and CDIS either tend to work or not and rarely present intermittent problems. You’re quite right about the CDI being unique to this model, but a parts number search on somewhere like cmsnl.com will soon show what other components are common to other Suzukis. Import specialists Fastline Motorcycles (fastline.co.uk) could be helpful too.
GSX-R400R SP in happier times