Stihl MS200t Ignition Coil (blue)

[Scratch2000uk]

Has anyone got one of these spare lieing around doing nothing.?

It's the blue case one i'm after.

My saw starts conking out after about 20mins.

 

Thanks

Peter

[spudulike]

Not so sure it will be a coil problem, have you looked at the fuel tank breather? THe saw may be low on compression and as it heats up, the coimpression lowers and then stops it.

 

I have heard that coils can go down with use but have only ever had dead ones. Have you checked the coil to flywheel distance - does it die at idle or at full tilt, does it rev to the top end before dying? Have you pulled the plug and checked the spark as soon as it dies?

[robbo 110]

its rare but, ive had coils & h.t. leads begin to break down as they get hot, ive also had some coils that work intermittantly.

 

a lot of people seem to believe a coil works or doesnt work, no middle ground... electrics, electronics or mechanical it can all fail, hope you find the cause of your problems fella

[Scratch2000uk]

Hi again.

It's a bit of a funny bugger it dies on idle sometimes then on the odd occasion goes on full throttle without presssing the trigger all the way. usually on warming up then seems to settle.

The other day when i was giving it a run it was running a bit lumpy, (not been used for a while ) when i tipped it onto its side while ticking over it went into full throttle mode.?

Works for about 20 minutes runs a bit lumpy at first then works ok, then it will not start at all. untill cooled down fully.

Not checked the spark plug when it die yet

Edited April 6, 2011 by Scratch2000uk

[spudulike]

Hi again.

It's a bit of a funny bugger it dies on idle sometimes then on the odd occasion goes on full throttle without presssing the trigger all the way. usually on warming up then seems to settle.

The other day when i was giving it a run it was running a bit lumpy, (not been used for a while ) when i tipped it onto its side while ticking over it went into full throttle mode.?

Works for about 20 minutes runs a bit lumpy at first then works ok, then it will not start at all. untill cooled down fully.

Not checked the spark plug when it die yet

 

A saw with a correctly set carb that revs to around 1/2 - 3/4 revs at idle generally has an air leak and a bad one, it is strange that it comes and goes. An air leaks symptoms are very similar to the saw running out of fuel. The saw starts ideling very fast!

 

A dodgy coil will either fail or will break down at high revs either stopping the saw or making it cut out and splutter at high revs.

 

The symptoms you have don't sound like coil faults to me. Check the rubber boot for splits and then the carb for dirt. It is worth checking the fuel filter is sited at the bottom of the fuel tank - it may be pulling in a bit of air?

 

If you get stuck - sent it over - Parcels2go - £6.50 and I will pressure check it etc - if it has a bad air leak, there is a possibility it will seize so go carefully.