ignition timing/points gap

Chealsie · Borekit Bruiser Joined: 14 Jul 2008 Karma :

Hiya
Following on from a last thread about my bike (GP100) thats being a real pain to start now, i was advised to check the timing and points gap.

I studied the manual and attempted it today, as i need the bike to get to my training and test the next few days.
So today, i took the flywheel off and cleaned the points, no difference. So i gapped the point to an approx. (no proper measuring tool) .3/.4 mm points gap. Then i lined the timing marks on the flywheel against the mark on the crankcase and the points were sparking good and on time.

Still no difference when i put everything back together again.

Took aaages to start again. Crying or Very sad

Slight powerloss recently but compression of 150psi Confused

Today i also cleaned my exhaust and exhaust port.

What else can i do or try please, or is it possible the timing is still wrong. Thank you guys
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Chealsie Dagger! Wink

chillpill · World Chat Champion Joined: 12 Aug 2008 Karma :

new plug

and get yourself a feeler gauge to gap it properley there only a few quid Wink

Chealsie · Borekit Bruiser Joined: 14 Jul 2008 Karma :

rotax81 · Nearly there... Joined: 10 Sep 2008 Karma :

if the points were sparking well good then my guess is a knackered condenser (the little can next to the points).
its common to change that and the points together Thumbs Up

____________________
ZX636C6F road. ZX636C1H track. ZX7R redundant. ZX0.5R minimoto as ornament.
Audi A4 Avant 1.9TDi and VW Transporter 2.5TDi 888 Special (no mot and tax lol)

Chealsie · Borekit Bruiser Joined: 14 Jul 2008 Karma :

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

A dead condenser can kill a plug and a set of points in very short order.

Eyeballing the timing is not good enough. At a very minimum use the old "fag paper" trick. Slide a fag paper between the points. You ought to just be able to pull it out without tearing it as you get to the timing mark.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

Chealsie · Borekit Bruiser Joined: 14 Jul 2008 Karma :

rotax81 · Nearly there... Joined: 10 Sep 2008 Karma :

your bike shop should have a condenser as they are a very common replacment. a lot of bikes use the same part in most cases.
if the points are new and the timing is where its suppose to be then the fag paper trick will work.
i used to use the card from a fag packet for the points gap Thumbs Up

basically the points have to open to release the spark from the coil.
the points have to be closed for an amount of time to charge the coil.
hence the importance of the gap Thumbs Up

lube the little pad on the cam that opens the points with a BIT of engine/2 stroke oil to stop the heel wearing too quick on the points.
(thats if it has one)
____________________
ZX636C6F road. ZX636C1H track. ZX7R redundant. ZX0.5R minimoto as ornament.
Audi A4 Avant 1.9TDi and VW Transporter 2.5TDi 888 Special (no mot and tax lol)

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

It's probably like most small strokers of that era in there is no seperate adjustment for the gap and the timing.

They reach a point of wear where it is impossable to get both within an acceptable limit and the points just need replacing, even if they look to hav eplenty of meat on them.

Basically, set the timing, check the gap. If the gap is too big, you need new points.

You should be able to get new points and condenser from wemoto.com . I think the last ones I bought for my GFs YB100 came in around the £15 mark.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.